1) Fishing equipment 2) Mine-sweeping apparatus 3) Minesweeping device 1) Otter 
[water kite] The paravane is a towed winged (hydrofoiled) underwater object—water kite. Paravanes have been used in sport or commercial fishing, marine exploration and industry, sports and military. The wings of paravanes are sometimes in a fixed position, else positioned remotely or by actions of a human pilot. Pioneer parafoil developer...
device used to cut underwater cables
Anti-mine device, used by the British in World War I for minesweeping. It was towed from the bows of a ship and was so designed that at a preset depth it would pull the towing...