EP3984875B1 - Launch and recovery platform for a boat and associated method for floating and removal from the water - Google Patents

Description

[Field of the invention]

The present invention relates to the field of transport and handling of floating devices. More particularly, the invention relates to the field of assistance in launching and recovering a ship. In particular, it relates to a boat launch and recovery platform. The invention further relates to a method for launching and removing from the water a platform for launching and recovering a boat usable with or without crew on board.

[Prior art]

The exploration of marine territories involves more and more small boats that can be launched from a larger vessel or from a fixed or floating marine construction.

In particular, unmanned surface vehicles are currently being developed for a variety of applications where manned operations can put the lives of occupants at risk. The question then arises of the autonomous recovery of these unmanned surface vehicles or even their storage afloat and off-float. Despite advances in unmanned surface vehicles in recent years, launch and subsequent recovery options for these vehicles have stagnated.

The launching of boats, whether autonomous or not, generally uses launch and recovery systems. Typically, ships or marine construction use davits or cranes to deploy boats using cables, pulleys, tackles and hooks. For example, usually used to launch lifeboats, davits can connect to cables attached to each end of the lifeboat and raise a lifeboat afloat. However, such a maneuver takes time and can be dangerous.

Rigid inflatable boats are typically deployed and recovered by a cable attached to a central pivot point of the inflatable boat and manipulated by a crane positioned on the ship or marine construction. When recovering boats and in particular when the sea is rough causing the boat to become unstable, this leads to dangerous handling when attaching the boat to the cable.

Launch or recovery ramps have also been proposed. Ramps are generally associated with ships and cannot be easily adapted to marine constructions with platforms at an altitude much higher than sea level. In addition, ramps are not suitable for long-term storage of the boat whether in the water or out of the water.

Many operators recognize that launching and recovering these unmanned surface vehicles, particularly in rough seas, proves difficult, limiting the opportunities for overall use of these systems. To counter this, efforts have been made to develop motion compensation systems for watercraft launch and recovery operations.

In particular, launch and recovery systems designed for use in difficult offshore conditions have been proposed. Such systems include locking and unlocking systems to secure the boat during launching or recovery. These locking and unlocking systems feature two pneumatic movable arms installed to provide a wider entry point when in the open position and an additional lock when closed. For example, the patent document n°US6152065 discloses a structure adapted to receive a boat and which comprises one or more floating elements supporting a cradle itself intended to support and carry the boat. A second solution described in patent document no. KR102034174 consists of an underwater vehicle launching method capable of launching an underwater vehicle without using a separate underwater vehicle separation device.

However, such systems are complex and generally require compressed air and the boat remains sensitive to strong swells during which damage to the boat can occur.

Thus, there is a need for a launch and recovery system allowing a boat to be launched and recovered safely even in rough seas but also to be stored in optimal conditions whether afloat or out of the water.

[Technical problem]

The invention aims to remedy the drawbacks of the prior art. In particular, the invention aims to provide a platform for launching and recovering a boat providing an anchor point at sea allowing the mooring of a boat, to facilitate its recovery by a motorized vehicle of larger size. scale while allowing, once on land, the boat to be stored.

The invention further aims to propose a method for launching and removing the water from a boat included in the launch and recovery platform according to the invention.

[Brief description of the invention]

• une armature destinée à accueillir un bateau, ladite armature comportant un ensemble de profilés formant une enceinte comprenant une entrée et un plancher de soutien,
• des moyens de flottaison fixés à l'armature, et
• un plancher flottant couplé à l'armature de façon à être mobile en translation verticale, de préférence en translation verticale par rapport à l'axe longitudinale d'une base inférieure de l'armature,

ladite plateforme de lancement et de récupération étant agencée pour passer d'une configuration dans laquelle le plancher flottant repose sur le plancher de soutien lorsque la plateforme de lancement et de récupération est hors flot, à une configuration dans laquelle le plancher flottant flotte à la surface de l'eau lorsque la plateforme de lancement et de récupération est à flot.To this end, the invention relates to a launch and recovery platform for a boat comprising:

• a frame intended to accommodate a boat, said frame comprising a set of profiles forming an enclosure comprising an entrance and a support floor,
• means of flotation attached to the frame, and
• a floating floor coupled to the frame so as to be movable in vertical translation, preferably in vertical translation relative to the longitudinal axis of a lower base of the frame,

said launch and recovery platform being arranged to move from a configuration in which the floating floor rests on the support floor when the launch and recovery platform is out of water, to a configuration in which the floating floor floats on the surface water when the launch and recovery platform is afloat.

The launch and recovery platform according to the invention allows the boat to be stored on land or in the ship or marine construction from which it is launched. Above the water, the frame can be covered with a cover to create a protective shelter for the boat and to accommodate maintenance operations.

There is thus a decoupling of the movements of the frame of the launch and recovery platform in relation to the floating floor. This allows the movements to be decoupled of the boat (resting on the floating floor) and the frame (including the external structure).

Thus, in the presence of a degree of freedom of vertical movement of the floating floor, there is absorption of the differences in movement between the two parts by the movement of one relative to the other. This allows for mitigation of disturbances induced by swell and stabilization of the entire platform. Such a launch and recovery platform also makes it possible to relieve the bow of the boat which is accommodated in the platform, thus allowing evacuation, by gravity from the rear, of spray and rainwater while facilitating exit. in reverse of the boat from the launch and recovery platform.

Depending on other optional features of the launch and recovery platform, the latter may optionally include one or more of the following features, alone or in combination:

