SM UB-52

For other ships with the same name, see German submarine U-52.

History
UB-148 at sea, a U-boat similar to UB-52.
German Empire
Name:	UB-52
Ordered:	20 May 1916^[1]
Builder:	Blohm & Voss, Hamburg
Cost:	3,276,000 German Papiermark
Yard number:	297
Launched:	8 March 1917^[2]
Commissioned:	9 August 1917^[2]
Fate:	sunk 23 May 1918 at 41°36′N 18°52′E / 41.600°N 18.867°E / 41.600; 18.867Coordinates: 41°36′N 18°52′E / 41.600°N 18.867°E / 41.600; 18.867 by HMS H4, all hands lost^[2]
General characteristics ^[2]
Class and type:	German Type UB III submarine
Displacement:	516 t (508 long tons) surfaced 651 t (641 long tons) submerged
Length:	55.30 m (181 ft 5 in) (o/a)
Beam:	5.80 m (19.0 ft)
Draught:	3.68 m (12 ft 1 in)
Propulsion:	2 × propeller shaft 2 × MAN four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
Speed:	13.6 knots (25.2 km/h; 15.7 mph) surfaced 8 knots (15 km/h; 9.2 mph) submerged
Range:	9,040 nmi (16,740 km; 10,400 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:	Pola/Mittelmeer I Flotilla 13 October 1917 – 23 May 1918
Commanders:	Oblt.z.S. Otto Launburg 9 August 1917 – 23 May 1918
Operations:	4 patrols
Victories:	12 merchant ships sunk (41,411 GRT) 5 merchant ships damaged (27,076 GRT)

SM UB-52 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 Pola Flotilla of the German Imperial Navy on 9 August 1917 as SM UB-52.^{[nb 1]}

She operated as part of the Pola Flotilla based in Cattaro. UB-52 was sunk on 23 May 1918 at 41°36′N 18°52′E / 41.600°N 18.867°E / 41.600; 18.867 by HMS H4, all hands lost.^[2]

Construction

Main article: German Type UB III submarine

UB-52 was ordered by the GIN on 20 May 1916. She was built by Blohm & Voss, Hamburg and following just under a year of construction, launched at Hamburg on 8 March 1917. UB-52 was commissioned later that same year under the command of Oblt.z.S. Otto Launburg.

Like all Type UB III submarines, UB-52 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-52 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,040 nautical miles (16,740 km; 10,400 mi). UB-52 had a displacement of 516 t (508 long tons) while surfaced and 651 t (641 long tons) when submerged. Her engines enabled her to travel at 13.6 knots (25.2 km/h; 15.7 mph) when surfaced and 8 knots (15 km/h; 9.2 mph) when submerged.

Summary of raiding history

Date	Name	Nationality	Tonnage (GRT)	Fate^[3]
30 January 1918	Empress Ekaterina II	Russian Empire	5,545	Sunk
1 February 1918	La Dives	France	2,108	Sunk
4 February 1918	Maid of Harlech	United Kingdom	315	Sunk
4 February 1918	Sardinia	United Kingdom	6,580	Damaged
9 February 1918	Antenor	United Kingdom	5,319	Damaged
18 February 1918	Basque	France	3,261	Damaged
20 February 1918	Balgray	United Kingdom	3,603	Sunk
20 February 1918	Zeno	United Kingdom	2,890	Sunk
17 March 1918	Ivydene	United Kingdom	3,541	Sunk
18 March 1918	John H. Barry	United Kingdom	3,083	Sunk
18 March 1918	Saldanha	United Kingdom	4,594	Sunk
4 April 1918	Sincerita	Kingdom of Italy	1,722	Sunk
2 May 1918	Flawyl	United Kingdom	3,592	Sunk
9 May 1918	Atlantique	France	6,479	Damaged
11 May 1918	Suzette Fraissinet	France	2,288	Sunk
12 May 1918	Omrah	United Kingdom	8,130	Sunk
18 May 1918	Media	United Kingdom	5,437	Damaged

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, p.65
1 2 3 4 5 6 Gröner 1991, pp. 25-30.
↑ Helgason, Guðmundur. "Ships hit by UB-52". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 3 December 2014.

Bibliography

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.

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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