EP0012098A1 - Schiff vom Typ Katamaran mit zentralem Vordersteven - Google Patents

Schiff vom Typ Katamaran mit zentralem Vordersteven Download PDF

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Publication number
EP0012098A1
EP0012098A1 EP79430021A EP79430021A EP0012098A1 EP 0012098 A1 EP0012098 A1 EP 0012098A1 EP 79430021 A EP79430021 A EP 79430021A EP 79430021 A EP79430021 A EP 79430021A EP 0012098 A1 EP0012098 A1 EP 0012098A1
Authority
EP
European Patent Office
Prior art keywords
bow
waterline
catamaran type
submerged
hulls
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.)
Withdrawn
Application number
EP79430021A
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English (en)
French (fr)
Inventor
Michel Goulley
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0012098A1 publication Critical patent/EP0012098A1/de
Withdrawn legal-status Critical Current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
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly

Definitions

  • the present invention relates to sailing or mechanically propelled boats of the catamaran type, with a view to creating a bow effectively protecting them against waves coming from the front and allowing a continuous and unhooked deck similar to that of monohull ships of the front end to back.
  • trimaran type hulls are better protected from the front, but their central hull, the largest whatever their shape, also creates great resistance to advancement and the side hulls are only floats intended to ensure stability of the central hull.
  • trimeras (patent n ° 2194602), the part close to the rear of which is of the catamaran type. But its central hull must descend lower than the side hulls and its bow must be rounded. This part whose shape and location are studied so that it is always submerged creates a heavy mass to move in the center of the boat and removes certain advantages of the catamaran.
  • the invention consists of a central bow E (FIGS. 1 and 2) similar to a monohull boat bow which extends backwards to a vertical transverse plane. sal Pl passing through a point A close to where the bow touches the waterline. This part of the bow therefore overhangs the waterline.
  • the bow is divided into two parts: a part Sl which, going aft and widening from the upper deck to the bottom of the hull, forms the hull of the ship and the outer sides of the side hulls ; and another surface S2 which creates, by the fallout towards the sides of the lower part of the bow, going towards the rear, the internal sides of the lateral hulls.
  • the submerged part of the bow which does not descend lower than the side hulls, is refined to a keel with a sharp profile like the leading edge of the bow.
  • This submerged part of the bow is therefore only intended to support the bow and cut the water during shocks due to pitching, while avoiding on its rear eddies harmful to a good flow of the water streams.
  • this keel rises and disappears in a rigid connection L between the side hulls, at a point B located in a transverse vertical plane P2 passing not far from the place where, coming from the front, the boat reaches its greatest width. It does not have to be exactly in this plane, but it must be on its bow and in the bow of the boat. After this point and going backwards, there may continue to remain a slight recess D, V-shaped oriented downwards or upwards, but only to ensure rigidity.
  • the boat looks like a catamaran whose two hulls are joined by a homogeneous and continuous link, a single stern joining the two hulls above the link L.
  • a rudder G intended to facilitate certain maneuvers. Particularly on powered vessels mechanical gear and in reverse, this rudder will receive the water streams sent by the propulsive device between the two hulls and will facilitate progress.
  • the horizontal plane in which the link L is located, the top of the vault V3, is at the same level or lower than the rear of the vaults V1 and V2.
  • the shape of the sides C1 1 and C2 (FIG. 4) of the submerged rear part of the bow forming the side of the side vaults closest to the longitudinal axis of the boat, is constructed so that its water lines substantially follow the same curve as the water lines at the front of the inner part of the neighboring lateral hulls C3 and C4 and is substantially parallel to them.
  • the front end of the side hulls is located substantially in the same transverse plane as that where the submerged part of the bow reaches its widest dimension.
  • This larger largaur, corresponding to the master torque of the submerged part of the bow, must not be greater than the width of the master couple of side hulls so that the rear of the bow can disappear before the master couple of side hulls or in the transverse plane corresponding to this master couple.
  • the lateral hulls therefore reach their greatest width in a transverse plane passing through point B or on the rear of it, that is to say when the bow keel disappears in the connection L.
  • the C3 and C4 sides receive a forward movement from the water spurned by the submerged part of the bow. It is therefore necessary that, for the speed most suited to each boat, the pressure exerted on the water molecules to separate them at each point from C3 and C4 is as much as possible to that which exists at the same levels and in the same transverse plane on the outside of the side shells C5 and C6.
  • the lateral hulls are therefore not symmetrical with respect to their mid-longitudinal vertical plane P3 and P4.
  • these lateral shells can be symmetrical with respect to their mid-longitudinal vertical plane.
  • FIG. 5 shows in broken lines T1, from the rear to the front, the surface of the immersed couples of the side shells. Abscise the length of the boat, ordinate the surfaces. In dotted lines T2, the surface of the couples of the submerged part of the bow. The solid line T3 represents the total of the surfaces of the pairs of the submerged parts of the boat. This curve, so that the Archimedes' thrust is regular over the entire length, must increase regularly from the rear to the rear master torque and decrease regularly from the front master torque to the front.
  • the boat described has a waterline located under the horizontal plane passing through the top of the lateral arches. However, the builder can locate the waterline at this plane or slightly above it. In this case the exterior appearance of the boat is exactly the same as that of a classic monohull boat.
  • This type of hull provides, in addition to the above advantages and those mentioned in the description, a very stable possibility of voluntary stranding, the whole boat resting on three places: the undersides of the two side hulls and the lower part from the bow. This makes it possible, in coastal regions subject to the tide, to easily maintain the submerged parts.
  • This invention is of interest to all sea, lake or river boats, sailing or mechanically propelled, which want to keep a great fineness of water lines while having a great roll stability, a big security and a defense of the sea. comparable to that of monohulls.
  • Some boats may wish, for aesthetic reasons, to have an external appearance resembling monohulls. Constructed in this way, they may look exactly alike while enjoying the benefits cited.
  • a particularly interesting application can be made in the field of pleasure yachts and in that of passenger ships.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
EP79430021A 1978-11-24 1979-11-16 Schiff vom Typ Katamaran mit zentralem Vordersteven Withdrawn EP0012098A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7833900A FR2442176A1 (fr) 1978-11-24 1978-11-24 Bateau de type catamaran a etrave centrale
FR7833900 1978-11-24

