EP1953080A1 - Sea life-saving device with several inflatable life rafts - Google Patents

Abstract

The device (1) has a container (2) including rigid shells (3, 4) and an inner partition (7) that subdivides the container into compartments (C, Ca). The container contains deflated and folded lifesaving rafts (5, 6) arranged in the respective compartments, where the raft (5) is a loading platform. An automatic triggering type deflation unit is associated with the raft (5) in a manner that the raft (5) is deflated when the device is operated. The raft (6) is associated with manual/automatic actuating type deflatable triggering units that trigger their deflation after deflation of the raft (5).

Description

The present invention relates generally to the field of survival at sea and, more specifically, relates to improvements made to marine survival devices comprising a container which encloses several pneumatic life rafts in the deflated and folded condition and inflating means for inflation of these during the operational implementation phase of the device.

Sea survival devices of the above kind are already known, with two pneumatic rafts enclosed in a common container.

Thus, the document US 4,362,517 discloses a set of two pneumatic rafts housed, in the deflated and folded state, in a common rigid container, together with common inflation means. During inflation, the two rafts are deployed simultaneously by being coupled to each other. However, the simultaneous deployment of the two rafts is possible only when it is rafts of relatively small dimensions. Simultaneous inflation would be impossible in practice when it comes to rafts of large or very large capacity (for example 100 or more people), and even more so when it comes to rafts of autoredressable type which must be isolated for able to recover if necessary.

The document US 4,639,229 discloses a parachute survival device which comprises a container containing two inflatable rafts; during the parachuting, the container is open and the two rafts, themselves suspended on respective parachutes and joined by a long floating halyard, are released temporally offset and are deposited on the water at a distance from each other. Such a device is specifically designed to rescue shipwrecked persons from an aircraft, but it is not designed structurally and functionally to be able to be implemented from a ship carrying passengers (liner, ferry, ... ) or a marine platform, to ensure the survival of a large number of people at sea.

The main purpose of the invention is to propose an improved arrangement of a sea-air survival device for several pneumatic rafts which is suitable for rapid operational implementation of the rafts including and especially in the case of large or very large rafts. capacity and / or in the case of rafts of autoredressable type, the device must further be able, if necessary, incorporate means for rapid evacuation of a large number of people from a ship.

• en ce que le container est constitué par plusieurs coques rigides assemblées mutuellement,
• en ce que le container renferme au moins une cloison intérieure le subdivisant en plusieurs compartiments en nombre égal à celui des coques et en ce que les cloisons sont solidarisées aux coques respectives, une coque d'un compartiment (premier compartiment) n'étant solidarisée à aucune cloison,
• en ce que les radeaux de survie dégonflés et pliés sont disposés respectivement dans les compartiments, ledit premier compartiment renfermant un premier radeau de survie,
• en ce que les moyens de gonflage sont du type à déclenchement automatique et associés fonctionnellement au moins au premier radeau de survie disposé dans le premier compartiment de manière que ce soit le premier radeau de survie qui soit gonflé en premier lorsque le dispositif de survie est mis en oeuvre opérationnellement, et
• en ce qu'aux autres radeaux de survie sont fonctionnellement associés des moyens de déclenchement de gonflage propres à déclencher leurs gonflages respectifs successivement un à la fois après le gonflage du premier radeau de survie.

For these purposes, the invention provides an offshore survival device comprising a container which contains several inflatable life rafts in the deflated and folded state and inflation means, which device, being arranged in accordance with the invention, characterizes

• in that the container consists of several rigid shells joined together,
• in that the container encloses at least one interior partition subdividing it into several compartments in number equal to that of the hulls and in that the partitions are secured to the respective hulls, a hull of a compartment (first compartment) being secured to no partition,
• in that the deflated and folded survival rafts are respectively arranged in the compartments, said first compartment enclosing a first liferaft,
• in that the inflating means are of the self-triggering type and operably associated with at least the first liferaft disposed in the first compartment so that it is the first life raft which is inflated first when the survival device is put into operation. implemented operationally, and
• in that the other life rafts are functionally associated inflation triggering means adapted to trigger their respective inflations successively one at a time after inflating the first liferaft.

