SM U-154

NameU-154

Ordered29 November 1916

BuilderFlensburger Schiffbau-Gesellschaft, Flensburg

Yard number381

History
German Empire
Name	U-154
Ordered	29 November 1916
Builder	Flensburger Schiffbau-Gesellschaft, Flensburg
Yard number	381
Launched	10 September 1917
Commissioned	12 December 1917
Fate	Sunk 11 May 1918
General characteristics [1]
Class & type	Type U 151 submarine
Displacement	1,512 tonnes (1,488 long tons) (surfaced) 1,875 tonnes (1,845 long tons) (submerged) 2,272 tonnes (2,236 long tons) (total)
Length	65.00 m (213 ft 3 in) (o/a) 57.00 m (187 ft) (pressure hull)
Beam	8.90 m (29 ft 2 in) (o/a) 5.80 m (19 ft) (pressure hull)
Height	9.25 m (30 ft 4 in)
Draught	5.30 m (17 ft 5 in)
Installed power	800 PS (590 kW; 790 bhp) (surfaced) 800 PS (590 kW; 790 bhp) (submerged)
Propulsion	2 × shafts, 2 × 1.60 m (5 ft 3 in) propellers
Speed	12.4 knots (23.0 km/h; 14.3 mph) surfaced 5.2 knots (9.6 km/h; 6.0 mph) submerged
Range	25,000 nmi (46,000 km; 29,000 mi) at 5.5 knots (10.2 km/h; 6.3 mph) surfaced, 65 nmi (120 km; 75 mi) at 3 knots (5.6 km/h; 3.5 mph) submerged
Test depth	50 metres (160 ft)
Complement	6 officers, 50 enlisted
Armament	2 50 cm (20 in) bow torpedo tubes 18 torpedoes 2 × 15 cm (5.9 in) SK L/45 deck guns with 1672 rounds 2 × 8.8 cm (3.5 in) SK L/30 deck guns with 764 rounds
Service record
Part of	U-Kreuzer Flotilla Unknown start - 11 May 1918
Commanders	KrvKpt. Hermann Gercke 12 December 1917 - 11 May 1918
Operations	1 patrol
Victories	5 merchant ships sunk (8,132 GRT) 4 merchant ships damaged (18,220 GRT)

SM U-154 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-154 was engaged in the naval warfare and took part in the First Battle of the Atlantic.^[2]

On 11 May 1918, U-154 was torpedoed and sunk in the Atlantic Ocean at 36°51′N 11°50′W / 36.850°N 11.833°W / 36.850; -11.833 by the Royal Navy submarine HMS E35 with the loss of all 77 of her crew.