UB-148 at sea, a U-boat similar to UB-104.
|Ordered:||6/8 February 1917|
|Builder:||Blohm & Voss, Hamburg|
|Cost:||3,714,000 German Papiermark|
|Launched:||1 September 1917|
|Commissioned:||15 March 1918|
|Fate:||sunk by mine on 19 September 1918|
|General characteristics |
|Class and type:||German Type UB III submarine|
|Length:||55.30 m (181 ft 5 in) (o/a)|
|Beam:||5.80 m (19 ft)|
|Draught:||3.70 m (12 ft 2 in)|
|Test depth:||50 m (160 ft)|
|Complement:||3 officers, 31 men|
|Victories:||11 merchant ships sunk (15,958 GRT)|
SM UB-104 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 15 March 1918 as SM UB-104.[Note 1]
She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 1 September 1917. UB-104 was commissioned later the same year under the command of Oblt.z.S. Ernst Berlin. Like all Type UB III submarines, UB-104 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-104 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,420 nautical miles (13,740 km; 8,540 mi). UB-104 had a displacement of 519 t (511 long tons) while surfaced and 649 t (639 long tons) when submerged. Her engines enabled her to travel at 13.3 knots (24.6 km/h; 15.3 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.
Summary of raiding history
|2 August 1918||Flevo X||Netherlands||111||Sunk|
|2 August 1918||Remke||Netherlands||193||Sunk|
|3 August 1918||Cambrai||France||963||Sunk|
|13 August 1918||Frida||Denmark||395||Sunk|
|13 August 1918||Jönköping 1||Sweden||1,546||Sunk|
|14 August 1918||Wallsend||United Kingdom||2,697||Sunk|
|14 September 1918||Gibel Hamam||United Kingdom||647||Sunk|
|15 September 1918||Kendal Castle||United Kingdom||3,885||Sunk|
|16 September 1918||Ethel||United Kingdom||2,336||Sunk|
|16 September 1918||Lord Stewart||United Kingdom||1,445||Sunk|
|17 September 1918||Ursa||Sweden||1,740||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
- Rössler 1979, p. 66.
- Gröner 1991, pp. 25-30.
- Helgason, Guðmundur. "WWI U-boat commanders: Ernst Berlin". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
- Helgason, Guðmundur. "WWI U-boat commanders: Thomas Bieber (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
- Helgason, Guðmundur. "Ships hit by UB 104". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
- Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.
- Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
- Rössler, Eberhard (1979). U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 – 1945. Die deutschen U-Boote und ihre Werften (in German). I. Munich: Bernard & Graefe. ISBN 3-7637-5213-7.