Thanks to these provisions, each raft is inflated in isolation and can be deployed without being obstructed by another raft, which is essential for the operational implementation of rafts of very large capacity and therefore very large. In addition, the individual deployment of rafts is also essential when it comes to self-refilling rafts whose self-refueling capacity can only be ensured if there is no hindrance to disturb the tipping in the event of inflation in reverse.

As for the inflating sequence of the rafts, several solutions are possible. Thus, according to the operational requirements, it is conceivable that the inflating trigger means of the other survival rafts are of the manually operated type or are of the automatically operating type. associated with means for detecting the end of inflation of the inflated life raft previously.

It can be provided that the inflation means comprise a plurality of inflation means respectively functionally associated with life rafts or even that the inflation means are common survival rafts.

It is also possible to provide a link between the successive liferafts so that, during the inflation of a liferaft, the remaining portion of the container containing the other life rafts remains secured to the life raft during inflation. Of course, it is a flexible link and of sufficient length so that the remaining floating part of the container can not be driven off during the deployment phase of the first raft, but also so that it does not interfere with the previous raft being deployed.

The provisions just described can be applied as such to sets of several liferafts, which reduces the space required on the deck of the vessel for the storage of the container containing the rafts (with equal capacity rafts, this common container being substantially less bulky and lighter than several containers each containing a single raft).

However, the arrangements according to the invention seem to have to find a particularly advantageous application in the context of high-capacity evacuation systems with high speed evacuation which are provided or are being provided today. large passenger ships (liners, ferries, ...). It is particularly in this context that can be expected that the first life raft envisaged in the context of the present invention is a boarding platform of which at least a portion is arranged in area of collection of evacuees, in particular with the help of a means of rapid evacuation. An example of such a boarding platform with collection area is given in the document FR 2 756 809 . Again in this context, it can be provided that the device further comprises an inflatable pneumatic slide which, in the storage condition of the device, is folded and wound around the container from its inlet end which is secured to the container . Advantageously then, the device may comprise own fastening means, in the use position, to secure the outlet end of the slide to the first liferaft to the right of the collection area thereof. In the same context, it is possible to provide connecting means for joining the first survival raft and each of the other survival rafts when they are deployed (possibly one after the other) so as to facilitate the passage of one to the other, including the boarding platform liferaft itself. The provisions that have just been described can find a particularly interesting application for rafts of very large capacity (typically several tens or even more than a hundred people) who start to equip passenger ships (liners). or cruise, car-ferries, ...).

• en ce que les premier et second radeaux de survie dégonflés et pliés sont disposés respectivement dans les deux demi-coques,
• en ce que la seconde demi-coque renfermant le second radeau de survie est fermée par une cloison de fermeture,
• en ce que les moyens de gonflage sont du type à déclenchement automatique et associés fonctionnellement au moins au premier radeau de survie disposé dans la première demi-coque de manière que ce soit le premier radeau de survie qui soit gonflé en premier lorsque le dispositif de survie est mis en oeuvre opérationnellement, et
• en ce qu'au second radeau de survie sont fonctionnellement associés des moyens de déclenchement de gonflage propres à déclencher son gonflage seulement lorsque le gonflage du premier radeau de survie est achevé.

The provisions which have just been explained seem to have to find a particularly interesting application for constituting sets to double liferaft, that is to say in a device comprising a container which is formed of two half-shells, respectively first and second half-shells, assembled to one another and which contains first and second pneumatic liferafts to deflated and folded state and inflation means, which device is characterized

• in that the first and second deflated and folded survival rafts are arranged respectively in the two half-shells,
• in that the second half-shell enclosing the second liferaft is closed by a closing partition,
• in that the inflating means are of the self-triggering type and functionally associated with at least the first liferaft disposed in the first half-hull so that it is the first life raft which is inflated first when the survival device is implemented operationally, and
• in that the second liferaft is functionally associated inflation triggering means adapted to trigger its inflation only when the inflation of the first liferaft is completed.