• the frame may further comprise pads forming a cradle on which the vessel rests above the water, and preferably the floating floor floats on the surface of the water independently of the pads forming a cradle.
• the frame is made of metal or a metal alloy such as, for example, steel. Metal, and in particular steel, allows the platform to withstand bad weather better over time than polymer materials.
• it further comprises a security system, said security system comprising a boat reception structure arranged so as to match the shape of part of the bow of the boat and at least two guide arms arranged to hold the boat . Thus, the safety of the boat and the control of its movement in relation to the frame is reinforced, including in rough seas.
• the reception structure is arranged so as to be movable in vertical translation relative to the lower base of the frame, preferably the reception structure is also fixed to the floating floor. Thus, the guidance and stabilization of the boat within the platform are improved.
• the floating floor comprises a means of attachment to the frame selected from: a slide-type connection, a ring equipped with pads sliding on a tube, a rail, or even a ring capable of sliding on a vertical structure of the frame .
• the floating floor comprises at least one connecting ring arranged to surround at least one guide bar fixed to the frame.
• the support floor forms a cradle comprising a plurality of runners intended to support the boat when said launch and recovery platform is in the out-of-water position. Thus the floating floor can be retracted below the level of the skids, is not crushed by the boat and its lifespan is increased.
• the floating floor comprises a plurality of openings arranged to allow the positioning of the plurality of skids under the boat when said launch and recovery platform is in the out-of-water position. This makes it possible to maintain a large floating floor surface while allowing the existence of skates.
• the floating floor is arranged so as to support at least partly the boat when said launch and recovery platform is in the out-of-water position. This makes it possible to maintain the cylinder locking of the boat on the floating floor at the level of the bow.
• it comprises a lower base, distinct from the support floor, said support floor having a plane forming, with respect to the lower base, an angle greater than or equal to 10°, preferably greater than or equal to 15°, more preferably greater than or equal to 20°, even more preferably greater than or equal to 25°. For example, the angle is between 10° and 40°, preferably between 20° and 35°, even more preferably between 25° and 30°. This makes it possible to raise the rear part of the boat (e.g. the engines) in order to reduce the risk of tipping over.
• the support floor forms a cradle comprising a plurality of skids, in that said support floor forms the lower base of the launch and recovery platform and in that the plurality of skids has lengths selected so that the The longitudinal axis of the boat supported by said cradle forms an angle with respect to the support floor greater than or equal to 10°. For example, the angle is between 10° and 40°, preferably between 20° and 35°, even more preferably between 25° and 30°. This makes it possible to raise the rear part of the boat (e.g. the engines) to reduce the risk of tipping.
• it comprises at least one, preferably at least four lifting rings intended to cooperate with a lifting means.
• it comprises a floating cradle positioned at the entrance to the enclosure formed by the profiles of the frame, preferably fixed to at least a third profile of the set of profiles. Such a floating cradle makes it possible to support at least part of the weight of the boat's engines.
• it includes guide means and a plurality of fenders. This preserves the bow and planking of the boat and facilitates its insertion into the frame. The fenders are sized and placed to gradually guide the boat more precisely into the frame as it is inserted using its motorization.

The invention also relates to a use of a launch and recovery platform according to the invention as an autonomous receptacle of a boat.

• Une étape d'accrochage de la plateforme de lancement et de récupération selon l'invention supportant le bateau, et
• Une étape de mise à l'eau de ladite plateforme de lancement et de récupération comprenant le bateau, ladite étape de mise à l'eau entrainant le passage d'une position hors flot dans laquelle le plancher flottant repose sur le plancher de soutien à une position à flot dans laquelle le plancher flottant flotte à la surface de l'eau et dans laquelle le bateau repose au moins en partie sur le plancher flottant.

The invention further relates to a method of launching a boat using a launch and recovery platform according to the invention, said method comprising:

• A step of attaching the launch and recovery platform according to the invention supporting the boat, and
• A step of launching said launch and recovery platform comprising the boat, said step of launching into the water causing the passage from an out-of-float position in which the floating floor rests on the support floor at a afloat position in which the floating floor floats on the surface of the water and in which the boat rests at least partly on the floating floor.

Once afloat, the boat will be able to set off quickly in a controlled manner without human presence on the boat or on the reception structure.

• Une étape de positionnement du bateau dans la plateforme de lancement et de récupération,
• Une étape de sécurisation comportant l'actionnement des vérins de verrouillage venant établir une liaison entre l'armature et le bateau,
• Une étape de levage, par un moyen de levage, de ladite plateforme de lancement et de récupération supportant le bateau,
• Une étape de libération du bateau comportant l'actionnement des vérins de verrouillage. Cela permet la sortie du bateau de la plateforme de lancement et de récupération. Ces vérins pourront être positionnés sur l'armature de la plateforme mais seront de préférence positionnés sur le bateau.

According to other optional characteristics of the method of launching a boat, the latter may optionally include one or more of the following characteristics, alone or in combination:

• A step of positioning the boat in the launch and recovery platform,
• A securing step comprising the actuation of the locking cylinders establishing a connection between the frame and the boat,
• A step of lifting, by lifting means, of said launch and recovery platform supporting the boat,
• A stage of releasing the boat including the actuation of the locking cylinders. This allows the boat to exit the launch and recovery platform. These jacks can be positioned on the frame of the platform but will preferably be positioned on the boat.

• Une étape de positionnement du bateau sur le plancher flottant d'une plateforme de lancement et de récupération selon l'invention,
• Une étape d'accrochage, à un moyen de récupération, de ladite plateforme de lancement et de récupération comprenant le bateau,
• Une étape de sortie de l'eau, par le moyen de récupération, de ladite plateforme de lancement et de récupération comprenant le bateau, ladite étape de sortie de l'eau entrainant le passage d'une position à flot dans laquelle le plancher flottant repose sensiblement à la surface de l'eau à une position hors flot dans laquelle le plancher flottant repose sur le plancher de soutien.

The invention further relates to a method for removing a boat from the water using a launch and recovery platform according to the invention, said method comprising:

• A step of positioning the boat on the floating floor of a launch and recovery platform according to the invention,
• A step of attaching, to a recovery means, of said launch and recovery platform comprising the boat,
• A step of exiting the water, by the recovery means, from said launch and recovery platform comprising the boat, said step of exiting the water causing the passage from a position afloat in which the floating floor rests substantially on the surface of the water to an out-of-water position in which the floating floor rests on the support floor.

Thanks to the angle formed by the cradle in relation to the lower floor, the boat is supported by gravity on the front of the reception structure without the risk of sliding backwards if the locking cylinders open by accident

• une étape de sécurisation du bateau comportant l'actionnement de vérins de verrouillage venant établir une liaison entre l'armature et le bateau. Ces vérins pourront être positionnés sur l'armature de la plateforme mais seront de préférence positionnés sur le bateau.

Depending on other optional features of the process of removing a boat from the water, the latter may include:

• a step of securing the boat comprising the actuation of locking cylinders establishing a connection between the frame and the boat. These jacks can be positioned on the frame of the platform but will preferably be positioned on the boat.

• La figure 1 représente une vue en perspective d'une plateforme de lancement et de récupération pour bateau selon un mode de réalisation de la présente invention.
• La figure 2 représente une vue en perspective d'une armature d'une plateforme de lancement et de récupération pour bateau selon un mode de réalisation de la présente invention.
• La figure 3 représente une illustration décrivant un mode de réalisation d'une plateforme de lancement et de récupération pour bateau selon un mode de réalisation préféré de l'invention.
• La figure 4 représente une illustration d'un plancher flottant d'une plateforme de lancement et de récupération pour bateau selon l'invention.
• La figure 5 représente une illustration d'un ber flottant d'une plateforme de lancement et de récupération pour bateau selon l'invention.
• La figure 6 représente une illustration d'un système d'amortissement et de guidage d'une plateforme de lancement et de récupération pour bateau selon l'invention.
• La figure 7 représente une vue de côté d'une plateforme de lancement et de récupération pour bateau selon un mode de réalisation de la présente invention lorsque la plateforme est hors flot.
• La figure 8 représente une vue de côté d'une plateforme de lancement et de récupération pour bateau selon un mode de réalisation de la présente invention lorsque la plateforme est à flot.
• La figure 9 représente une illustration d'un mode de réalisation d'un système de guidage et sécurisation d'un bateau à une plateforme de lancement et de récupération selon l'invention.
• La figure 10 représente un schéma d'un procédé de mise à flot d'un bateau selon un mode de réalisation de la présente invention.
• La figure 11 représente un schéma d'un procédé de sortie de l'eau d'un bateau selon un mode de réalisation de la présente invention.

