A motorized watercraft may include an elongated hull extending along a longitudinal central axis (L) and a propulsion system. The propulsion system may include a drive module. The drive module may be mounted to the elongated hull. The drive module may include a motor and a propelling member. The motor may be in driving connection with the propelling member. A bottom surface of the elongated hull may be provided with a first channel and a second channel that respectively extend along the elongated hull on each side of the longitudinal central axis (L).

A motorized watercraft may include an elongated hull extending along a longitudinal central axis (L) and a propulsion system. The propulsion system may include a drive module. The drive module may be mounted to the elongated hull. The drive module may include a motor and a propelling member. The motor may be in driving connection with the propelling member. A bottom surface of the elongated hull may be provided with a first channel and a second channel that respectively extend along the elongated hull on each side of the longitudinal central axis (L).

A modular, weight-shift controlled watercraft device is disclosed which includes: a modular board removably attachable to a power system. The power system includes a modular power supply system, and a modular propulsion system. The power supply system includes a housing including a battery. The propulsion system includes a modular strut, a modular propulsion pod, and a modular hydrofoil. In one embodiment, the power supply system is removably and mechanically attachable directly to the propulsion system.

A modular, weight-shift controlled watercraft device is disclosed which includes: a modular board removably attachable to a power system. The power system includes a modular power supply system, and a modular propulsion system. The power supply system includes a housing including a battery. The propulsion system includes a modular strut, a modular propulsion pod, and a modular hydrofoil. In one embodiment, the power supply system is removably and mechanically attachable directly to the propulsion system.

A personal watercraft is disclosed including a flotation portion, a strut extending from the flotation portion, and a motor pod is disposed along the strut with an electric motor operably coupled to a driveshaft. A hydrojet unit is removably attached to the motor pod and includes an inlet portion removably attached to the motor pod and a substantially cylindrical housing. The inlet portion includes a substantially conical motor interface with a shaft through-hole for receiving the driveshaft therein, one or more fins extending outwardly from the conical motor interface, and at least one ring encircling the conical motor interface and connecting to each of the one or more fins for inhibiting objects from passing through the inlet region. The housing defines a fluid flow path to an outlet portion. The hydrojet unit includes an impeller coupled to the driveshaft and a stator disposed within the housing.

A hydrofoil wing attachment system that comprises a strut or struts and a hydrofoil wing fastening apparatus for various watercraft including, but not limited to, surf boards, kite boards, and stand up paddle boards. In one embodiment the system interfaces with legacy surfboard fin-box systems, thus allowing a user to interchange fins for hydrofoils and transform their watercraft into a hydrofoil watercraft. Other embodiment's of the system allow the implementation of a single-strut/wing combination and also a double-strut/wing combination among other variations. The design of the wing clamping apparatus allows the user to mechanically secure the wing and also configure the angle of attack of the hydrofoil wing. The modular design, configuration options, and high degree of interchangeability of the hydrofoil wing attachment system enables the user to experiment with multiple strut/wing configurations, wing/strut designs, and also the angle of attack.

A hydrofoil wing attachment system that comprises a strut or struts and a hydrofoil wing fastening apparatus for various watercraft including, but not limited to, surf boards, kite boards, and stand up paddle boards. In one embodiment the system interfaces with legacy surfboard fin-box systems, thus allowing a user to interchange fins for hydrofoils and transform their watercraft into a hydrofoil watercraft. Other embodiment's of the system allow the implementation of a single-strut/wing combination and also a double-strut/wing combination among other variations. The design of the wing clamping apparatus allows the user to mechanically secure the wing and also configure the angle of attack of the hydrofoil wing. The modular design, configuration options, and high degree of interchangeability of the hydrofoil wing attachment system enables the user to experiment with multiple strut/wing configurations, wing/strut designs, and also the angle of attack.

The present invention provides an improved locking mechanism for securely connecting modular or detachable components. The locking mechanism includes a male and female portion associated with, respectively, a first and second modular component, the male portion having a slit defining a first and second finger, the locking mechanism having a spreading means provided by a pressure bolt mechanism including a pressure bolt, wherein the pressure bolt is configured to, when turned by up to substantially 1 revolution, move the first and second fingers from a closed position wherein the first and second fingers are substantially parallel to one another, to a spread position wherein the first and second fingers abut an interior surface of the female portion, thereby connecting the first and second modular component.

The present invention provides an improved locking mechanism for securely connecting modular or detachable components. The locking mechanism includes a male and female portion associated with, respectively, a first and second modular component, the male portion having a slit defining a first and second finger, the locking mechanism having a spreading means provided by a pressure bolt mechanism including a pressure bolt, wherein the pressure bolt is configured to, when turned by up to substantially 1 revolution, move the first and second fingers from a closed position wherein the first and second fingers are substantially parallel to one another, to a spread position wherein the first and second fingers abut an interior surface of the female portion, thereby connecting the first and second modular component.

A watercraft (10) including a board (12), a mast (16) extending below the board, (12) the mast (16) carrying a foil (20) and a propeller (30) that is driven by a motor (32), the motor (32) being carried in a tube (18) connected to or extending from the mast (16), wherein a motor controller (34) is also positioned within the tube (18). In this manner, heat generated by the motor controller during use is dissipated into the water through which the watercraft is travelling. The watercraft (10) may also have a receptacle for holding lubricant, the receptacle being located above the motor, wherein the mast has a conduit that provides fluid communication between the receptacle and the lubricant lubricating the motor and/or driveshaft such that lubricant in the receptacle provides a hydrostatic head of pressure to prevent or minimise water ingress around a propeller seal or a driveshaft seal located adjacent a region where the driveshaft exits into the water.