A vessel is provided herein which comprises a primary hull and at least two hull members capable of being deployed from or retracted into tunnels or underneath overhangs in the primary hull. In various embodiments, the vessel comprises a means for controllably deploying and retracting the hull members. These members may further comprise a propulsion means capable of propelling the vessel. In other embodiments the vessel comprises a failsafe mode allowing the hull members to fully retract into the vessel during times of destress. In various embodiments, the vessel is a landing craft capable of loading and unloading cargo without the burden of an overhang cross beam.

A vessel is provided herein which comprises a primary hull and at least two hull members capable of being deployed from or retracted into tunnels or underneath overhangs in the primary hull. In various embodiments, the vessel comprises a means for controllably deploying and retracting the hull members. These members may further comprise a propulsion means capable of propelling the vessel. In other embodiments the vessel comprises a failsafe mode allowing the hull members to fully retract into the vessel during times of destress. In various embodiments, the vessel is a landing craft capable of loading and unloading cargo without the burden of an overhang cross beam.

The present invention provides, with reference to FIG. 2, an amphibian operable in land and marine modes, the amphibian comprising a hull, at least one discontinuity (wheel bay) provided in the hull, and at least one retractable wheel or track assembly at least partially located in the at least one discontinuity (wheel bay). The hull is a planing hull, and the at least one discontinuity (wheel bay) is provided in the front half of the hull of the amphibian. The amphibian further comprises at least one conduit which opens, or is provided with an entry which opens, into or at the at least one discontinuity (wheel bay) and is configured for channelling, in use, fluid away from the at least one discontinuity (wheel bay).

The present invention provides, with reference to FIG. 2, an amphibian operable in land and marine modes, the amphibian comprising a hull, at least one discontinuity (wheel bay) provided in the hull, and at least one retractable wheel or track assembly at least partially located in the at least one discontinuity (wheel bay). The hull is a planing hull, and the at least one discontinuity (wheel bay) is provided in the front half of the hull of the amphibian. The amphibian further comprises at least one conduit which opens, or is provided with an entry which opens, into or at the at least one discontinuity (wheel bay) and is configured for channelling, in use, fluid away from the at least one discontinuity (wheel bay).

A marine catamaran craft, comprising at least one forward hydrofoil fixed to each of the catamaran hulls and at least one rear hydrofoil in which: At least one forward hydrofoil is arranged for shallowly submerged operation At least one rear hydrofoil is arranged for shallowly submerged operation at low speeds and for planing operation at higher speeds A rear part of each of the catamaran hulls remains wetted at all speeds.

A marine catamaran craft, comprising at least one forward hydrofoil fixed to each of the catamaran hulls and at least one rear hydrofoil in which: At least one forward hydrofoil is arranged for shallowly submerged operation At least one rear hydrofoil is arranged for shallowly submerged operation at low speeds and for planing operation at higher speeds A rear part of each of the catamaran hulls remains wetted at all speeds.

A device including an outboard motor including a jet outlet portion, a stabilizer plate, and a rudder, where the stabilizer plate includes a first end portion and a second end portion, where the first end portion is proximal to the jet outlet portion, where the second end portion is distal to the jet outlet portion, where the rudder extends from the stabilizer plate between the first end portion and the second end portion.

A device including an outboard motor including a jet outlet portion, a stabilizer plate, and a rudder, where the stabilizer plate includes a first end portion and a second end portion, where the first end portion is proximal to the jet outlet portion, where the second end portion is distal to the jet outlet portion, where the rudder extends from the stabilizer plate between the first end portion and the second end portion.

A jet propulsion watercraft includes a vessel body, a steering nozzle, and a bucket. The steering nozzle includes a jet port from which a jet of water is ejected to propel the vessel body. The bucket is configured to move to a retracted position away from the jet of water ejected from the jet port and a jet receiving position to receive the jet of water ejected from the jet port. The bucket includes a right opening, a left opening, a first opening, and a second opening spaced apart from the first opening. The jet of water flows rightward from the right opening, leftward from the left opening, and rearward from the first opening and the second opening when the bucket is located in the jet receiving position. The first opening is located at least partially rightward of a right end of the jet port. The second opening is located at least partially leftward of a left end of the jet port.

The invention relates to a fluid outlet interface for a personal watercraft, so that the latter can collect and divert a very small portion of the fluid pressurized by said vehicle and thus create a sufficient Venturi effect to drive the emptying of the bilge of said vehicle. The invention also relates to a personal watercraft, or more generally any floating device delivering a pressurized fluid, comprising such an interface.