EP0921060A2 - Boat - Google Patents

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Publication number
EP0921060A2
EP0921060A2 EP98500242A EP98500242A EP0921060A2 EP 0921060 A2 EP0921060 A2 EP 0921060A2 EP 98500242 A EP98500242 A EP 98500242A EP 98500242 A EP98500242 A EP 98500242A EP 0921060 A2 EP0921060 A2 EP 0921060A2
Authority
EP
European Patent Office
Prior art keywords
boat
swellings
keel
central
shows
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98500242A
Other languages
German (de)
French (fr)
Other versions
EP0921060B1 (en
EP0921060A3 (en
Inventor
Giovanni Massa Porrato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CASAN POVO VICENTE
Original Assignee
Tecnicas del Poliester GM SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tecnicas del Poliester GM SL filed Critical Tecnicas del Poliester GM SL
Priority to ES98500242T priority Critical patent/ES2205423T3/en
Publication of EP0921060A2 publication Critical patent/EP0921060A2/en
Publication of EP0921060A3 publication Critical patent/EP0921060A3/en
Application granted granted Critical
Publication of EP0921060B1 publication Critical patent/EP0921060B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/042—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull the underpart of which being partly provided with channels or the like, e.g. catamaran shaped

Definitions

  • the present invention refers to a boat, and more specifically to a launch, which shows a series of building peculiarities aimed to provide it with a high resistance, great lightness and a perfect stability against possible side rolls, it all on account of the incorporation of a keel with a determined configuration.
  • boats of this kind are widely known, built with light materials such as plastic, resins and polyester fibres, etc., and in which the keel is fastened on the lower surface of the hull, a watertight cavity being defined between both, that can be filled with air of with a filling material of low density.
  • the part forming the keel shows in its centre a rib which projects in a more pronounced way in the bows area; on the sides of this central rib, surfaces markedly flat are each laid out, which progressively bend as they extend away the central area of the boat in order to form the lower area of the sides.
  • This configuration of the keel, combined with the lightness of the boat, makes necessary to include in it a inner structure in order to provide it with a higher stiffness; on the other hand the configuration appreciably flat of the sides of the keel does not allow to obtain the wanted stability against the possible side rolls caused by the swell or by the moving of the crew on deck.
  • the boat object of the invention keeping the same composition of elements (keel and upper body) than the conventional boats, shows features in the configuration of the keel aimed to provide it with a great side stability and a high resistance, which allows to suppress any chassis or inner structure of reinforcement.
  • the lower surface of the keel defines three swellings appreciably semicylindrical placed in parallel to the longitudinal axis of the boat and which extend practically along the whole length of said boat, grooves or flutings of the same length being defined between said swellings.
  • the central swelling can show a height higher than the two side swellings defining, only the former and in the front end, two side planes that converge on a central edge, the purpose of which is to facilitate the penetration of said central swelling in the water; in the event that the three swellings show heights appreciably equal, the two side swellings will define in their front end an analogue edge to that of the central swelling.
  • the two side swellings are placed slightly sloping towards the rear area of the boat, adopting longitudinally a position appreciably slanting with regard to the central one.
  • Another of the advantages of this keel is that of reducing the surface in touch with the water when the boat is displacing with a high speed, the stability being kept since said contact is established at the medium area by the central swelling and at the two sides by means of the other two swellings.
  • the boat to the case consists of a keel (1) and an upper body (2) joint together by their passages (3), a watertight cavity being defined between them filled with air or with a filling material of low density, for instance polyurethane foam.
  • the upper body (2) can define in its medium area any configuration or element proper for this kind of boats, in order to allow a correct handling of the boat and lodging of the passengers.
  • the boat proposed here fumishes as main features that the keel (1) shows in its lower surface three swellings (4, 5 and 4), two of them on the sides (4) and one in the centre (5), appreciably semicylindrical, placed in parallel with regard to the longitudinal axis of the boat and which extend practically along the whole length of said boat, the grooves or flutings (6) being defined between said swellings.
  • the mentioned swellings (4 and 5) show their front ends bent towards the upper area in order to facilitate the displacement of the boat on the water; the central swelling (5) shows also in said front end two side planes (51) that converge on a central edge (52) the aim of which is to allow the penetration of said boat into the water.
  • the side swellings (4) are placed slightly sloping towards the rear area of the boat, adopting longitudinally a position appreciably slanting with regard to the central swelling (5), which in addition is more projecting that the aforementioned ones.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Bridges Or Land Bridges (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Glass Compositions (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Earth Drilling (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Accessories Of Cameras (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The present invention refers to a boat, and more specifically to a launch, which shows a series of building peculiarities guided to provide it with a high resistance, great lightness and a perfect stability against possible side rolls, it all on account of the incorporation of a keel (1) with a determined configuration, the inner surface of which defines three swellings (4,5) appreciably semicylindrical placed in parallel to the longitudinal axis of the boat and which extend practically along the whole length of said boat, grooves or flutings of the same length being defined between saids wellings.

