Versuch Schnellboot VS.5
Shown here is a pic of the semi-submersible Versuch Schnellboot (Experimental torpedo Boat) VS.5 undergoing her sea trials. This craft was to have been armed with two 53 cm (21 in) torpedoes tubes, and two 2 cm (0.79 in) guns. Its fate after 1941 is unknown. The pic was taken from the web.