German submarine U-4709 was a Type XXIII U-boat of Nazi Germany's Kriegsmarine during World War II. She was ordered on 7 July 1944, and was laid down on 1 December 1944 at Friedrich Krupp Germaniawerft AG, Kiel, as yard number 951. She was launched on 8 February 1945 and commissioned under the command of Oberleutnant zur See Paul Berkemann on 3 March 1945.[1]
Like all Type XXIII U-boats, U-4709 had a displacement of 234t when at the surface and 258t while submerged. She had a total length of 34.68m (113.78feet) (o/a), a beam width of 3.02m (09.91feet) (o/a), and a draught depth of 3.660NaN0. The submarine was powered by one MWM six-cylinder RS134S diesel engine providing 575-, one AEG GU4463-8 double-acting electric motor electric motor providing 580PS, and one BBC silent running CCR188 electric motor providing 35PS.
The submarine had a maximum surface speed of and a submerged speed of . When submerged, the boat could operate at for ; when surfaced, she could travel at . U-4709 was fitted with two 53.30NaN0 torpedo tubes in the bow. She could carry two preloaded torpedoes. The complement was 14–18 men. This class of U-boat did not carry a deck gun.[1]
On 4 May 1945, U-4709 was scuttled at Germaniawerft, Kiel, as part of Operation Regenbogen. The wreck was later raised and broken up.