Other advantages and characteristics of the invention will appear on reading the following description given by way of illustrative and non-limiting example, with reference to the appended figures:

• There figure 1 represents a perspective view of a boat launch and recovery platform according to one embodiment of the present invention.
• There figure 2 represents a perspective view of a frame of a launch and recovery platform for a boat according to one embodiment of the present invention.
• There Figure 3 represents an illustration describing an embodiment of a launch and recovery platform for a boat according to a preferred embodiment of the invention.
• There Figure 4 represents an illustration of a floating floor of a boat launch and recovery platform according to the invention.
• There Figure 5 represents an illustration of a floating cradle of a launch and recovery platform for a boat according to the invention.
• There Figure 6 represents an illustration of a damping and guiding system of a launch and recovery platform for a boat according to the invention.
• There Figure 7 shows a side view of a boat launch and recovery platform according to one embodiment of the present invention when the platform is out of the water.
• There figure 8 shows a side view of a boat launch and recovery platform according to one embodiment of the present invention when the platform is afloat.
• There Figure 9 represents an illustration of an embodiment of a system for guiding and securing a boat to a launching and recovery platform according to the invention.
• There Figure 10 represents a diagram of a method of launching a boat according to one embodiment of the present invention.
• There Figure 11 represents a diagram of a process for removing water from a boat according to one embodiment of the present invention.

Aspects of the present invention are described with reference to flow charts and/or block diagrams of methods and apparatus (systems) according to embodiments of the invention.

In the figures, flow charts and block diagrams illustrate the architecture, functionality and operation of possible implementations of systems, methods according to various embodiments of the present invention.

[Description of the invention]

In the remainder of the description, the expression " set of profiles " or " profiles " corresponds to structural elements such as beams or bars cut according to predetermined dimensions and serving as a base in the context of mechanical constructions requiring assembly complex.

The term “ enclosure ” within the meaning of the invention any structure adapted to allow the reception of a boat within the structure. When the term " entrance " is mentioned in connection with the enclosure or more generally with the launch and recovery platform, we mean an opening allowing the passage of at least part of the boat inside the frame.

The term "framework" within the meaning of the invention corresponds to an assembly of parts or elements, such as profiles for example, forming a structure adapted to accommodate and support a floating vehicle.

By “translation”, within the meaning of the invention, is meant a movement of a solid, for which each point of the solid moves along the same trajectory and at the same speed. A horizontal translation relative to another object could for example correspond to a movement parallel to said other object between a first position and a second position. Conversely, a vertical translation, within the meaning of the invention, may correspond to a translation movement of a solid, for which each point of the solid moves perpendicular to another object, between a first position and a second position.

By “ coupled ”, within the meaning of the invention, is meant connected, directly or indirectly, with one or more intermediate elements. Two elements can be mechanically coupled.

The term " removable ", within the meaning of the invention, corresponds to the ability to be detached, removed or dismantled easily without having to destroy means of fixing, either because there is no means of fixing, or because the fixing means are easily and quickly removable (for example a notch, a screw, a tab, a lug, a clip system). For example, by removable, it must be understood that the object is not fixed by welding or by another means not intended to allow the object to be detached. Conversely, by “ irremovable ” we must understand that the object is fixed by welding or by another means not intended to allow the object to be detached.

By “ber” we mean a structure supporting a boat. This can in particular correspond to a metal frame equipped with skids on which a boat rests.

“ Boat ” means any floating vehicle, whether autonomous or not, and equipped with a hull and/or floats.

In the remainder of the description, the same references are used to designate the same elements.

As has been mentioned, the deployment and recovery of surface vehicles (or boats) with or without a pilot are often complex to implement in the sense that they involve significant personnel, necessary to secure and carry out the various tasks. stages, for the recovery or deployment of the surface vehicle. This is particularly the case when the sea is rough and the surface vehicle is subject to pitching or rolling movements, making it particularly complicated and risky for marine personnel to deploy or recover the surface vehicle.

The inventors therefore developed a new launch and recovery platform for boats. This platform can allow the deployment and recovery of a surface vehicle without direct human intervention but also serve as a mooring point for the surface vehicle once the platform is anchored at sea, moored to a quay or once on land. surface vehicle storage device.

This platform has the particularity of having a floating floor intended to at least partially support the boat when the platform is afloat. This floating floor is advantageously arranged within the platform so as to have at least one degree of freedom of vertical movement relative to the frame. This helps reduce the effect of swell on the platform, particularly when it supports the boat afloat.

In addition, the inventors have also developed a system for securing the boat, particularly for use when the boat is positioned within the frame.

Thus, according to a first aspect, the invention relates to a launch and recovery platform 1 for a boat.

In particular, and as illustrated in figure 1 , a launch and recovery platform 1 for a boat according to the invention comprises a frame 10, flotation means 20 and a floating floor 30.

The frame 10 is arranged so as to be able to accommodate a boat 2 (eg at least part of the boat 2), or more generally any floating vehicle, motorized or not, with or without a pilot. The frame is advantageously arranged to accommodate only part of the boat 2 leaving part of the boat protruding from the frame. Indeed, preferably, the platform is arranged so that a part of the boat, such as for example propellers positioned at the rear of the boat, is located outside the frame.

To accommodate and support a boat 2, the frame 10 comprises for example a set of profiles or any other structural element capable of forming such a frame and in particular an enclosure capable of accommodating a boat. In particular, the enclosure will include an opening through which a boat can pass to accommodate itself at least partly within the frame. This entrance will preferably be on one side of the frame so that the boat can enter the enclosure when it is floating on the water. In the context of the present invention, the armature may include several entrances with for example an entrance from the upper face and an entrance on the side or the rear face. Preferably, the frame has a single entry on the rear face corresponding to the entry point of the boat into the frame, said entry preferably being made thanks to the thrust of the engines. The motors as illustrated in the figures can remain outside the frame, pointing upwards when platform 1 is afloat and downwards when the frame is afloat.

The profiles or other structural elements are advantageously designed from materials having mechanical characteristics adapted to support the load of the launch and recovery platform 1 as well as the boat 2 that said platform is intended to accommodate. By way of non-limiting examples, the profiles forming the frame 10 can be mainly made of metal or a metal alloy. In particular, the profiles forming the frame 10 may be made of iron or an iron alloy such as steel. Titanium or aluminum can also be used, depending on the strength required. Alternatively, the profiles or other structural elements could be made of composite materials (reinforcement and polymers) or polymers. It may also be desirable for the material of the frame 10 to be resistant to corrosion or protected by painting and/or cathodic protection since the platform 1 is designed to remain in water for long periods (> 1 month).

Advantageously, the profiles can have a thickness of at least 2 millimeters (mm), and can reach a thickness of 4mm, 6mm, 8mm or more depending on the desired mechanical characteristics.

