Griffin SysTech is working with SheetTech in Canada to market which is an underwater tethered robot that can search, grapple and retrieve objects from lake, river and ocean floors. It can be used to explore the underwater realm, retrieve items lost overboard from your boat, anchor a boat to underwater mooring or inspect the inside of pipes and other enclosed underwater environments. Future versions can be scaled up to recover heavy objects from the ocean depths and future untethered Autonomous Underwater Vehicle (AUV) versions are on the drawing board.
The Goal: is to enable anyone to explore, find and retrieve objects of up to 300 lbs dry weight from up to 300 feet below the surface.

is 18 inches (46cm) across from thruster to thruster, 27 inches (68.5cm) long with Grapple Claw installed and weighing only 8.4lbs (3.8kg). You can get your with a 150 ft or 300 ft umbilical. All systems come with hand controller and instruction booklet.