Description

    OBJECT OF THE INVENTION
  • The present invention refers to a boat, and more specifically to a launch, which shows a series of building peculiarities aimed to provide it with a high resistance, great lightness and a perfect stability against possible side rolls, it all on account of the incorporation of a keel with a determined configuration.
    • BACKGROUND OF THE INVENTION
  • Today, boats of this kind are widely known, built with light materials such as plastic, resins and polyester fibres, etc., and in which the keel is fastened on the lower surface of the hull, a watertight cavity being defined between both, that can be filled with air of with a filling material of low density.
  • In this kind of boats the part forming the keel shows in its centre a rib which projects in a more pronounced way in the bows area; on the sides of this central rib, surfaces markedly flat are each laid out, which progressively bend as they extend away the central area of the boat in order to form the lower area of the sides.
  • This configuration of the keel, combined with the lightness of the boat, makes necessary to include in it a inner structure in order to provide it with a higher stiffness; on the other hand the configuration appreciably flat of the sides of the keel does not allow to obtain the wanted stability against the possible side rolls caused by the swell or by the moving of the crew on deck.
    • DESCRIPTION OF THE INVENTION
  • The boat object of the invention, keeping the same composition of elements (keel and upper body) than the conventional boats, shows features in the configuration of the keel aimed to provide it with a great side stability and a high resistance, which allows to suppress any chassis or inner structure of reinforcement.
  • According to the invention, the lower surface of the keel defines three swellings appreciably semicylindrical placed in parallel to the longitudinal axis of the boat and which extend practically along the whole length of said boat, grooves or flutings of the same length being defined between said swellings.
  • In order to facilitate the displacement on the water of the boat, the three mentioned swellings show the ends of the bows bent towards the upper area.
  • The central swelling can show a height higher than the two side swellings defining, only the former and in the front end, two side planes that converge on a central edge, the purpose of which is to facilitate the penetration of said central swelling in the water; in the event that the three swellings show heights appreciably equal, the two side swellings will define in their front end an analogue edge to that of the central swelling.
  • The two side swellings are placed slightly sloping towards the rear area of the boat, adopting longitudinally a position appreciably slanting with regard to the central one.
  • The alternation of the swellings with the intermediate grooves or flutings provides this keel with a great resistance; in addition, when a side roll takes place the side swellings act as balancing elements since, when a small side inclination is produced, an important volume of the swelling conceming the same side is introduced into the water, thus receiving immediately an upward thrust tending to balance the boat.
  • Another of the advantages of this keel is that of reducing the surface in touch with the water when the boat is displacing with a high speed, the stability being kept since said contact is established at the medium area by the central swelling and at the two sides by means of the other two swellings.
    • DESCRIPTION OF THE DRAWINGS.
  • In order to complement the description that is being made and with the object to facilitate a better comprehension of the features of the invention a set of drawings is attached to the present descriptive specification, as an integral part thereof, wherein it has been represented with an illustrative and not limiting character as follows:
    • Figure 1 shows a side view of the advocated boat.
    • Figure 2 shows a view from stem of the boat.
    • Figure 3 shows a bottom plan view of the boat.
    • Figure 4 shows a view from the bows of the same boat in the previous figures.
    PREFERABLE EMBODIMENT OF THE INVENTION
  • As it can be seen in the example of embodiment shown in the figures, the boat to the case consists of a keel (1) and an upper body (2) joint together by their passages (3), a watertight cavity being defined between them filled with air or with a filling material of low density, for instance polyurethane foam.
  • The upper body (2) can define in its medium area any configuration or element proper for this kind of boats, in order to allow a correct handling of the boat and lodging of the passengers.
  • Starting form this composition, already known, the boat proposed here fumishes as main features that the keel (1) shows in its lower surface three swellings (4, 5 and 4), two of them on the sides (4) and one in the centre (5), appreciably semicylindrical, placed in parallel with regard to the longitudinal axis of the boat and which extend practically along the whole length of said boat, the grooves or flutings (6) being defined between said swellings.
  • The mentioned swellings (4 and 5) show their front ends bent towards the upper area in order to facilitate the displacement of the boat on the water; the central swelling (5) shows also in said front end two side planes (51) that converge on a central edge (52) the aim of which is to allow the penetration of said boat into the water.
  • As it can be seen in the figure (1) the side swellings (4) are placed slightly sloping towards the rear area of the boat, adopting longitudinally a position appreciably slanting with regard to the central swelling (5), which in addition is more projecting that the aforementioned ones.
  • It is not considered necessary to extend longer this description so that any expert in this matter understands the scope of this invention and the advantages that arise therefrom.
  • The terms in which this specification has been drawn up should be always assumed in a wide and not limiting sense.
  • Materials, shape, size and disposition of the elements will be open to variation provided that this does not involve any alteration of the essential features of the invention, that are claimed below.