The profiles can also have a square geometry and be hollow. The steel used for forming the profiles can for example correspond to S235 or even S275 steel in order to meet the standards of the offshore sector, in particular the ISO EN 10855 standard and the DNV-GL 2.7-1 standard.

In addition, the set of profiles of the frame 10 may comprise at least one transverse beam and/or at least one rigid longitudinal beam 101 forming the upper face of the frame 10. Said rigid transverse and longitudinal beam 101 may advantageously correspond to metal steel beams of type IPN 120 (for “i” with normal profile 120). Preferably, the upper face comprises two rigid transverse beams 101 respectively fixed to the ends of two longitudinal beams 101, said longitudinal beams 101 being parallel to each other.

In order to allow manipulation of the launch and recovery platform 1, the upper face may comprise at least two, preferably at least four lifting rings 110 intended to cooperate with a lifting means. Preferably, each of the rigid transverse or longitudinal beams 101 may comprise two lifting rings 110 positioned respectively at the ends of said rigid transverse or longitudinal beams 101.

As illustrative examples, a lifting ring 110 can be made of S235 steel and have an orifice adapted to allow coupling with a hooking device.

Alternatively, a lifting ring 110 can correspond to a lifting yoke shackles made mainly of S355 steel, a metal cable sling made of high-strength galvanized steel S355 or even a triple ring made mainly of S355 steel.

The frame of the platform 1 according to the invention will also include a support floor 11. Such a support floor is intended to support a floating floor integrated into the platform 1 and which will be described below.

As is illustrated in figure 1 , the support floor 11 may be formed from a plurality of profiles 106. Alternatively, it may be formed from one or more plates assembled so as to form a support for a floating floor.

In particular, the support floor 11 can form a cradle comprising a plurality of skids 108 intended to support the boat 2 when said launch and recovery platform 1 is in the out-of-water position. The support floor 11 can for example comprise at least four skates positioned so as to support the boat 2 above the floating floor when the platform 1 is out of the water.

The skates 108 can be associated with telescopic arms so as to be adapted to any type of boat. The telescopic arms may or may not be motorized and remote controlled. In addition, in certain embodiments, the skates 108 may be equipped with bearings.

The support floor 11 could be connected to a lower base 12 of the frame 10. It could for example be connected via profiles 106 or spacers to the lower base 12. In order to increase the mechanical strength of the frame, it may include crosspieces between the support floor 11 and the lower base 12.

The crosspieces or spacers 106 may be rigid metal tubes welded together. The support floor 11 and more generally the frame 10 may be capable of supporting a significant weight, for example more than 2 tons, preferably more than 10 tons, more preferably more than 20 tons, for example around 25 tons.

Alternatively, the support floor 11 can form the lower base 12 of the frame 10. The lower base 12 corresponds to the lower face of the frame 10. This is the face on which the platform rests when it is out of water. .

As illustrated in figure 1 , the launch and recovery platform 1 also includes flotation means 20.

Indeed, as has been mentioned, launch and recovery platform 1 will be able to remain at sea for a long time. Furthermore, the design of the platform can adapt to different lengths of vessels and the flotation means 20 help to maintain a parallel relationship between the upper face of the frame 10 and the waterline.

The flotation means 20 allow the platform to float on the water but must also, in combination with the floating floor, ensure stabilization at sea of the recovered boat.

The flotation means 20 can include any material floating in the water. In particular embodiments, the flotation means 20 are composed of a polymeric material such as various natural and synthetic rubbers, or open or closed cell foams. The flotation means 20 may be solid or inflatable.

Preferably, the flotation means 20 comprise expanded foam such as expanded polystyrene foam (EPS).

In addition, they can be attached to the frame 10.

The flotation means 20 will for example be of longitudinal shape. The flotation means 20 can be dimensioned such that when afloat, part of the flotation means 20 extends above the surface of the water. The flotation means 20 may in particular take the form of at least two floats 72, preferably lateral. In particular, the flotation means 20 may consist of two cylindrical plastic floats filled with expanded polystyrene foam (EPS).

The flotation means 20 can be permanently or removably fixed to the frame 10. In one embodiment, as illustrated in figure 2 , the reinforcement may include profiles 110 arranged so as to be able to at least partially crimp the flotation means 20.

The launch and recovery platform 1 also includes a floating floor 30 illustrated in particular in the figure 1 .

As already presented, the floating floor 30 is essential. It will be arranged within platform 1 so as to support, at least partially, boat 2 when platform 1 is afloat. Advantageously it will support the front part of the boat 2 and will have a degree of freedom of vertical movement relative to the frame 10 allowing it to float freely on the surface of the water independently of the vertical movements of the frame 10.

Thus, a floating floor 30 according to the invention will be coupled to the frame 10 so as to be movable in vertical translation relative to the frame, such as for example relative to the support floor 11 or to the lower base 12.

The floating floor 30 can also be coupled to the frame 10 so as to be additionally movable in horizontal translation, in particular relative to the support floor 11. This is particularly visible at the figure 1 . The floating floor 30 is coupled to the frame 10 by an attachment means 34 which can take the form of a connecting ring 34 arranged to enclose at least one guide bar 109 fixed to the frame 10. Thus, the floating floor 30 is advantageously equipped with an attachment means 34 allowing freedom of movement relative to the frame 10. However, as will be presented subsequently, the horizontal translation movements of the floating floor can be limited by a system securing 3 of the boat 2.

The attachment means 34 according to figure 1 can have any form of opening at the level of the connecting ring, for example an opening in the shape of an ellipse or parallelepiped. In particular, the attachment means 34 according to the figure 1 presents at the level of the connecting ring an opening in the shape of a parallelepiped also allowing horizontal translation of the floating floor 30 relative to the support floor 11 or to the lower base 12.

Furthermore, given that the width of the opening of the connecting ring 34 is a little larger than the diameter of the guide bar 209 then the floating floor 30 also has little transverse movement relative to the support floor 11 or at the lower base 12.

The floating floor 30 can also be coupled to the frame 10 by means of a slide-type connection, a ring equipped with a polymer pad (eg high-density or medium-density polyethylene, polyamide) sliding on a vertical structure acting as a rail, or a combination of rings and bars attached to the frame. Advantageously and more preferably, the floating floor 30 will be coupled to the frame 10 by means of a combination of rings, preferably fixed to the floating floor and bars, preferably fixed to the frame. This embodiment makes it possible to reduce the clearances to improve the precision of the guidance.

The floating floor 30 is intended to support the boat 2 at least partially at sea. Thus, it has dimensions adapted to this function. In particular, it may have a surface in contact with water greater than 2 m ² , preferably greater than 10 m ² , more preferably greater than 15 m ² , even more preferably greater than 25 m ² .

In addition, the floating floor 30 may have a thickness greater than 10 cm, preferably greater than 20 cm, more preferably greater than 30 cm.

