German submarine U-2354

German submarine U-2354 was a Type XXIII U-boat of Nazi Germany's Kriegsmarine during World War II. She was ordered on 20 September 1944, and was laid down on 14 October 1944 at Deutsche Werft AG, Hamburg, as yard number 508. She was launched on 10 December 1944 and commissioned under the command of Oberleutnant zur See Hans-Dieter Wex on 11 January 1945.

Design
Like all Type XXIII U-boats, U-2354 had a displacement of 234 t when at the surface and 258 t while submerged. She had a total length of 34.68 m (o/a), a beam width of 3.02 m (o/a), and a draught depth of 3.66 m. The submarine was powered by one MWM six-cylinder RS134S diesel engine providing 575 - 630 PS, one AEG GU4463-8 double-acting electric motor electric motor providing 580 PS, and one BBC silent running CCR188 electric motor providing 35 PS.

The submarine had a maximum surface speed of 9.7 kn and a submerged speed of 12.5 kn. When submerged, the boat could operate at 4 kn for 194 nmi; when surfaced, she could travel 2600 nmi at 8 kn. U-2354 was fitted with two 53.3 cm 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.

Service history
On 9 May 1945, U-2354 surrendered at Kristiansand–Süd, Norway. She was later transferred to Loch Ryan, Scotland, Northern Ireland on 29 May 1945. Of the 156 U-boats that eventually surrendered to the Allied forces at the end of the war, U-2354 was one of 116 selected to take part in Operation Deadlight. U-2354 was towed out and sank on 22 December 1945, by gunfire from the British destroyer HMS Onslow (G17).

The wreck now lies at 56°N, -10.08333°W.