SM U-154

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
Class and 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.

Summary of raiding history

Date	Name	Nationality	Tonnage^{[Note 1]}	Fate^[3]
12 March 1918	Nordkyn	Norway	3,244	Sunk
17 March 1918	Guadalquivir	Spain	2,078	Sunk
21 March 1918	Chincha	United States	6,371	Damaged
26 March 1918	Beira Alta	Portugal	101	Sunk
7 April 1918	La Bruyere	France	2,198	Damaged
9 April 1918	President Howard	Liberia	73	Sunk
10 April 1918	Burutu	United Kingdom	3,902	Damaged
21 April 1918	Michelet	France	2,636	Sunk
25 April 1918	Kawachi Maru	Empire of Japan	5,749	Damaged

^ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

^ Gröner 1991, pp. 20–21.
^ Helgason, Guðmundur. "WWI U-boats: U 154". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 January 2010.
^ Helgason, Guðmundur. "Ships hit by U 154". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 5 June 2018.

Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
Jung, Dieter (2004). Die Schiffe der Kaiserlichen Marine 1914-1918 und ihr Verbleib [German Imperial Navy ships 1914-1918 and their fate] (in German). Bonn: Bernard & Graefe. ISBN 3-7637-6247-7.

v t e German Type U 151 submarines
U-151 U-152 U-153 U-154 U-155 U-156 U-157
Preceded by: Type U 142 Followed by: Type UA
List of U-boats of Germany

v t e Shipwrecks and maritime incidents in May 1918
Shipwrecks	2 May: UB-31, Unity 5 May: Kyarra, UB-119 8 May: U-32 9 May: UC-78 10 May: UB-16, HMS Vindictive 11 May: Sant Anna, U-154, Verona 12 May: U-103, UB-72 13 May: UB-114, Zaanland 14 May: HMS Phoenix 17 May: U-35 18 May: Catapulte, Warrimoo, HMS Chesterfield 21 May: Rosalind 22 May: USS Wakiva II 23 May: Innisfallen, HMS Moldavia, UB-52 26 May: UB-74 31 May: HMS Fairy, USS President Lincoln, UC-75 Unknown date: UB-70
Other incidents	1 May: Prince Rupert 13 May: USS Hisko, USS Mexican, Nidd 22 May: USS Wabash 29 May: RMS Magdalena
1917 1918 1919 April 1918 June 1918