UB-148 at sea, a U-boat similar to UB-55.
|Ordered:||20 May 1916|
|Builder:||AG Weser, Bremen|
|Cost:||3,276,000 German Papiermark|
|Launched:||9 May 1917|
|Commissioned:||1 July 1917|
|Fate:||sunk 22 April 1918 at Coordinates: by mines, 30 dead|
|General characteristics |
|Class and type:||German Type UB III submarine|
|Length:||55.85 m (183 ft 3 in) (o/a)|
|Beam:||5.80 m (19 ft)|
|Draught:||3.72 m (12 ft 2 in)|
|Test depth:||50 m (160 ft)|
|Complement:||3 officers, 31 men|
SM UB-55 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 Flanders Flotilla of the German Imperial Navy on 1 July 1917 as SM UB-55.[Note 1]
She was built by AG Weser, Bremen and following just under a year of construction, launched at Bremen on 9 May 1917. UB-55 was commissioned later that same year under the command of Kptlt. Ralph Wenninger. Like all Type UB III submarines, UB-55 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-55 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,020 nautical miles (16,710 km; 10,380 mi). UB-55 had a displacement of 516 t (508 long tons) while surfaced and 646 t (636 long tons; 712 short tons) when submerged. Her engines enabled her to travel at 13.4 knots (24.8 km/h; 15.4 mph) when surfaced and 7.8 knots (14.4 km/h; 9.0 mph) when submerged.
Summary of raiding history
|5 November 1917||Clan Cumming||United Kingdom||4,808||Damaged|
|7 December 1917||Proba||United Kingdom||105||Sunk|
|8 December 1917||Corinto||Norway||999||Sunk|
|11 December 1917||Argus||Portugal||100||Sunk|
|11 December 1917||Ligeiro||Portugal||25||Sunk|
|11 December 1917||A Portuguesa||Portugal||107||Sunk|
|11 December 1917||Vigneira||Portugal||25||Sunk|
|16 December 1917||Foylemore||United Kingdom||3,831||Sunk|
|25 January 1918||Eastlands||United Kingdom||3,113||Sunk|
|26 January 1918||Manhattan||United Kingdom||8,001||Damaged|
|29 January 1918||Addax||United Kingdom||40||Sunk|
|29 January 1918||General Leman||United Kingdom||57||Sunk|
|29 January 1918||Ibex||United Kingdom||42||Sunk|
|29 January 1918||Perriton||United Kingdom||90||Sunk|
|29 January 1918||Perseverance||United Kingdom||51||Sunk|
|30 January 1918||Wellholme||United Kingdom||113||Sunk|
|14 March 1918||A. A. Raven||United States||2,459||Sunk|
|21 March 1918||Begonia||United Kingdom||3,070||Sunk|
|23 March 1918||Chattahoochee||United States||8,007||Sunk|
|23 March 1918||Madame Midas||United Kingdom||1,203||Sunk|
|23 March 1918||Mar Baltico||Spain||2,023||Sunk|
|23 March 1918||Venborg||Norway||1,065||Sunk|
|24 March 1918||Fileur||France||73||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
- 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.