Conveniently, the inflating tripping means of the second liferaft may be of the manually operated type, or of the automatically operated type operatively associated with means for detecting the end of inflation of the first liferaft.

The inflating means may be made to comprise first and second inflation means respectively functionally associated with the first and second inflation means respectively second life rafts, or that they are common to the first and second liferafts.

It is desirable that during the implementation of the device the various elements remain integral with each other. To this end, it is possible to provide a link between the first liferaft and the second liferaft so that, as soon as the container is opened and when the first liferaft is inflated, the second closed half-hull enclosing the second liferaft life raft remains secured to the first liferaft.

The first liferaft can be a boarding platform of which at least a portion is arranged in the area of collection of evacuees. The device may then further comprise an inflatable pneumatic slide which, in the storage condition of the device, is folded and wound around the container from its outlet end; the device may also comprise own fastening means, in the use position, to secure the outlet end of the slide to the first liferaft to the right of the collection area provided therein. Optionally, the device may advantageously comprise connecting means for joining edge to edge the first and second liferafts once deployed.

• la figure 1 est une vue schématique en coupe transversale d'un dispositif de survie agencé conformément à l'invention ;
• la figure 2 est une vue schématique en coupe transversale d'un mode de réalisation préféré d'un dispositif de survie agencé conformément à l'invention ;
• la figure 3 est une vue schématique en perspective du dispositif de survie de la figure 2 en position d'ouverture ;
• la figure 4 est une vue schématique en perspective du dispositif de survie de la figure 2 après gonflage d'un premier radeau ;
• la figure 5 est une vue schématique de dessus du dispositif de survie de la figure 2 après gonflage du second radeau ;
• la figure 6 est une vue très schématique de côté d'une variante préférée de réalisation d'un dispositif de survie conforme à l'invention ;
• la figure 7 est une vue très schématique de face du dispositif de survie de la figure 6 en cours de mise en oeuvre ; et
• la figure 8 est une vue schématique en perspective du dispositif de survie de la figure 6 en position opérationnelle.

The invention will be better understood on reading the following detailed description of certain preferred embodiments given solely by way of purely illustrative examples. In this description, reference is made to the accompanying drawings in which:

• the figure 1 is a schematic cross-sectional view of a survival device arranged in accordance with the invention;
• the figure 2 is a schematic cross-sectional view of a preferred embodiment of a survival device arranged in accordance with the invention;
• the figure 3 is a schematic perspective view of the survival device of the figure 2 in the open position;
• the figure 4 is a schematic perspective view of the survival device of the figure 2 after inflation of a first raft;
• the figure 5 is a schematic view from above of the survival device of the figure 2 after inflation of the second raft;
• the figure 6 is a very schematic side view of a preferred embodiment of a survival device according to the invention;
• the figure 7 is a very schematic front view of the survival device of the figure 6 in the process of implementation; and
• the figure 8 is a schematic perspective view of the survival device of the figure 6 in operational position.

To the figure 1 to which reference is firstly made is very schematically represented a survival device at sea, generally designated by the reference numeral 1, which comprises a container 2 containing several pneumatic life rafts deflated and folded state as well as inflation means suitable for inflating the latter. According to the invention, the device 1 for survival at sea is arranged as described below.

The container 2 is constituted by several rigid shells 4, among which a particular shell 3 which will be discussed later, which are assembled mutually. The shells 3, 4 may be made of any suitable material used for the manufacture of containers for containing life rafts and the shells are shaped so that the container 2 has any desired shape appropriate to its function; the mechanical assembly of the shells 3, 4 is made to ensure the required mechanical strength of the container, especially if it is intended to be launched with water from a deck of a ship or from a platform.