It could be composed like the flotation means 20 of any material floating in water. In particular embodiments, the floating floor 30 is composed of a polymeric material such as various natural and synthetic rubbers, or open or closed cell foams. Preferably, the floating floor 30 is formed from floating modular blocks. These blocks can be fitted into each other so as to form the floating floor 30. Alternatively, the floating floor can be formed from a wood-epoxy composite floor or from a roto-molded plastic shape.

The floating floor 30 can form a planar structure. However, preferably, it forms a structure comprising at least two planes and more preferably several planes so as to at least partially follow the shape of the hull of the boat 2. In addition, it may include openings allowing the passage of bars verticals involved in the vertical translation of the floating floor or allowing passage of the skids 108 associated with the cradle.

Thus, the floating floor 30 may include a plurality of openings arranged to allow the positioning of the plurality of skates 108 on the boat 2 when said launch and recovery platform 1 is in the out-of-water position.

In the context of the present invention, the launch and recovery platform 1 is advantageously arranged to move from a configuration in which the floating floor 30 rests on the support floor 11 when the launch and recovery platform 1 is out of the water , to a configuration in which the floating floor 30 floats on the surface S1 of the water when the launch and recovery platform 1 is afloat.

This is particularly illustrated in figures 7 And 8 .

In the Figure 7 , launch and recovery platform 1 is out of flow. Gravity therefore induces the positioning of the floating floor 30 on the support floor 11. The boat for its part rests on the floating floor 30. Alternatively, in the presence of runners 108 crossing the floating floor 30, the boat 2 could rest on the runners 108.

As illustrated, the launch and recovery platform 1 may include a lower base 12, distinct from the support floor 11. This lower base 12 may be formed of profiles. It is part of the frame 10 and it advantageously constitutes the part of the frame 10 resting on the ground (e.g. a quay or a ship platform).

In this configuration, the support floor 11 will advantageously present a plane forming, with respect to the lower base 12, an angle β greater than or equal to 10°, preferably greater than or equal to 15°, more preferably greater than or equal to 20°, even more preferably greater than or equal to 25°. This angle β will generally be less than 60°. Preferably, the angle may be between 10° and 45°, preferably between 20° and 30°, even more preferably between 25° and 35°. When the floating floor is not formed of a single plane then the angle is preferably calculated between the longitudinal axis of the floating floor and a plane formed by the lower base 12.

Out of the water, the boat 2 may rest at least partly on the floating floor 30 itself resting on the support floor 11. Alternatively, the support floor 11 may form a cradle comprising a plurality of skids 108. This embodiment was particularly illustrated in figure 2 And 3 . In this configuration, the floating floor 30 will rest on the support floor 11 but the boat 2 will not rest on the floating floor 30 but on the skids 108 associated with the cradle formed by the support floor 11. This has the advantage of maintaining a position inclined towards the front of the boat 2 during its storage out of water but also to preserve the mechanical properties of the floating floor given that it will not be crushed by the boat 2.

Thus, out of the water, the boat 2 hosted by the launch and recovery platform 1 will be positioned in a safety position in which the engines of the boat 2 will be raised allowing easier inspection and less risk of tipping or damage during handling the loaded platform 1.

Furthermore, in this configuration, and as illustrated in figure 8 , when the launch and recovery platform 1 is floated, the floating floor 30 will be arranged so as to float on the surface of the water S1. Advantageously, given that the engines of a boat represent a significant weight, the boat will be slightly inclined and at least part of the propellers of the engine(s) can be submerged. Thus, while the platform allows for securing outside the water, it also allows, without additional manipulation, to place the boat in a configuration in which it can move away autonomously from the platform when in the water.

Furthermore, as can be observed in the illustration of the figure 8 , the floating floor 30 is advantageously arranged so as to comprise, in the afloat position, a plane forming an angle α of at most 30° with the surface of the water S1. Thus, it allows the boat 2 to rest on the surface of the water and preferably slightly inclined towards the rear so that its propeller(s) or the water intake(s) of its propulsion hydrojet(s) are arranged under the surface S1 of the water. It will therefore automatically be in position to leave platform 1. When the floating floor 30 is not formed of a single plane then the angle is preferably calculated between the longitudinal axis of the floating floor 30 and a plane formed by the water surface S1.

In addition, the floating floor 30 may be arranged so as to comprise, in the afloat position, a plane forming an angle Δ of at least 10° relative to the support floor 11 of the frame 10. Preferably, the angle Δ will be at least 20°, preferably at least 25°. Indeed, advantageously the platform 1 allows the boat to tilt from a position out of the flow inclined towards the front to a position with the flow inclined towards the rear and this without the aid of cylinders or other motorized systems. When the floating floor 30 is not formed of a single plane then the angle is preferably calculated between the longitudinal axis of the floating floor 30 and the longitudinal axis of the support floor 11.

In certain embodiments, the support floor 11 may form the lower base 12 of the launch and recovery platform 1. Thus, it will not be possible to differentiate these two elements and there will therefore be no particular angles. However, the support floor 11, as has already been mentioned, may include the plurality of pads 108. These pads 108 may be arranged so that the longitudinal axis of the boat 2 supported by said plurality of pads 108 forms an angle β relative to the support floor 11 greater than or equal to 10°, preferably greater than or equal to 15°, more preferably greater than or equal to 20°, even more preferably greater than or equal to 25°. This angle β will generally be less than 60°. Preferably, the angle may be between 10° and 40°, preferably between 20° and 35°, even more preferably between 25° and 30°. When the floating floor is not formed of a single plane then the angle is preferably calculated between the longitudinal axis of the floating floor and a plane formed by the lower base 12.

In particular, the plurality of skates 108 may have lengths selected so as to induce such an angle and therefore an inclination of the boat forward when the platform 1 is out of the water.

A launch and recovery platform 1 according to the invention may include a security system 3 for the boat 2.

As described in connection with the Figure 9 , such a security system 3 includes a structure for accommodating a boat 2. It can also include at least two guide arms 302.

The reception structure is preferably formed by a lower profile 304 and an upper profile 305 and is arranged so as to match the shape of part of the bow of the boat 2. Preferably, the reception structure of the boat 2 can be rotomolded.

The securing system 3 is advantageously fixed, via attachment means 301, to the launch and recovery platform 1, in particular to a profile 107 dedicated to securing the boat 2.

In order to limit the stresses applied to the profile 107 when the boat 2 is stowed, the attachment means 301 of the securing system 3 can be arranged to form a slide connection with the profile 107 dedicated to stowage and allow vertical movement of the securing system 3, preferably relative to the lower base. Indeed, this can be advantageous when the launch and recovery platform 1 is deployed in a sea with significant swell movements.

In order to maintain the boat 2 once stowed, the securing system 3 advantageously comprises two guide arms 302 extending radially from the reception structure towards the boat 2. The guide arms 302 are arranged to hold the boat 2 a times in the reception structure of the security system 3.

