SM UB-105

SM UB-105 was a German Type UB III submarine or U-boat in the Imperial German Navy during World War I. She was commissioned into the Imperial German Navy on 14 January 1918 as SM UB-105.[Note 1]

For other ships with the same name, see German submarine U-105.
UB-148 at sea, a U-boat similar to UB-105.
History
German Empire
Name: UB-105
Ordered: 6/8 February 1917[1]
Builder: Blohm & Voss, Hamburg
Cost: 3,714,000 German Papiermark
Yard number: 311
Launched: 7 July 1917[2]
Commissioned: 14 January 1918[2]
Fate: surrendered 16 January 1919, broken up in Felixtowe in 1922.[2]
General characteristics [2]
Class and type: German Type UB III submarine
Displacement:
  • 510 t (500 long tons) surfaced
  • 629 t (619 long tons) submerged
Length: 55.30 m (181 ft 5 in) (o/a)
Beam: 5.80 m (19 ft)
Draught: 3.70 m (12 ft 2 in)
Propulsion:
Speed:
  • 13.3 knots (24.6 km/h; 15.3 mph) surfaced
  • 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range:
  • 7,420 nmi (13,740 km; 8,540 mi) at 6 knots (11 km/h; 6.9 mph) surfaced
  • 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth: 50 m (160 ft)
Complement: 3 officers, 31 men[2]
Armament:
Service record
Part of:
Commanders:
  • Kptlt. Wilhelm Marschall[3]
  • 14 January – 9 September 1918
  • Oblt.z.S. Rudolf Petersen[4]
  • 10 September – 30 November 1918
Operations: 5 patrols
Victories:
  • 25 merchant ships sunk (64,764 GRT)
  • 1 warship sunk (1,290 tons).

UB-105 was surrendered to Britain on 16 January 1919 and broken up in Felixstowe in 1922.[2]

Construction
Main article: German Type UB III submarine

She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 7 July 1917. UB-105 was commissioned early the next year under the command of Kptlt. Wilhelm Marschall. Like all Type UB III submarines, UB-105 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-105 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-105 had a displacement of 510 t (500 long tons) while surfaced and 629 t (619 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
UB-105 sank Ellerman Lines' 4,262 GRT cargo steamship Branksome Hall off the coast of Cyrenaica in July 1918. She is shown here between 1906 and 1911, when she was with Glen Line as Glenavon.
Date Name Nationality Tonnage[Note 2] Fate[5]
23 April 1918 Restaurado  Portugal 136 Sunk
24 April 1918 Leonor  Portugal 166 Sunk
25 April 1918 HMS Cowslip  Royal Navy 1,290 Sunk
29 April 1918 City of Pensacola  United States 705 Sunk
29 April 1918 Kut Sang  United Kingdom 4,895 Sunk
30 April 1918 Conway  United Kingdom 4,003 Sunk
3 June 1918 Nora  United Kingdom 3,933 Sunk
5 June 1918 Snaefell  United Kingdom 1,368 Sunk
6 June 1918 Archbank  United Kingdom 3,767 Sunk
6 June 1918 Menzaleh  United Kingdom 1,859 Sunk
9 June 1918 Clan Forbes  United Kingdom 3,946 Sunk
9 June 1918 Pundit  United Kingdom 5,917 Sunk
9 June 1918 Tewfikieh  United Kingdom 2,490 Sunk
14 July 1918 Branksome Hall  United Kingdom 4,262 Sunk
14 July 1918 Waitemata  United Kingdom 5,432 Sunk
14 July 1918 Djemnah  France 3,716 Sunk
19 July 1918 Eguskia  Spain 1,181 Sunk
18 September 1918 Antonietta  Kingdom of Italy 93 Sunk
20 September 1918 Angelina Pasquale  Kingdom of Italy 29 Sunk
20 September 1918 San Michele  Kingdom of Italy 24 Sunk
21 September 1918 Santo Fortunato  Kingdom of Italy 24 Sunk
3 October 1918 Ariel  United Kingdom 3,428 Sunk
3 October 1918 Saint Luc  France 2,456 Sunk
7 October 1918 Madeira  Portugal 4,792 Sunk
7 October 1918 Saint Barnabe  France 5,184 Sunk
12 October 1918 Tripoli II  Kingdom of Italy 958 Sunk
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References

Notes
  1. "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
  2. Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations
  1. Rössler 1979, p. 66.
  2. Gröner 1991, pp. 25-30.
  3. Helgason, Guðmundur. "WWI U-boat commanders: Wilhelm Marschall (Pour le Mérite)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
  4. Helgason, Guðmundur. "WWI U-boat commanders: Rudolf Petersen". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
  5. Helgason, Guðmundur. "Ships hit by UB 105". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 December 2014.

Bibliography
  • 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.
  • 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.CS1 maint: ref=harv (link)
  • 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.CS1 maint: ref=harv (link)

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