Container 2 encloses at least one internal partition 7 subdividing it into several compartments C in number equal to that of shells 3, 4. In the example shown purely illustratively in FIG. figure 1 , the container 2 is provided with four internal partitions 7 advantageously arranged in a cross and integral with each other (for example they radiate around a central link L), which define four compartments C each representing about a quarter of the interior volume of the container 2, and the container 2 is delimited by four shells 3, 4 each extending over about a quarter of the perimetric extent of the container 2. The partitions 7 are secured in D to the shells 3, 4, but the aforesaid shell 4 a compartment Ca (which will be called first compartment in the suite) is not attached to any partition as visible at the figure 1 ; as a result, the two partitions 7 which define this first compartment Ca are secured to the edges of the two shells 3 adjacent to the shell 4 closing said first compartment Ca.

The survival rafts in the deflated and folded state, in number equal to that of the compartments C, are respectively enclosed in the compartments C. The aforesaid first compartment Ca encloses a life raft designated by the reference 5, which will be said first raft survival in following, and the other compartments C respectively contain liferafts designated by reference 6.

Finally, the inflation means (not shown on the figure 1 ) are of the self-trigger type and are functionally associated with at least the first survival raft disposed in the first compartment Ca so that it is this first life raft 5 which is inflated first when the survival device 1 is put into operation. works operationally.

Other life rafts 6 are operatively associated with inflation triggering means (not shown) capable of triggering their respective inflations successively one at a time after inflating the first life raft. These inflating tripping means of the other life rafts 6 may be of the manually operated type or may be of the self-actuating type operatively associated with inflation end detecting means of the inflated survival raft previously.

Depending on the applications and the implementation methods required for the survival device 1, it can be arranged that the inflating means comprise several inflation means functionally associated with the respective liferafts 5, 6, but it is also possible to consider that the inflation means are common to all liferafts, or to respective groups of life rafts.

In order for the survival device 1 to be implemented reliably and safely, it is desirable that all the elements (rafts being deployed or already inflated and parts of the container still closed) remain associated with each other at the same time. that time to allow their full deployment and to allow the boarding of passengers in a secure manner, including the configuration explained below. For these purposes, it is desirable to provide a link between the successive survival rafts so that, during the inflating of a liferaft, the remaining portion of the container containing the other life rafts remains secured to the life raft. inflating or inflated course.

In an interesting configuration of the survival device 1, especially when it comes to evacuate a large number of people on rafts of large or very large capacity (for example 100 or 150 people), it is interesting that the first liferaft 5 is a boarding platform of which at least a portion is arranged in the area of collection of evacuees.

The general provisions of the invention which have just been exposed may prove to be complex to implement in practice if the number of rafts enclosed in the container is high (container of very large dimensions and therefore very large weight difficult to put to water by launching from the top of a bridge, difficulty and length of deployment of the rafts, ...).

Therefore, an embodiment which proves practical to implement in all respects, and which as such constitutes the presently preferred embodiment, consists of a survival device comprising a container arranged to enclose two rafts. of survival, and this particular embodiment, currently preferred and satisfactorily satisfying the requirements of the practice, will now be described in even greater detail, it being understood that the particular provisions mentioned in this context of a survival device comprising a container containing two rafts of survival can be extrapolated for a survival device comprising a container containing a larger number of rafts.

To the figure 2 is very schematically illustrated a survival device at sea, generally designated by the reference numeral 1, which mainly comprises a container 2 which is formed of two rigid and mechanically resistant half-shells, respectively a first half-shell 3 and a second half-shell 4, which are assembled to one another. This container 2 contains respectively first and second inflatable life rafts 5, 6 in the deflated and folded state as well as inflating means (not shown) and all the equipment (not shown) necessary for the operation of the rafts. The design of the container 1, rafts 5, 6 and all the rest of the equipment can be any.

