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 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 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 stand-up paddle with a shaft (3) arranged between a paddle blade (1) and a handle (2) is described. In order to design the stand-up paddle in such a way that paddle strokes on stand-up paddle boards can be performed, in particular by inexperienced users, without the risk of loss of balance, it is suggested that the handle part (2) is attached to the end of the shaft (3) opposite the paddle blade (1) by means of a tension-resistant, flexible connecting element (4).

A stand-up paddle with a shaft (3) arranged between a paddle blade (1) and a handle (2) is described. In order to design the stand-up paddle in such a way that paddle strokes on stand-up paddle boards can be performed, in particular by inexperienced users, without the risk of loss of balance, it is suggested that the handle part (2) is attached to the end of the shaft (3) opposite the paddle blade (1) by means of a tension-resistant, flexible connecting element (4).

A Method and Apparatus for Motorized Sit Down Hydrofoil have been disclosed. By using a seat with a seatbelt and bindings to secure a rider to a top of a board having a hydrofoil assembly on the bottom of the board a rider can be protected from drowning due to an overturned board.

A towable personal flotation device (PFD) is provided that includes a rudder attached to the device so as to extend into the water when the PFD is towed through water. The rudder is positioned, relative to the direction of travel, such that water flowing across the rudder imparts a lateral force to the rudder, causing the PFD to follow a parallel course. Methods are also provided, for delivering the personal flotation device to a person in or across the water.

A towable personal flotation device (PFD) is provided that includes a rudder attached to the device so as to extend into the water when the PFD is towed through water. The rudder is positioned, relative to the direction of travel, such that water flowing across the rudder imparts a lateral force to the rudder, causing the PFD to follow a parallel course. Methods are also provided, for delivering the personal flotation device to a person in or across the water.

There is provided a wing sail comprising a first inflatable strut (10) extending in a width direction (Wd), a second inflatable strut (20) extending in a length direction (Ln) from the first inflatable strut, at least one handle (25, 26) mounted on the second inflatable strut, and first and second sail sheets (30, 35) that are spaced apart from one another in a height direction (He). The first inflatable strut (10) defines a leading edge (12) of the wing sail. The first and second sail sheets (30, 35) each comprise a front edge (35F) and a rear edge (35R) that are opposite to one another, wherein the front edges both connect to the first inflatable strut, and wherein the first and second sail sheets both extend rearwardly away from the first inflatable strut towards a trailing edge (40) of the wing sail.