German submarine U-4706

German submarine U-4706 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 14 November 1944 at Friedrich Krupp Germaniawerft AG, Kiel, as yard number 948. She was launched on 19 January 1945 and commissioned under the command of Oberleutnant zur See Manfred Schneider on 7 February 1945.

Design
Like all Type XXIII U-boats, U-4706 had a displacement of 232 t when at the surface and 256 t while submerged. She had a total length of 34.14 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 PS, one AEG GU4463-8 double-acting electric motor electric motor providing 572 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 202 nmi; when surfaced, she could travel 2600 nmi at 8 kn. U-4706 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 3 May 1945, U-4706 surrendered at Kristiansand, Norway.

Post was service
In October 1948, U-4706 was transferred to Norway becoming the Royal Norwegian Navy HNoMS Knerter. From 14 April 1950, the Royal Norwegian Yacht Club used her for storage until she was struck in 1954 and broken up.