In particular, they will be able to guide the bow within the frame during translation towards the front of the boat in a process where the more the boat 2 advances, the more it becomes centered.

To facilitate the guiding and centering of the boat 2, the guide arms 302 may comprise lateral centering elements 302-1 which may include grooves capable of accommodating part of the bow of the boat 2. The centering elements 302-1 laterals can be formed from a rigid or semi-rigid material adapted to allow the absorption of shocks between the boat 2 and the securing system 3 and consequently the launch and recovery platform 1. For example, the lateral centering elements 302-1 can be made of plastic or of a polymer adapted to undergo elastic deformation and return to its original shape after having been deformed. In addition, the lateral centering elements 302-1 can be adapted to stiffen during an impact and return to their original shape after having suffered the impact.

In all cases, the lateral centering elements 302-1 preferably comprise a recess adapted to accommodate a guide element, such as a rail, positioned on either side of the bow of the boat 2. Preferably , the recess may have a decreasing width from a first end of the lateral centering element 302-1 to a second end of the lateral centering element 302-1. As an illustrative example, the lateral centering element 302-1 may have a funnel shape making it easier to insert and pass the guide rail and therefore to maintain the boat 2 by the guide arms 302. Thus the boat 2 can be centered via double guidance along a horizontal axis and along a vertical axis. In particular, the securing system 3 is arranged so that the more the boat advances within the frame, the more the securing system 3 matches the shape of the bow (degree of movement between the stage and the securing system). security 3 reduced) and therefore the more precise its centering. This three-dimensional centering, easy and precise, can advantageously be coupled with locking the boat 2 in position.

In order to improve the grip and therefore the holding of the boat 2 by the securing system 3, said securing system may include lateral locking elements 302-2. The lateral locking elements 302-2 are advantageously positioned on each guide arm 302 and formed by a metal alloy or a rigid polymer. Preferably in such a way as to form strikes in which cylinders can be locked. Alternatively they can be carried by other profiles and be independent of the guide arms 302.

Each of the locking elements 302-2 can have a suitable housing or shoe acting as a striker to receive one end of a cylinder positioned on the boat 2. effect, as is visible on the Figure 6 , the locking element 302-2 is positioned substantially against the hull of the boat 2 once the bow of the latter comes into contact with the reception structure of the securing system 3. Advantageously, a hydraulic cylinder can be positioned at the level of the contact surface between the hull of the boat 2 and the locking element 302-2 in order to hold the boat 2 and minimize shocks between the boat 2 and the launch and recovery platform 1. The housing or shoe adapted to receive one end of a jack positioned on the boat 2 could advantageously be removable and replaceable.

For example, boat 2 may have two hydraulic cylinders retracted on either side of the bow. The two cylinders are preferably positioned just below the guide rails of the boat 2 so that when the bow of the boat 2 comes into contact with the reception structure of the securing system 3, each hydraulic cylinder is positioned in view of a locking element 302-2 acting as a striker.

In order to further limit the mechanical constraints exerted by the boat 2 on the security system 3 and consequently on the launch and recovery platform 1, the security system 3 can include a plurality of damping elements. The main function of the damping elements is to absorb the shocks of the boat 2 on the securing system 3 in order to avoid any deformation of the reception structure and in particular of the lower 304 and upper 305 profiles. For this, the elements damping can be made of a material such as that described in connection with the lateral centering elements 302-1.

Thus, the securing system 3 may comprise a damping element forming a shoe 304-1 fixed to the lower profile 304 and arranged to absorb a shock between the boat 2 and the floating floor 30. In addition, the lower profile 304 may comprise two support arms 303 extending radially from the reception structure towards the boat 2. The two support arms 303 are arranged to allow the fixing of a damping element forming a lower cover 306 covering the entire profile lower 304. The lower cover advantageously has a shape adapted to the nose of the boat 2, formed in part by the bow of the boat 2, which is thus positioned abutting against the lower cover 306 participating in maintaining the boat 2 and protecting it against abrasions. Advantageously, the shoe 304-1 is fixed to the floating floor in a removable or immovable manner. For example, part of the floating floor could be formed from integral floats making it possible to create a solid junction associated with the shoe.

Like the lower cover 306, the security system 3 can include a damping element forming an upper cover 307. Advantageously, the upper cover 307 is fixed on the upper profile 307 covering the entire upper profile 305 The upper cover 307 advantageously has a shape adapted to the nose of the boat 2, formed in part by the bow of the boat 2, which is thus positioned abutting against the upper cover 307 participating in maintaining the boat 2 and protecting it against damage. abrasions.

Finally, the securing system 3 may include a damping element forming a stopper 302-3 fixed to the guide arms 302 and arranged to absorb a shock between the boat 2 and the frame 10 of the launch and recovery platform 1 .

Thus, such a security system 3 allows the boat 2 to be maintained in a launch and recovery platform 1 according to the invention and prevents any damage to the boat 2, the security system 3 and the launch and recovery platform 1 , in particular by minimizing or even avoiding rolling, lurching, pitching, yaw, yaw and/or heaving movements which could generate such damage.

In addition, all of the damping elements constitute interchangeable wear parts, that is to say that said damping elements are fixed in a removable manner.

As illustrated in figure 5 , the launch and recovery platform 1 according to the invention may also include a floating cradle 50, preferably made of polymer or polymer composite positioned at the entrance to the enclosure formed by the profiles of the frame 10, preferably fixed to at least a third profile of the set of profiles. Such a floating cradle 50 allows support of the hull at the level of the engines of the boat 2, thus relieving the forces on the structure of the hull when the launch and recovery platform 1 is afloat. The buoyancy of this floating cradle can be adjusted in partially ballast it to adjust the recovery of the efforts and the trim of the boat 2 on the floor 30 afloat.

The launch and recovery platform 1 according to the invention may include ballasts 40 positioned opposite said opening to allow the trim of the assembly to be adjusted during lifting.

As illustrated in figures 2 Or 7 , in order to allow the positioning of flotation means, the set of profiles forming the frame 10 can comprise at least one longitudinal profile 105 positioned on one side or preferably both sides of the frame. Preferably, the set of profiles forming the frame 10 comprises two parallel longitudinal profiles 105 positioned respectively on the two sides as an extension of the entrance to the enclosure.

As illustrated in Figure 6 , the launch and recovery platform 1 may include guide means 61 and a plurality of fenders 62. These elements will facilitate the positioning of the boat 2 within the frame 10.

The guide means 61 may take the form of slides guarding in particular the entrance to the frame 10, said slides being fixed to the ends of the longitudinal profiles 105 of the frame 10 facilitating on the one hand the entry of the boat 2 and on the other hand on the other hand its positioning at the level of the security system 3 in the launch and recovery platform 1.

Preferably, the guide means 61 can take the form of tubes, tube sections, pads, inflatable air chambers, or even rubber or polymer rollers.

The guide means 61 can for example correspond to guide rails fixed to each of the longitudinal profiles 105 and positioned at the entrance to the launch and recovery platform 1.

