A marine vessel is disclosed that comprises at least 3 hulls. At least one of the hulls has a first hull part and a second hull part, the first hull part corresponding to about 60% of the maximum underwater length of the at least one hull, and the second hull part corresponding to about 40% of the maximum underwater length of the at least one hull. A first ratio between a maximum underwater plan area at the first hull part and a waterline plan area at the first hull part at any navigable waterline is greater than about 2.0. A second ratio between a maximum underwater plan area at the second hull part and a waterline plan area at the second hull part at any navigable waterline is less than the greater of about half the first ratio or about 1.15. The waterline plan area at the second hull part is greater than the waterline plan area at the first hull part.
B63B 1/12 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
A system (40, 80) for inhibiting marine growth or other fouling in a cavity (26) of a watercraft (20) which is at least partially submersed when the watercraft (20) is sitting in water. The system (40, 80) comprising a cover (41, 81) for sealing an opening (31, 32, 73) of the cavity (26) such that water is inhibited from entering the cavity (26) through the opening (31, 32, 73), and such that a displacing fluid that is introduced in to the cavity (26) and that displaces water from the cavity (26) is inhibited from escaping from the cavity (26) through the opening (31, 32, 73).
A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull, the main hull (15) and each side hull (17) adjacent thereto being interconnected by a bridge structure (19). The bridge structure (19) and the hulls (15, 17) connected thereby cooperating to provide a deck surface (21) adapted to carry a load. The main hull 15) is configured to define at least one engine room (45) below the deck surface (21) and trunking (70) for provision of services to the engine room. The trunking (70) is routed below the area of the deck surface (21) required for carrying a load. Because the trunking (70) is routed below the area of the deck surface (21) required for load-carrying, it does not extend through that area of the deck surface to impede load movements. This is particularly applicable for air trunking (70) for the delivery of ventilation air to the engine room (45) and discharge of ventilation air from the engine room. The air trunking (70) comprises one or more intake air trunks (71) and one or more discharge air trunks (73).
A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull. The multi-hulled vessel (10) is provided with motion control means (40) for providing damping to wave-induced motion, thereby offering ride control. The motion control means (40) comprises a forward motion damping device (41) disposed adjacent the bow (25) of the main hull (15), and two aft dampening devices (43) disposed one adjacent the stern (33) of each side hull (17). With this arrangement, one of the motion damping devices (41, 43) is located at or near each apex of a notional triangular envelope (44) of the vessel (10). Each motion damping device (41, 43) is configured to resist wave-induced motion of the multi-hulled vessel (10) and thereby provide a damping effect. Each motion damping device (41, 43) may comprise an underwater hydrofoil (45), although other damping arrangements are possible.
B63B 39/06 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
A marine vessel comprises at least two hulls 2 and a portion 1 disposed between the two hulls 2, a propulsion system 5 operable using a gaseous fuel, and a storage means 3 for containing a supply of gaseous fuel for a propulsion system 5, the storage means being accommodated in the portion 1 between the two hulls 2. The storage means may be further protected from damage where the gaseous fuel storage is placed in the marine vessel a significant distance aft from the bow and the space forward of the storage means is deformable in the event of a collision.
B63B 1/12 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
B63B 3/70 - Reinforcements for carrying localised loads, e.g. propulsion plant, guns
B63B 11/04 - Constructional features of bunkers or ballast tanks, e.g. with elastic walls
B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
B63H 21/14 - Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
B63H 21/20 - Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
A vessel (30) comprising a hull (15) having an apparent centre of pitch (23) located at a position between about 10% and 35% of the length of the vessel (10) measured from the aftermost point (17) of the vessel on the design waterline. The hull (15) may be bare, or alternatively may be fitted with a damping system (31) located forwardly to provide damping forces to reduce the vertical motion at the bow and hence the vertical accelerations. In one arrangement, the vessel (10) may comprise a single hull vessel. In another arrangement, the vessel (10) may comprise a multi-hulled vessel.
A vessel (10) comprising a hull (15) having a the Longitudinal Centre of Flotation (LCF) at the design load waterline (25) at rest with a value of less than about 35% of the vessel waterline length measured from the aftermost point (19) of the vessel waterline. The design vessel speed at design load waterline is at or above Froude Number of 0.45. The hull (15) has a length-to-beam ratio on the design waterline of greater than about 8.0. The Longitudinal Centre of Buoyancy (LCB) is between about 30% and 45% of the vessel waterline length measured from the aftermost point (19) of the vessel waterline (25). In one arrangement, the vessel (10) may comprise a single hull vessel. In another arrangement, the vessel (10) may comprise a multi-hulled vessel.
A vessel (10) comprising a hull (11) having a hull length (L) measured on any navigable waterline (21) and a buoyant volume (∇ ). The modified slenderness ratio of the hull, L3/4/∇ 1/3 is greater than or equal to 2.5 where the length is measured in metres and the buoyant volume is measured in cubic metres. In one arrangement, the vessel (10) may comprise a single hull vessel. In another arrangement, the vessel (10) may comprise a multi-hulled vessel.
A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull. The multi-hulled vessel (10) is provided with motion control means (40) for providing damping to wave-induced motion, thereby offering ride control. The motion control means (40) comprises a forward motion damping device (41) disposed adjacent the bow (25) of the main hull (15), and two aft dampening devices (43) disposed one adjacent the stern (33) of each side hull (17). With this arrangement, one of the motion damping devices (41, 43) is located at or near each apex of a notional triangular envelope (44) of the vessel (10). Each motion damping device (41, 43) is configured to resist wave-induced motion of the multi-hulled vessel (10) and thereby provide a damping effect. Each motion damping device (41, 43) may comprise an underwater hydrofoil (45), although other damping arrangements are possible.
B63B 39/06 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
B63B 1/12 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
A multi-hulled vessel (10) configured as a trimaran comprises a main hull (15) and at least one outer hull (17) to each side of the main hull (15) interconnected by a bridge structure (19) and a deck surface (21) adapted to carry a load. Main hull (15) defines at least one engine room (45) and trunking (70) for provision of services to the engine room (45) located below the deck surface (21). Since the trunking (70) is routed below the surface of the area of the deck surface (21) it does not impede load movements. Particularly applicable in ventilation of the engine room (45) through one or more intake air trunks (71) and discharge air trunks (73).
B63B 1/10 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
B63B 1/12 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
B63J 2/00 - Arrangements of ventilation, heating, cooling, or air-conditioning
B63H 21/32 - Arrangements of propulsion power-unit exhaust uptakesFunnels peculiar to vessels
A roll stabiliser (10) is disclosed which comprises a fixed fin portion (12) connected during use to a hull of a vessel so as to extend outwardly of the hull in a substantially non-vertical direction, a flap portion (14) rotatable relative to the fixed fin portion (12), the orientation of the flap portion (14) relative to the fixed fin portion defining the degree of roll stabilising force generated by the roll stabilizer (10), a shaft (16) connected to the flap portion (14) and extending during use through a vessel hull, a seal assembly (41) arranged to facilitate rotation of the shaft (16) whilst maintaining water tight integrity, and a first split bearing (18) disposed during use in a vessel hull on the shaft (16). The first split bearing (18) facilitates rotation of the flap portion (14) and comprises a first bearing portion (56), a second bearing portion (58) and operative bearing components (59), wherein access to the operative bearing components (59) and the seal assembly (41) is obtainable by separating the first and second bearing portions from each other.
B63B 39/06 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
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