German submarine U-1224 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II. She was constructed by Deutsche Werft of Hamburg, and was commissioned on 20 October 1943, with Kapitänleutnant Georg Preuss in command. She was assigned to the 31st U-boat Flotilla, a submarine training unit.
One of the few known photos of U-1224: Japanese officers on its conning tower at the hand-over ceremony to the Imperial Japanese Navy
The Type IX U-boat was designed by Nazi Germany's Kriegsmarine in 1935 and 1936 as a large ocean-going submarine for sustained operations far from the home support facilities. Type IX boats were briefly used for patrols off the eastern United States in an attempt to disrupt the stream of troops and supplies bound for Europe. It was derived from the Type IA, and appeared in various sub-types.
U-505, a type IXC U-boat
An engine order telegraph dial located in the engine compartment of U-505. "MT" is Maschinen Telegraf, (Telegraph Machine), and "Bb", indicating Backbord, (Port).