The fenders 62 can advantageously be fixed on all or part of each of the longitudinal profiles 105 in order to cushion and protect the boat 2 during its entry or exit from the launch and recovery platform 1.

In particular, the set of profiles may comprise at least one longitudinal profile 105 positioned on a face adjacent to the entrance to the enclosure and adjacent to the support floor 11, said longitudinal profile further comprising the guide means 61 and a plurality of fenders 62.

The guide means 61 and the plurality of fenders 62 are advantageously fixed to the longitudinal profiles 105.

Launch and recovery platform 1 can be used in the absence of any engine. In fact, it can be designed to be moored to a quay, to be anchored in open water or even to be stored above water.

Platform 1 may also be equipped with wheels or skids allowing it to be launched into and out of the water on an inclined plane or launching slipway. Its movement can be carried out using a cable and a winch located on the hold or on platform 1. The wheel system can also be operated by motors powered by an electric or hydraulic device located on the platform 1.

Alternatively, the launch and recovery platform 1 may be equipped with one or more motors allowing it to move, preferably autonomously in the waters whether or not it is loaded with a boat. In particular, the platform 1 may include electric motors capable of dynamic positioning of the platform 1 for example in relation to the boat 2. Thus, the platform 1 may include a control module configured to allow remote control of the platform and/or autonomous navigation.

Platform 1 may also be equipped with means of communication for example radio, GSM or satellite and/or location with for example a GNSS system (Geolocation and Navigation by a Satellite System). The means of communication may in particular be configured to establish a relay between the boat and a ship or a maritime construction wishing to control or communicate with the boat 2.

In addition, launch and recovery platform 1 may be equipped with energy storage systems, whether in the form of electrical energy, fuel cells or even fossil fuel. Thus, such a platform could be used to at least partially refuel the boats accommodated at the level of the frame 10. The energy stored on board (for example, batteries) may be necessary by the platform 1 to power navigation lights or communications equipment if these elements are present.

In addition, as has been described, the platform 1 can include an enclosure intended to accommodate a boat 2 but it can also include several enclosures or an enclosure intended to accommodate several boats 2.

When using Platform 1 described above, no operator on the platform or swimmer around the platform is required to launch or recover a boat. Thus, according to another aspect, the invention relates to the use of a launch and recovery platform 1 according to the invention as an autonomous receptacle of a boat 2.

As has been presented, such a platform is particularly relevant in the context of a process of launching or recovering a boat at sea and in particular when the sea is rough.

Thus, according to another aspect, the invention relates to a method 200 for launching a boat 2.

A method of launching a boat 2 is illustrated in Figure 10 and it preferably uses a launch and recovery platform 1 according to the invention.

Such a method may include a step of lifting 240 of the launch and recovery platform 1 supporting the boat 2, and a step of launching into the water 250 of said launch and recovery platform comprising the boat 2.

It may also include a support step 210, via the floating floor 30, of the boat 2 in the launch and recovery platform 1. Alternatively, the floating method 200 may include a step 210 of supporting the boat 2 by a cradle of the launch and recovery platform 1. In addition, the floating method 200 may include a step 220 of attaching the launch and recovery platform 1 comprising the boat 2.

Boat 2 can be positioned in platform 1 for off-water launch and recovery. However, advantageously, the boat 2 can be positioned in the platform 1 for launching and recovering afloat. The boat 2 can be lifted for example by a crane and launched independently with a set of 4 slings, the same for the launching and recovery platform 1, then the boat 2 enters the launching and recovery platform 1. recovery afloat.

When the boat 2 has already been positioned at the level of the frame 10, before it is launched, the boat can be supported by the floating floor 30 or by a cradle, said cradle preferably comprising a plurality of skids 108.

A method of launching a boat 2 according to the invention also includes a step 220 of attaching the launch and recovery platform 1, including or not the boat 2.

The method according to the invention may include a securing step 230 of the boat 2, before the lifting step 240 of the launch and recovery platform 1, within the frame 10. In particular, this securing step 230 may in particular include the embedding of the bow of the boat 2 in a reception structure of the frame 10.

In addition, the securing step 230 may include the actuation of articulated arms establishing a connection between the frame 10 and the boat 2. These articulated arms may be positioned on the boat 2 or on the frame 10. Preferably they are positioned on the frame 10 and more particularly within a security system 3. However, the securing step 230 may preferably include the actuation of articulated arms positioned on the boat 2 establishing a connection between the armature 10 and the boat 2. More preferably, the securing step may preferably involve locking the cylinders integrated into the hull of the boat 2 in the locking elements 302-2 acting as a striker.

Advantageously, the guide arms 302 of the platform 1 according to the invention will be flexible with a spring effect or actuated by pressing on a stop on the bow of the boat causing a leverage effect. The guide arms 302 will preferably be configured to fit into a dedicated housing or a dedicated rail and positioned on the frame 10 or the boat 2 and preferably on the boat 2.

The lifting step 240 of the launch and recovery platform 1, whether or not supporting the boat 2, may be carried out by lifting means such as a crane.

The method according to the invention comprises a particular step of launching into the water 250. Conventionally, the launching step 250 can be carried out by a lifting means such as a crane or by sliding or rolling using means of a winch or wheels with motorized hubs on an inclined plane, a ramp or a slipway.

Conventionally, this launching step results in the launch and recovery platform 1 moving from an out-of-water position to an afloat position.

Finally, the method according to the invention may include a step of releasing 260 of the boat 2. Unlike the securing step 230, the releasing step 260 may include the actuation of articulated arms such as arms of guidance 302 establishing a connection between the frame 10 and the boat 2. The guide arms 302 will preferably be configured to separate from a dedicated housing or a dedicated rail in order to allow the exit of the boat 2 from the platform 1 launch and recovery.

However, advantageously, in the out-of-water position, the floating floor 30 rests on the support floor 11 while in the afloat position the floating floor 30 floats on the surface S1 of the water.

In these two positions, the boat 2 will preferably rest at least partly on the floating floor 30 and more preferably it will not rest entirely on the floating floor 30.

Even more preferably, in the out-of-water position, the boat 2 rests on a plurality of skids 208 associated with a cradle formed by the frame 10. As has been described, the cradle can be formed by the support floor or by the lower base.

According to another aspect, the invention relates to a method 400 for removing water from a boat 2.

A process for removing water 400 from a boat 2 is illustrated in Figure 11 and it preferably uses a launch and recovery platform 1 according to the invention.

The water outlet method 400 may include a step of positioning 410 of the boat 2 on the floating floor 30 of a launch and recovery platform 1, said launch and recovery platform 1 preferably corresponding to the platform 1 according to the present invention.

The positioning step may include a movement of the boat 2 so as to engage in the entrance to the enclosure of the armature 10. This can be facilitated by the presence of guide means 61.

The method 400 of leaving the water may also include a step 420 of securing the boat 2 within the frame 10. This securing may in particular include the embedding of the bow of the boat 2 in a reception structure of the frame 10.