According to the invention, provision is made for the deflated and folded first and second survival rafts 5, 6 respectively in the compartments Ca, C respectively of the first and second half-shells 3, 4 of the container 2 and the container 2 is arranged in such a way that the second half-shell 4 enclosing the second raft 6 is closed in a D-tight manner by a closing partition 7. For the sake of clarity, at the figure 3 the container 1 is shown open, the two half-shells 3 and 4 arranged side by side. It is clearly seen the first raft 5 disposed in the first half-shell 3 which is open, while the second half-shell 4, enclosing the second raft 6 (not visible), is closed by the partition 7 which is secured to it in D tightly in any appropriate manner.

In addition, the inflating means (not visible because they are embedded in the web of the folded raft) are of the automatic release type and functionally associated with at least the first liferaft 5 disposed in the first half-shell 3 so that it is this first life raft 5 which is inflated first when the survival device 1 is implemented operationally. This situation is illustrated in figure 4 the survival device 1 has been launched (for example by being launched from the deck of a ship), the inflating means have been triggered, and the first raft 5 is in the course of completion of inflation or has just been inflated as shown, while the second raft is still enclosed in the second half-shell 4 closed by the partition 7 because the second liferaft 6 are functionally associated inflation-specific triggering means to trigger inflation only when inflation of the first liferaft 5 is completed.

The inflating tripping means of the second life raft 6 may be of the manually operated type: for example a crew member gets on the first raft 5 as soon as the inflation of this one is completed and triggers the inflation of the second one. raft 6 by manual traction on a percussion halyard (for example the halyard 8 visible at the figure 4 ). Alternatively, the inflating tripping means of the second life raft 6 may be of the automatically operated type functionally associated with detection means capable of detecting the end of the inflation of the first liferaft 5.

As regards the inflation means, according to operating constraints and cost constraints, they may comprise first and second inflation means associated respectively with the first and second survival rafts 5, 6, each tank of pressurized gas being embedded in the folded fabric of the corresponding raft as is common practice in a container containing a unique raft. But, if necessary, it is also conceivable that the inflation means are common to the first and second liferafts with a selection of the connection of the inflation gas source to the appropriate raft; in this case, however, the single pressurized gas tank is bulky and relatively difficult to house in the container.

Preferably, at least one tie 9 or halyard is provided between the first liferaft 5 and the second liferaft 6 so that, as soon as the container 2 is opened and when the first liferaft 5 is inflated, , the second closed half-hull 4 enclosing the second life raft 6, at least until it has been inflated, floats near the first liferaft 5 while remaining attached thereto as visible at the figure 4 .

To the figure 5 are illustrated two inflatable liferafts 5 and 6 inflated and, for example, moored to each other edge against edge including to facilitate boarding and distribution of passengers embarked.

The arrangements according to the invention as just described can find application in many practical operating configurations. However, it seems that a particularly interesting application of the invention relates to survival devices for a large number of people, for example for the equipment of large vessels passenger transport (such as liners or cruise ships, car ferries, etc.). For the arming of such vessels, it is currently planned life rafts large or very large capacity (typically several tens, or more than a hundred passengers). However, the operational implementation of such liferafts poses many problems both as regards the correct deployment of these rafts on the water for the transfer of passengers on board. The solution currently being developed consists in resorting to rapid mass evacuation means, in particular of the gravity type, which requires that the evacuated passengers first arrive on a collection platform from which they are immediately released so as to do not disturb the following people.

It is in this context that the provisions of the invention appear to be of great interest. Indeed, it can then be expected that, as is the case in the raft configuration more specifically illustrated in the figure 5 , the first liferaft 5 is a boarding platform of which at least a portion is cleared and arranged in area 10 for collecting evacuees. The document FR 2 756 809 discloses an arrangement of such a collection platform. The collected persons are evacuated immediately from the collection zone 10 and they are directed either towards adjacent zones 11 of the same boat 5, or preferably towards a liferaft (which then constitutes the second raft 6 mentioned above) which is moored to it edge against edge. Thus, according to the invention and logically, the collection platform 5, constituting the first life raft mentioned above in the context of the invention, is inflated first while the second raft 6 is inflated once the docking platform 5 fully inflated; it is even possibly conceivable to start receiving the first evacuees on the docking platform 5 while the second liferaft 6 is still being inflated.

