German submarine U-546

History
Nazi Germany
Name	U-546
Ordered	5 June 1941
Builder	Deutsche Werft AG, Hamburg-Finkenwerder
Yard number	367
Laid down	6 August 1942
Launched	17 March 1943
Commissioned	3 June 1943
Fate	Sunk on 24 April 1945 by US Navy ships in the north Atlantic
General characteristics
Class and type	Type IXC/40 submarine
Displacement	1,144 t (1,126 long tons) surfaced; 1,257 t (1,237 long tons) submerged;
Length	76.76 m (251 ft 10 in) o/a; 58.75 m (192 ft 9 in) pressure hull;
Beam	6.86 m (22 ft 6 in) o/a; 4.44 m (14 ft 7 in) pressure hull;
Height	9.60 m (31 ft 6 in)
Draught	4.67 m (15 ft 4 in)
Installed power	4,400 PS (3,200 kW; 4,300 bhp) (diesels); 1,000 PS (740 kW; 990 shp) (electric);
Propulsion	2 shafts; 2 × diesel engines; 2 × electric motors;
Speed	18.3 knots (33.9 km/h; 21.1 mph) surfaced; 7.3 knots (13.5 km/h; 8.4 mph) submerged;
Range	13,850 nmi (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph) surfaced; 63 nmi (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	230 m (750 ft)
Complement	4 officers, 44 enlisted
Sensors and ; processing systems	FuMO-61 Hohentwiel U; FuMB-26 Tunis; G.H.G. Atlas Type multi-unit hydrophones;
Armament	6 × torpedo tubes (four bow, two stern); 22 × 53.3 cm (21 in) torpedoes; 1 × 3.7 cm (1.5 in) SK C/30 ; 1 × 2 cm (0.79 in) C/30 anti-aircraft gun;
Service record
Part of:	4th U-boat Flotilla; 2 June – 31 December 1943; 10th U-boat Flotilla; 1 January – 9 November 1944; 33rd U-boat Flotilla; 10 November 1944 – 24 April 1945;
Identification codes:	M 51 791
Commanders:	Kptlt. Paul Just; 2 June 1943 – 24 April 1945;
Operations:	3 patrols:; 1st patrol:; 26 January – 23 April 1944; 2nd patrol:; 15 June – 11 November 1944; 3rd patrol:; 11 March – 24 April 1945;
Victories:	1 warship sunk ; (1,200 tons)

German submarine U-546 was a Type IXC/40 U-boat operated by Nazi Germany's Kriegsmarine during World War II. She was laid down at the Deutsche Werft in Hamburg as yard number 367 on 6 August 1942, launched on 17 March 1943 and commissioned on 2 June 1943 under Oberleutnant zur See Paul Just. The U-boat was a member of three wolfpacks.

U-546 was responsible for the last combat sinking of a United States Navy vessel in the Atlantic Theatre, during Operation Teardrop. On 24 April 1945 U-546 sank the destroyer escort USS Frederick C. Davis, but was in turn sunk by combined fire of five other US destroyers. Her captain and most of her crew were rescued by US vessels, and taken to Argentia Naval Station. It was from this crew that the USN eventually learned that no V-1/2 attacks from the U-boats were planned by the Kriegsmarine.

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