Autonomous underwater vehicles for seabed inspections; Remotely operated vehicles for underwater inspections; Underwater remotely operated vehicles (ROVs) for transport; Underwater scooters; Portable underwater vehicles; Personal portable underwater vehicles for pulling persons through the water, featuring an namely, underwater propulsion system comprised of motor and propellers with a unique jet design; Autonomous underwater vehicles for photography; Structural parts and fittings for the aforementioned motorized locomotion devices; Structural parts and fittings for the aforementioned motorized locomotion devices, namely, Accessories Mount, Handgrip, Twin Engine Handle Bracket, Quick-release Clamp, Finger Safe Guard, Propeller, Wired Thumb Controller, Arm Mount, Leg Mount, Board Bracket, Oxygen Bottle Bracket, Water Cannon Kit, Strap