German submarine U-23
Boat
German submarine U-23 was a Type IIB U-boat of Nazi Germany's Kriegsmarine, built in Germaniawerft, Kiel. She was laid down on 11 April 1936 and commissioned on 24 September. Wikipedia
Builders: Friedrich Krupp Germaniawerft and Galați shipyard
Draft: 12.8′
Launched: August 28, 1936
Beam: 13.39′
Construction started: April 11, 1936
Length: 140′