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Kriegsmarine - "U-31" - a (184.6') Type 212A Stealth U-boat – Commissioned: 19 October 2005 – Crew: 23-27 Officers and Enlisted – Armament: 6 x 21 Inch (533mm) Asymmetric Torpedo Tubes (4 Left + 2 Right) (13 Torpedo Reloads or 24 Tube Launched Mines) (IDAS Missiles and 24 External Naval Mines) Powered by 1 x V16 396 Diesel and 9 HDW/Siemens PEM Fuel Cells, 30–40KW each – Speed: 20 Knots Submerged and 12 Knots Surface – Depth: 2,296 ft – Still Active