Publications (1)

Publication Number Publication Date
EP0012098A1 true EP0012098A1 (de) 1980-06-11

Family

ID=9215571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79430021A Withdrawn EP0012098A1 (de) 1978-11-24 1979-11-16 Schiff vom Typ Katamaran mit zentralem Vordersteven

Country Status (3)

Country Link
EP (1) EP0012098A1 (de)
ES (1) ES486001A1 (de)
FR (1) FR2442176A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504434A1 (de) * 1985-02-09 1986-08-14 Peter 2000 Hamburg Labentz Ueberwasserschiff mit strahlantrieb
DE4127939A1 (de) * 1991-08-25 1993-03-04 Schottel Werft Rumpfanordnung bei trimaranen
WO2000075007A3 (en) * 1999-06-08 2001-05-03 William Francis Pentecost Stable tunnel hull
RU191140U1 (ru) * 2019-06-07 2019-07-25 Владимир Владимирович Ларькин Корпус катамарана со ступенью и воздушным каналом в днище
RU192097U1 (ru) * 2019-06-18 2019-09-03 Владимир Владимирович Ларькин Глиссирующий катамаран
GB2571960A (en) * 2018-03-14 2019-09-18 Safehaven Marine Ltd A hybrid boat hull

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505286B1 (fr) * 1981-05-08 1986-07-18 Souaille Pierre Nouvelles formes de coques destinees a reduire la consommation d'energie des navires de peche et de servitude off shore

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1169344A (fr) * 1957-03-12 1958-12-26 Dispositif triangulaire de coques annulant le tangage et le roulis et par voie de conséquence la dérive
FR1414492A (fr) * 1963-11-25 1965-10-15 Perfectionnements aux bateaux
FR1432674A (fr) * 1965-02-08 1966-03-25 Navili S A R L Bateau
US3702598A (en) * 1971-06-07 1972-11-14 Jack J Szptyman Watercraft
FR2194602A1 (de) * 1972-08-01 1974-03-01 Lauenborg Jens
GB1368059A (en) * 1971-08-24 1974-09-25 Orr A H Stabilised boat hull
US3871317A (en) * 1973-07-16 1975-03-18 Jack J Szpytman Watercraft
FR2258300A1 (en) * 1974-01-17 1975-08-18 Colombel Raymond Boat hull with three different cross sections - has double hull at rear extending into single front hull
FR2258303A1 (de) * 1974-01-21 1975-08-18 Stradco Inventions & Res Co
FR2387840A1 (fr) * 1977-04-22 1978-11-17 Anvar Coque de bateau

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1169344A (fr) * 1957-03-12 1958-12-26 Dispositif triangulaire de coques annulant le tangage et le roulis et par voie de conséquence la dérive
FR1414492A (fr) * 1963-11-25 1965-10-15 Perfectionnements aux bateaux
FR1432674A (fr) * 1965-02-08 1966-03-25 Navili S A R L Bateau
US3702598A (en) * 1971-06-07 1972-11-14 Jack J Szptyman Watercraft
GB1368059A (en) * 1971-08-24 1974-09-25 Orr A H Stabilised boat hull
FR2194602A1 (de) * 1972-08-01 1974-03-01 Lauenborg Jens
US3871317A (en) * 1973-07-16 1975-03-18 Jack J Szpytman Watercraft
FR2258300A1 (en) * 1974-01-17 1975-08-18 Colombel Raymond Boat hull with three different cross sections - has double hull at rear extending into single front hull
FR2258303A1 (de) * 1974-01-21 1975-08-18 Stradco Inventions & Res Co
FR2387840A1 (fr) * 1977-04-22 1978-11-17 Anvar Coque de bateau

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504434A1 (de) * 1985-02-09 1986-08-14 Peter 2000 Hamburg Labentz Ueberwasserschiff mit strahlantrieb
DE4127939A1 (de) * 1991-08-25 1993-03-04 Schottel Werft Rumpfanordnung bei trimaranen
WO2000075007A3 (en) * 1999-06-08 2001-05-03 William Francis Pentecost Stable tunnel hull
GB2571960A (en) * 2018-03-14 2019-09-18 Safehaven Marine Ltd A hybrid boat hull
GB2571960B (en) * 2018-03-14 2022-12-28 Safehaven Marine Ltd A hybrid boat hull
RU191140U1 (ru) * 2019-06-07 2019-07-25 Владимир Владимирович Ларькин Корпус катамарана со ступенью и воздушным каналом в днище
RU192097U1 (ru) * 2019-06-18 2019-09-03 Владимир Владимирович Ларькин Глиссирующий катамаран

Also Published As

Publication number Publication date
FR2442176A1 (fr) 1980-06-20
ES486001A1 (es) 1980-05-16
FR2442176B1 (de) 1981-05-22

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Effective date: 19811205