In addition, the securing step may include the actuation of articulated arms such as guide arms 302 establishing a connection between the frame 10 and the boat 2. These articulated arms can be positioned on the boat 2 or on the frame 10. Preferably they are positioned on the frame 10 and more particularly within a security system 3.

The guide arms 302 will preferably be configured to fit into a dedicated housing or a dedicated rail and positioned on the frame 10 or the boat 2 and preferably on the boat 2.

The securing step may preferably involve locking the cylinders integrated into the shell 2 in the locking elements 302-2 acting as a striker.

The water outlet method 400 according to the invention further comprises a step 430 of attaching, to a recovery means, said launching and recovery platform 1 comprising the boat 2. The recovery means may be a lifting means such as a crane but also any means capable of extracting a platform from the water such as a motor or winch associated with a ramp, wheels with motorized hubs on an inclined plane, or even a launching slipway .

The attachment step 430 may be followed by a water exit step 440 from said launch and recovery platform 1 comprising the boat 2. This step can be carried out by recovery means. Recovery can be done by lifting but also by sliding or rolling. This step of exiting the water 440 will result in the passage from an afloat position in which the floating floor 30 floats on the surface S1 of the water to an off-float position in which the floating floor 30 rests on the support floor 11.

In addition, this step of exiting the water 440 will result in the passage from a position afloat in which the boat rests at least partly on the floating floor 30, and preferably therefore substantially horizontal or with the front raised, to a position in which the boat rests on the floating floor or on a cradle with the rear of the boat raised, notably facilitating certain maintenance operations.

Thus, the present invention provides a solution allowing the launching and reception of the boat which can be operated simply, without risk for operators, and which is effective in particular in rough seas. In addition, such a solution makes it possible to facilitate subsequent maintenance operations on a boat.

The foregoing description of the various embodiments has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms described, and of course many modifications and variations are possible in light of the above teaching. Examples of embodiments, as described above, have been chosen and described in order to best explain the principles of the invention and its practical application in order to thus enable other specialists in the art to best use the invention in various embodiments and with various modifications adapted to the particular use envisaged. It is intended that the scope of the invention is defined by the appended claims.

Claims (18)

1. A boat launch and recovery platform (1) comprising:

   - a frame (10) for receiving a boat (2), said frame including a profile assembly forming an enclosure comprising an entrance and a support floor (11),

   - flotation means (20) attached to the frame (10), and

   - a floating floor (30) coupled to the frame (10) so as to be vertically translatable, with respect to said frame (10),

   said launch and recovery platform (1) being arranged to transition from a configuration in which the floating floor (30) rests on the support floor (11) when the launch and recovery platform (1) is out of water, to a configuration in which the floating floor (30) floats on a surface (S1) of the water when the launch and recovery platform (1) is afloat.
2. The launch and recovery platform (1) according to claim 1, wherein the frame (10) is made of metal or a metal alloy such as steel.
3. The launch and recovery platform (1) according to any of claims 1 or 2, further comprising a securing system (3), said securing system (3) including a docking structure for the boat (2) arranged so as to conform to the shape of part of a bow of the boat (2) and at least two guide arms (302) arranged to hold the boat (2).
4. The launch and recovery platform (1) according to claim 3, wherein the docking structure is arranged so as to be vertically translatable with respect to the lower base of the frame, preferably the docking structure is, furthermore, fixed to the floating floor.
5. The launch and recovery platform (1) according to any one of claims 1 to 4, wherein the floating floor (30) includes a means of attachment (34) to the frame (10) selected among: a slider-type connection, a ring equipped with runners sliding on a tube, a rail, or a ring capable of sliding on a vertical structure of the frame (10).
6. The launch and recovery platform (1), according to any one of claims 1 to 5, wherein the floating floor (30) comprises at least one connecting ring arranged to surround at least one guide bar (109) fixed to the frame (10).
7. The launch and recovery platform (1) according to any one of claims 1 to 6, wherein the support floor (11) forms a cradle comprising a plurality of skids (108) for supporting the boat when said launch and recovery platform (1) is in the out-of-water configuration.
8. The launch and recovery platform (1) according to claim 7, wherein the floating floor (30) comprises a plurality of openings arranged to allow positioning of the plurality of skids (108) under the boat (2) when said launch and recovery platform (1) is in the out-of-water configuration.
9. The launch and recovery platform (1) according to any one of claims 1 to 6, wherein the floating floor is arranged so as to support the boat (2) at least partially when said launch and recovery platform (1) is in the out-of-water configuration.
10. The launch and recovery platform (1) according to any one of claims 1 to 9, further comprising a lower base (12), separate from the support floor (11), said support floor (11) having a plane forming, with respect to the lower base (12), an angle (β) greater than or equal to 10°.
11. The launch and recovery platform (1) according to any one of claims 1 to 6, wherein the support floor (11) forms a cradle comprising a plurality of skids (108), said support floor (11) forms a lower base (12) of the launch and recovery platform (1), and the plurality of skids (108) have lengths selected so that a longitudinal axis of the boat (2) supported by said cradle forms an angle (β) with respect to the support floor (11) greater than or equal to 10°.
12. The launch and recovery platform (1) according to any one of claims 1 to 11, further comprising at least one, preferably at least four lifting rings (110) for cooperating with a lifting means.
13. The launch and recovery platform (1) according to any one of claims 1 to 12, further comprising a floating cradle (50) positioned at the entrance to the enclosure formed by the profile assembly of the frame (10).
14. The launch and recovery platform (1) according to any one of claims 1 to 13, further comprising guide means (61) and a plurality of fenders (62).
15. A use of a launch and recovery platform (1) according to any one of claims 1 to 14 as an autonomous receptacle for a boat (2).
16. A method (200) of launching a boat (2) by means of a launch and recovery platform (1) according to any one of claims 1 to 14, said method comprising:

    - a step of hooking (220) the launch and recovery platform (1) supporting the boat (2), and

    - a step of putting (250) in the water said launch and recovery platform (1) comprising the boat (2), thereby causing the transition from the out-of-water configuration in which the floating floor (30) rests on the support floor (11) to a float configuration in which the floating floor (30) floats on the surface (S1) of the water and in which the boat (2) rests at least partially on the floating floor (30).
17. A method of removing (400) a boat (2) from the water, said method comprising:

    - a step of positioning (410) the boat (2) on the floating floor (30) of a launch and recovery platform (1) according to any one of claims 1 to 14,

    - a step of hooking (430), to a recovery means, said launch and recovery platform (1) comprising the boat (2),

    - a step of removing (440) from the water, using the recovery means, said launch and recovery platform (1) comprising the boat (2), thereby causing the transition from an afloat configuration in which the floating floor (30) rests substantially on the surface (S1) of the water to an out-of-water configuration in which the floating floor (30) rests on the support floor (11).
18. The method of removing (400) from the water according to claim 17, further comprising securing (420) the boat (2) including actuating locking cylinders establishing a connection between the frame (10) and the boat (2).

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