Claims (6)

  1. A boat, of the kind consisting of a keel and upper body, built with a light material and which are joint by their passages and define a watertight cavity filled with air or with a filling material of low density, characterised in that the keel shows in its inner surface three swellings, one in the centre and two in the sides, appreciably semicylindrical, placed in parallel to the longitudinal axis of the boat and defining between themselves grooves or flutings of the same length than the said swellings.
  2. A boat, as claimed in the previous claim, characterised in that the front ends of the swellings are bent towards the upper area with the purpose of facilitating the displacement of the boat on the water.
  3. A boat, as claimed in claim 1, characterised in that the side swellings are placed slightly sloped towards the rear area with regard to the central swelling.
  4. A boat, as claimed in claim 1, characterised in that the central swelling shows a higher height that the side swellings.
  5. A boat, as claimed in claims 1 and 4, characterised in that the front end of the central swelling defines two side planes converging on a central edge.
  6. A boat, as claimed in claim 1, characterised in that the swellings show a height appreciably equal, and define in their front ends a central edge.
EP98500242A 1997-11-05 1998-11-05 Boat Expired - Lifetime EP0921060B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES98500242T ES2205423T3 (en) 1997-11-05 1998-11-05 SHIP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9702860 1997-11-05
ES9702860 1997-11-05

Publications (3)

Publication Number Publication Date
EP0921060A2 true EP0921060A2 (en) 1999-06-09
EP0921060A3 EP0921060A3 (en) 2001-07-25
EP0921060B1 EP0921060B1 (en) 2003-08-27

Family

ID=8301806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98500242A Expired - Lifetime EP0921060B1 (en) 1997-11-05 1998-11-05 Boat

Country Status (4)

Country Link
EP (1) EP0921060B1 (en)
AT (1) ATE248097T1 (en)
DE (1) DE69817512T2 (en)
ES (1) ES2205423T3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE408278C (en) * 1923-06-21 1925-01-12 Anderssen Fa J Watercraft with screw drive and with channels extending in the longitudinal direction of the ground
US2989939A (en) * 1956-12-17 1961-06-27 Lowell E Engleking Power boat hull
GB1152613A (en) * 1966-10-28 1969-05-21 Austin Packard Farrar Improvements in or relating to Hull Forms
US3625173A (en) * 1969-08-08 1971-12-07 Mitton Hulls for power boats
IT212310Z2 (en) * 1987-07-01 1989-07-04 Akzo Srl HULL FOR SAILING BOAT

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE69817512T2 (en) 2004-06-09
EP0921060B1 (en) 2003-08-27
ATE248097T1 (en) 2003-09-15
ES2205423T3 (en) 2004-05-01
EP0921060A3 (en) 2001-07-25
DE69817512D1 (en) 2003-10-02

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