This invention discloses a frogman
underwater propulsion vehicle and its
assembly method, comprising a main body shell, an adjustment
assembly, and a transport compartment. A fairing and a
propeller hub are installed at the
tail of the main body shell, with
propeller blades evenly distributed circumferentially around the hub. The adjustment
assembly includes a sliding guide rail, a limiting rod, a pulling rod, a sliding block, a connecting block, a rotating shaft, a suspension block, and a limiting hole. The sliding guide rail includes two sliding grooves at the top and bottom of the adjustment assembly. The transport compartment includes a water pump adjustment compartment, a
ballast compartment, a cargo compartment, and a frame. This invention adjusts the center of gravity of the transport device through the adjustment assembly, increasing the stability of the
underwater propulsion vehicle during navigation. By setting up the
ballast compartment to
ballast and de-ballast the transport device, the frogman
underwater propulsion vehicle maintains
neutral buoyancy at all times, thereby achieving higher
propeller efficiency.