PROFILPELAJAR.COM

History
German Empire
Name	U-104
Ordered	15 September 1915
Builder	AG Weser, Bremen
Yard number	255
Laid down	4 August 1916
Launched	3 July 1917
Commissioned	12 August 1917
Fate	Depth-charged and sunk 25 April 1918. 41 dead, 1 survivor.
General characteristics
Class and type	German Type U 57 submarine
Displacement	750 t (740 long tons) surfaced; 952 t (937 long tons) submerged;
Length	67.60 m (221 ft 9 in) (o/a); 54.02 m (177 ft 3 in) (pressure hull);
Beam	6.32 m (20 ft 9 in) (o/a); 4.05 m (13 ft 3 in) (pressure hull);
Height	8.25 m (27 ft 1 in)
Draught	3.65 m (12 ft)
Installed power	2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced; 2 × 1,200 PS (883 kW; 1,184 shp) submerged;
Propulsion	2 shafts, 2 × 1.65 m (5 ft 5 in) propellers
Speed	16.5 knots (30.6 km/h; 19.0 mph) surfaced; 8.8 knots (16.3 km/h; 10.1 mph) submerged;
Range	10,100 nmi (18,700 km; 11,600 mi) at 8 knots (15 km/h; 9.2 mph) surfaced; 56 nmi (104 km; 64 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged;
Test depth	50 m (164 ft 1 in)
Complement	4 officers, 32 enlisted
Armament	4 × 50 cm (19.7 in) torpedo tubes (two bow, two stern); 10–12 torpedoes; 2 × 8.8 cm (3.5 in) SK L/30 deck gun;
Service record
Part of:	II Flotilla; 1 October 1917 – 25 April 1918;
Commanders:	Kptlt. Kurt Bernis; 1 October 1917 – 25 April 1918;
Operations:	4 patrols
Victories:	9 merchant ships sunk ; (14,721 GRT)

SM U-104^{[Note 1]} was a German Type U 57 U-boat during the First World War. U-104 was built at AG Weser in Bremen, launched on 3 July 1917 and commissioned on 12 August 1917. She completed four patrols under Kptlt. Kurt Bernis and was responsible for the sinking of nine vessels of a total of 14,721 gross register tons (GRT).^[3]

Loss

On 25 April 1918 the U-104 was engaged by USS Cushing in St. George's Channel and severely damaged. Later the same day HMS Jessamine came upon her and dropped further depth-charges, sinking her and leaving but a single survivor of her 42-member crew. The wreckage lies at position 51°59′N 6°26′W / 51.983°N 6.433°W / 51.983; -6.433.

Date	Name	Nationality	Tonnage^{[Note 2]}	Fate^[4]
26 October 1917	Sapele	United Kingdom	4,366	Sunk
15 December 1917	Maidag	Norway	1,253	Sunk
21 December 1917	Spro	Norway	1,507	Sunk
25 December 1917	Ajax	Denmark	1,018	Sunk
2 March 1918	Kenmare	United Kingdom	1,330	Sunk
12 April 1918	Njaal	Russian Empire	578	Sunk
16 April 1918	Widwud	Russian Empire	299	Sunk
20 April 1918	Lowther Range	United Kingdom	3,926	Sunk
22 April 1918	Fern	United Kingdom	444	Sunk

^ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
^ Tonnages are in gross register tons

^ Gröner 1991, pp. 12–14.
^ Helgason, Guðmundur. "WWI U-boat commanders: Kurt Bernis". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 January 2015.
^ Helgason, Guðmundur. "WWI U-boats: U 104". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2010.
^ Helgason, Guðmundur. "Ships hit by U 104". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 January 2015.

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.