Among the various gravity-type rapid mass evacuation means that are currently used or tested are pneumatic slides that can be stored in a relatively small volume in the deflated and bent state. It is then conceivable to constitute a survival device at sea combining such a pneumatic slide and a container containing two liferafts as described above.

To the figure 6 is shown very schematically an example of such a survival device 1 storage situation, for example on a bridge 12 of a ship 13, ready to be implemented operationally. The deflated slide 14 is in the form of an elongated flexible fabric element which is wrapped around the container 2 arranged as indicated above, the assembly being able to rest on a cradle 15 adapted and possibly being able to be surrounded by a tarpaulin 16 easy and fast removal protection. The outer end 18 of the slide in a rolled-up situation (which after deployment and inflation becomes the upper end or the entry end of the slide) is secured to the bridge in any appropriate manner by means of solidarity shown diagrammatically at 17. The other end 19 (or outlet end) of the slide 14 is secured (by means not visible in the figures) to the container 2, or more precisely to the first liferaft 5 enclosed therein.

For its implementation, the survival device 1 stored on the deck 12, after removal of the possible cover 16, is released and passes overboard. Driven by the weight of the container 2, the fabric of the slide 14 unfolds to the surface of the water and holds the container 2 floating on the water as shown in FIG. figure 7 .

It should be emphasized that, by the very design of the entire survival device, the toboggan fabric is secured, at its upper end or inlet end 18, to the deck 12 of the ship 13 by the means of 17 (shown schematically in figure 8 by mooring halyards 15 fixed to rings 16 or any other member provided on the deck 12) and, at its lower end or outlet end 19, to the first liferaft 5.

In a preferred embodiment, but which is however not exclusive, the toboggan 14 is first inflated with its own inflation means (not shown), then the first inflatable raft is inflated. 5 survival can be triggered by any appropriate means (manual pulling a percussion halyard, automatic triggered by the end of inflation of the slide) under the conditions described above.

Once the inflations of the first raft 5 and / or the slide 14 have been completed, the inflation of the second raft 6 is triggered, which can be carried out concomitantly with the inflation of the slide 14.

Finally, the survival device 1 is in operational position, as shown in FIG. figure 8 with the two rafts 5 and 6 inflated and moored to each other edge against edge (on the figure 8 , the canvas shelters covering the two rafts in the representation given to figure 6 are not shown), with the slide 14 inflated and extending from the deck 12 of the ship to which it is docked at 17 to the first raft 5 to which it is moored (the moorings are not visible at the figure 8 ), debouching in front of or in the collection area 10 of the first survival raft 5 forming a collection platform.

Claims (20)

