A subsurface diver transport vehicle includes a vehicle body and at least one propulsion device. The vehicle body incorporates a number of individual mission modules mechanically assembled together to define a substantially continuous hull and deck of the vehicle. The mission modules include at least one battery module adapted for supplying electrical current to electrical subsystems of the vehicle. The propulsion device is attached to the vehicle body and capable of propelling the vehicle through a body of water.

A subsurface diver transport vehicle includes a vehicle body and at least one propulsion device. The vehicle body incorporates a number of individual mission modules mechanically assembled together to define a substantially continuous hull and deck of the vehicle. The mission modules include at least one battery module adapted for supplying electrical current to electrical subsystems of the vehicle. The propulsion device is attached to the vehicle body and capable of propelling the vehicle through a body of water.

The invention relates to a water board (2) made of a material that can float on water, having a support area (8), on which a user rests at least partially. To reduce the current forces acting on the user while holding on to and being towed behind a motorized watercraft (24), it is proposed that the water board (2) has, at a front-end area, an attachment segment (22) for the articulation of the water board (2) to the watercraft (24).

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

The invention relates to a swimming and diving aid, having a hull which comprises a flow channel or with which a flow channel is associated, a motor-driven water acceleration arrangement, in particular a propeller, being associated with the flow channel; having a support surface for an upper body on an upper side of the hull; having grips mounted on the swimming and diving aid, control elements for controlling the water acceleration arrangement by means of an associated motor controller being provided on the grips; and having a display, facing toward the support surface, for showing operating parameters of the swimming and diving aid. Provision can be made in this context that a forward-directed front camera is integrated into the hull in front of the support surface in a direction of travel, and is connected to an electronic control system; that the electronic control system is embodied to apply control to the front camera and to receive camera signals; and that a switching element for starting and ending a video capture is arranged on at least one grip. The invention makes possible the acquisition of video captures in the travel direction of the swimming and diving aid.

The invention relates to a swimming and diving aid, having a hull which comprises a flow channel or with which a flow channel is associated, a motor-driven water acceleration arrangement, in particular a propeller, being associated with the flow channel; having a support surface for an upper body on an upper side of the hull; having grips mounted on the swimming and diving aid, control elements for controlling the water acceleration arrangement by means of an associated motor controller being provided on the grips; and having a display, facing toward the support surface, for showing operating parameters of the swimming and diving aid. Provision can be made in this context that a forward-directed front camera is integrated into the hull in front of the support surface in a direction of travel, and is connected to an electronic control system; that the electronic control system is embodied to apply control to the front camera and to receive camera signals; and that a switching element for starting and ending a video capture is arranged on at least one grip. The invention makes possible the acquisition of video captures in the travel direction of the swimming and diving aid.

The invention relates to a watercraft, in particular a swimming and/or diving aid with a hull (10) having a stern (12) and a bow (11), wherein two flow channels (27) are provided in the hull (10) or on the hull (10), which flow channels extend from a water inlet (22) to a water outlet (24), wherein a water acceleration device (52), in particular a propeller or a propelling screw, is arranged in each of the two flow channels (27), wherein each water acceleration device (52) is driven by a motor (50), wherein handles (31) a user can hold on to are arranged in the midship area between the bow (11) and the stern (12) or in the bow area, wherein a support surface (40) is provided adjoining the handles (31) in the direction of the stern (12), on which support surface the user can at least partially rest, and wherein two spaced-apart bulges extending in the longitudinal direction of the hull (10) are provided on the underside of the hull (10), between which bulges at least one water-sliding surface (14, 15) is arranged. To be able to implement a low flow resistance with a compact structure in such a watercraft, provision is made according to the invention that the flow channels (27) extend at least sectionally in the area of the bulges.

An underwater swimming aid includes a power device and a camera instrument fixing device, and the power device includes a propeller for providing power to drive the underwater swimming aid to advance and a connecting plate fixed to the propeller; and the camera instrument fixing device includes a mounting bracket and a fixing bracket, the mounting bracket is fixed to the connecting plate and is fixedly connected to the fixing bracket, and the fixing bracket is used for fixing a camera instrument. According to the underwater swimming aid, the camera instrument fixing device is fixed to an existing underwater swimming aid, and the camera instrument is mounted on the camera instrument fixing device, so that users can photograph underwater scenes while enjoying funs brought by the swimming aid.

An underwater swimming aid includes a power device and a camera instrument fixing device, and the power device includes a propeller for providing power to drive the underwater swimming aid to advance and a connecting plate fixed to the propeller; and the camera instrument fixing device includes a mounting bracket and a fixing bracket, the mounting bracket is fixed to the connecting plate and is fixedly connected to the fixing bracket, and the fixing bracket is used for fixing a camera instrument. According to the underwater swimming aid, the camera instrument fixing device is fixed to an existing underwater swimming aid, and the camera instrument is mounted on the camera instrument fixing device, so that users can photograph underwater scenes while enjoying funs brought by the swimming aid.