SM UB-105

For other ships of the same name, see German submarine U-105.

History
UB-148 at sea, a U-boat similar to UB-105.
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 & 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:	2 × propeller shaft 2 × MAN-Vulcan four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
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:	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) with 10 torpedoes 1 × 8.8 cm (3.46 in) deck gun
Service record
Part of:	Imperial German Navy Mittelmeer I Flotilla 8 May – 11 November 1918
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).

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.^{[nb 1]}

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 (GRT)	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

Notes

↑ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.

References

↑ Rössler 1979, p. 66.
1 2 3 4 5 6 Gröner 1991, pp. 25-30.
↑ Helgason, Guðmundur. "Wilhelm Marschall (Pour le Mérite)". German and Austrian U-Boats of World War I – Kaiserliche Marine – Uboat.net. Retrieved 9 March 2015.
↑ Helgason, Guðmundur. "Rudolf Petersen". German and Austrian U-Boats of World War I – Kaiserliche Marine – Uboat.net. Retrieved 9 March 2015.
↑ 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.
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.

German Type UB III submarines

SM UB-48 SM UB-49 SM UB-50 SM UB-51 SM UB-52 SM UB-53 SM UB-54 SM UB-55 SM UB-56 SM UB-57 SM UB-58 SM UB-59 SM UB-60 SM UB-61 SM UB-62 SM UB-63 SM UB-64 SM UB-65 SM UB-66 SM UB-67 SM UB-68 SM UB-69 SM UB-70 SM UB-71 SM UB-72 SM UB-73 SM UB-74 SM UB-75 SM UB-76 SM UB-77 SM UB-78 SM UB-79 SM UB-80 SM UB-81 SM UB-82 SM UB-83 SM UB-84 SM UB-85 SM UB-86 SM UB-87 SM UB-88 SM UB-89 SM UB-90 SM UB-91 SM UB-92 SM UB-93 SM UB-94 SM UB-95 SM UB-96 SM UB-97 SM UB-98 SM UB-99 SM UB-100 SM UB-101 SM UB-102 SM UB-103 SM UB-104 SM UB-105 SM UB-106 SM UB-107 SM UB-108 SM UB-109 SM UB-110 SM UB-111 SM UB-112 SM UB-113 SM UB-114 SM UB-115 SM UB-116 SM UB-117 SM UB-118 SM UB-119 SM UB-120 SM UB-121 SM UB-122 SM UB-123 SM UB-124 SM UB-125 SM UB-126 SM UB-127 SM UB-128 SM UB-129 SM UB-130 SM UB-131 SM UB-132 SM UB-133 SM UB-136 SM UB-142 SM UB-143 SM UB-144 SM UB-145 SM UB-148 SM UB-149 SM UB-150 SM UB-154 SM UB-155

Preceded by: Type UB II Followed by: Type VII (World War II)

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