Device (1) for survival at sea comprising a container (2) which contains several pneumatic survival rafts (5, 6) in the deflated and folded state as well as inflating means, characterized in that the container (2) consists of several rigid shells (3, 4) assembled together, in that the container (2) encloses at least one internal partition (7) subdividing it into several compartments (C, Ca) in a number equal to that of the shells (3, 4) and in that the partitions (7) are secured (D) to the respective shells, a shell (4) of a compartment (Ca) (first compartment) not being secured to any partition, in that the deflated and folded survival rafts (5, 6) are respectively arranged in the compartments (C, Ca), said first compartment (Ca) enclosing a first liferaft (5), in that the inflating means are of the automatic release type and functionally associated with at least the first survival raft disposed in the first compartment (Ca) so that it is the first survival raft (5) that is inflated first when the survival device (1) is operated operationally, and in that the other life rafts (6) are functionally associated with inflating triggering means capable of triggering their respective inflations successively one at a time after inflation of the first survival raft (5). Survival device according to claim 1, characterized in that the triggering means of inflating the other liferafts (6) are of the manually operated type. Survival device according to claim 1, characterized in that the inflating triggering means of the other life rafts (6) are of the automatically operating type functionally associated with means for detecting the end of inflation of the liferaft (5). inflated previously. Survival device according to any one of claims 1 to 3, characterized in that the inflation means comprise a plurality of inflation means respectively functionally associated with the liferafts (5, 6). Survival device according to any one of claims 1 to 3, characterized in that the inflating means are common to the liferafts (5, 6). Survival device according to one of Claims 1 to 5, characterized in that a link (9) is provided between the successive liferafts (5, 6) so that when a life raft is inflated , the remaining part of the container containing the other life rafts remains secured to the life raft during inflation. Survival device according to any one of claims 1 to 6, characterized in that the first liferaft (5) is a boarding platform of which at least a portion is arranged in area (10) for collecting evacuees. Survival device according to claim 7, characterized in that it further comprises an inflatable pneumatic slide (14) which, in the storage condition of the device (1), is folded and wound around the container (2) from from its output end (19). Survival device according to claims 7 and 8, characterized in that it comprises own fastening means, in use position, to secure the outlet end (19) of the slide (14) to the first liferaft ( 5) to the right of the collection area (10) provided therein. Survival device according to any one of claims 7 to 9, characterized in that it further comprises connecting means (9) for joining edge-to-edge the first liferaft (5) and each of the other liferafts (6) once deployed. Device (1) for survival at sea according to any one of claims 1 to 10, comprising a container (2) which is formed of two half-shells, respectively first and second half-shells (3, respectively 4), assembled to each other and which encloses first and second inflatable liferafts (5, respectively 6) pneumatics in the deflated and folded state and inflation means, characterized in that the deflated and folded first and second survival rafts (5, 6) are respectively arranged in the two half-shells (3, 4), in that the second half-shell (4) enclosing the second liferaft (6) is closed by a closing partition (7), in that the inflating means are of the automatic release type and functionally associated with at least the first liferaft (5) disposed in the first half-shell (3) so that it is the first liferaft (5). which is inflated first when the survival device (1) is operated operationally, and in that the second life raft (6) is functionally associated with inflation triggering means capable of triggering its inflation only when the inflation of the first liferaft (5) is completed. Survival device according to claim 11, characterized in that the inflating tripping means of the second liferaft (6) are of the manually operated type. Survival device according to claim 11, characterized in that the inflating release means of the second liferaft (6) are of the automatically operating type functionally associated with means for detecting the end of inflation of the first liferaft (5). ). Survival device according to any one of claims 11 to 13, characterized in that the inflation means comprise first and second inflation means respectively operatively associated with the first and second liferafts (5, 6). Survival device according to any one of claims 11 to 13, characterized in that the inflating means are common to the first and second liferafts (5, 6). Survival device according to one of Claims 11 to 15, characterized in that a link (9) is provided between the first liferaft (5) and the second liferaft (6) so that, as soon as opening the container (2) and during inflation of the first liferaft (5), the second half-shell (4) closed enclosing the second liferaft (6) remains secured to the first liferaft (5). Survival device according to any one of claims 11 to 16, characterized in that the first liferaft (5) is a boarding platform of which at least part is arranged in area (10) for collecting evacuees. Survival device according to claim 17, characterized in that it further comprises an inflatable pneumatic slide (14) which, in the storage condition of the device (1), is folded and wound around the container (2) from from its input end (18). Survival device according to claims 17 and 18, characterized in that it comprises own fixing means, in position of use, to secure the outlet end (19) of the slide (14) to the first liferaft ( 5) to the right of the collection area (10) provided therein. Survival device according to any one of claims 17 to 19, characterized in that it further comprises connecting means (9) for joining edge to edge the first and second liferafts (5, 6) once deployed .

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