A personal watercraft comprises a body including a hull and a deck; a joining section including a horizontal portion protruding horizontally from the body, and a vertical portion protruding downward from an outer end portion of the horizontal portion, the joining section joining the hull to the deck; and a stabilizer mounted to the joining section. The joining section includes right and left joining sections, and a stern joining section. The stabilizer is mounted to a rear portion of at least one of the right and left joining sections. The stabilizer has an inclined bottom surface which is located below a bottom surface of the horizontal portion and extends in a forward and rearward direction such that the inclined bottom surface is inclined in a downward direction as the inclined bottom surface extends in a rearward direction.

A personal watercraft comprises a body including a hull and a deck; a joining section including a horizontal portion protruding horizontally from the body, and a vertical portion protruding downward from an outer end portion of the horizontal portion, the joining section joining the hull to the deck; and a stabilizer mounted to the joining section. The joining section includes right and left joining sections, and a stern joining section. The stabilizer is mounted to a rear portion of at least one of the right and left joining sections. The stabilizer has an inclined bottom surface which is located below a bottom surface of the horizontal portion and extends in a forward and rearward direction such that the inclined bottom surface is inclined in a downward direction as the inclined bottom surface extends in a rearward direction.

Pontoon structure for a boat includes an elongated pontoon with a bottom forming a water entrapment channel between a front end portion and a rear end portion of the pontoon, the bottom configuration causing the pontoon and the supported boat body to quickly rise above the water surface and plane.

The invention relates to a catamaran hull system to improve performance characteristics. The catamaran hull system comprises a hull having a bow and a stern, at least one transverse step, and a posi-flow inductor system. The posi-flow inductor system includes an interior inductor channel extending vertically up the hull and terminating above a waterline when the hull is at rest, and a posi-flow cover plate attached to the hull and covering the interior inductor channel to form a posi-flow duct. This catamaran hull system provides a solution that reduces suction, improves air flow to the transverse step, and enhances overall hull efficiency. Overall, it offers improved performance, stability, and handling characteristics for catamaran vessels.

The invention relates to a catamaran hull to improve performance characteristics. The catamaran hull comprises a staggered keel and varying deadrise angles to reduce hunting phenomena and improve sea-keeping, handling, and turning abilities of the catamaran. The hull includes a forward keel centered on each sponson, a mid keel moved inward relative to the forward keel, and an aft keel moved inward relative to the mid keel. This catamaran hull provides a solution that reduces undesirable phenomena such as hunting and outward leaning during turns, while improving stability and maneuverability. Overall, it offers enhanced performance in various water conditions through its unique staggered keel configuration and optimized hull geometry.

The invention relates to a system and apparatus to improve performance characteristics of catamaran hulls. A catamaran hull comprises two sponsons, each sponson having an inner chine, and at least one chine extension attached to the inner chine of at least one sponson. The chine extension extends into a tunnel between the two sponsons and is angled downward from a horizontal plane. This system and apparatus provide a solution that generates lift by increasing the surface area of the chine and allows the catamaran to lean into turns rather than outward. Overall, it offers improved stability, reduced drag, and enhanced maneuverability for catamaran boats, particularly at higher speeds and during turning maneuvers.

The instant disclosure pertains to a pontoon boat having various embodiments of an enclosure. Non-limiting exemplary embodiments of the enclosure are configured for habitation.

A watercraft has a hull which, in the area of the deck has a support on which parts of the upper body of a user can rest and where the user can hold on to handles. A flow channel is defined on the hull and a propelling screw is disposed in the flow channel. The flow channel has an intake port and downstream of the propelling screw a jet outlet in the stern area. A support body is disposed on the stern area in such a way that the support body extends the support by means of its support surface. In such a watercraft, a considerable increase in traveling speed can be achieved if provision is made for at least one sliding surface to be provided on the underside of the support body and for the support body to be rigidly connected to the hull.

Described is a multi-use offshore structure having a first configuration and a second configuration. The first configuration includes a pontoon base disposed at a lower end of the multi-use offshore structure. A deck is disposed at an upper end of the multi-use offshore structure, and hull column structures extend between the pontoon base and the deck. The second configuration includes the pontoon base, the deck, and the hull column structures of the first configuration. A set of sponsons is formed to be installed on the hull column structures, and a deck expansion unit is connectable with the deck.

A watercraft has left and right sponsons movable between raised and lowered positions. For each sponson, an actuatable anchor connects the sponson to a hull of the watercraft; and a guiding slot guides movement of the sponson. The actuatable anchor is received in the guiding slot. The sponson is in the raised position when the actuatable anchor is at a first location of the guiding slot, and in the lowered position when the actuatable anchor is at a second location of the guiding slot. The guiding slot has recessed portions at the first and second locations that are shaped and sized to prevent the actuatable anchor from moving relative to the guiding slot when a handle of the actuatable anchor is received therein and is in the locked position. The actuatable anchor is movable from the first and second locations when the handle is in the unlocked position.