Coordinates: 52°47′N 2°24′E / 52.783°N 2.400°E / 52.783; 2.400

SM UB-27

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For other ships with the same name, see German submarine U-27.
SM UB-45, a U-boat similar to UB-27
History
German Empire
NameUB-27
Ordered30 April 1915[1]
BuilderAG Weser, Bremen[1]
Cost1,291,000 German Papiermark
Yard number241[1]
Laid down8 July 1915
Launched10 February 1916[1]
Commissioned23 February 1916
FateSunk on 29 July 1917
General characteristics [2]
Class & typeType UB II submarine
Displacement
  • 265 t (261 long tons) surfaced
  • 291 t (286 long tons) submerged
Length
Beam
  • 4.36 m (14 ft 4 in) o/a
  • 3.85 m (13 ft) pressure hull
Draught3.66 m (12 ft)
Propulsion
Speed
  • 8.9 knots (16.5 km/h; 10.2 mph) surfaced
  • 5.72 knots (10.59 km/h; 6.58 mph) submerged
Range
  • 7,200 nmi (13,300 km; 8,300 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced
  • 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth50 m (160 ft)
Complement2 officers, 21 men
Armament
Notes30-second diving time
Service record
Part of
  • I Flotilla
  • 14 April 1916 - 1 February 1917
  • II Flotilla
  • 1 February - 21 April 1917
  • Baltic Flotilla
  • 21 April - 19 July 1917
  • Flandern Flotilla
  • 19 – 29 July 1917
Commanders
  • Kptlt. Victor Dieckmann[3]
  • 23 February – 31 October 1916
  • Oblt.z.S. Hans Georg Lübbe[4]
  • 1 November 1916 – 23 April 1917
  • Oblt.z.S. Freiherr Heinz von Stein zu Lausnitz[5]
  • 24 April – 29 July 1917
Operations17 patrols
Victories
  • 10 merchant ships sunk
    (16,094 GRT)
  • 1 auxiliary warship sunk
    (1,997 GRT)
  • 3 merchant ships damaged
    (3,240 GRT)
  • 1 merchant ship taken as prize
    (1,019 GRT)

SM UB-27 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 10 February 1916. She was commissioned into the German Imperial Navy on 23 February 1916 as SM UB-27.[Note 1] UB-27 sank 11 ships in 17 patrols for a total of 18,091 gross register tons (GRT).[6]

Design

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A Type UB II submarine, UB-27 had a displacement of 265 tonnes (261 long tons) when at the surface and 291 tonnes (286 long tons) while submerged. She had a total length of 36.13 m (118 ft 6 in), a beam of 4.36 m (14 ft 4 in), and a draught of 3.66 m (12 ft 0 in). The submarine was powered by two Benz six-cylinder diesel engines producing a total 270 metric horsepower (270 shp; 200 kW), two Siemens-Schuckert electric motors producing 280 metric horsepower (210 kW; 280 shp), and one propeller shaft. She was capable of operating at depths of up to 50 metres (160 ft).[2]

The submarine had a maximum surface speed of 8.90 knots (16.48 km/h; 10.24 mph) and a maximum submerged speed of 5.72 knots (10.59 km/h; 6.58 mph). When submerged, she could operate for 45 nautical miles (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 7,200 nautical miles (13,300 km; 8,300 mi) at 5 knots (9.3 km/h; 5.8 mph). UB-26 was fitted with two 50 centimetres (20 in) torpedo tubes, four torpedoes, and one 5 cm (2.0 in) SK L/40 deck gun. She had a complement of twenty-one crew members and two officers and a thirty-second dive time.[2]

Service history

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On 29 April 1916 in the North Sea about 15 nautical miles (28 km; 17 mi) south-east of Souter Point near Whitburn, County Durham, UB-27 opened with her deck gun fire at SS Wandle, an 889 GRT "flat-iron" collier of the Wandsworth, Wimbledon and Epsom District Gas Company.[7] The collier engaged the submarine and survived.[7] Afterwards in Britain it was believed Wandle had sunk UB-27 and the master, G.E.A. Mastin, and his crew were celebrated.[8][9]

UB-27 disappeared after 22 July 1917. HMS Halcyon reported ramming and depth charging a U-boat on 29 July 1917. A postwar German study concluded that it was possible that Halcyon sank UB-27 at Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value)..

Summary of raiding history

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Date Name Nationality Tonnage[Note 2] Fate[10]
28 April 1916 Blessing File:Civil Ensign of the United Kingdom.svg United Kingdom 19 Sunk
28 April 1916 Christian File:Flag of Denmark.svg Denmark 227 Damaged
29 April 1916 Teal File:Civil Ensign of the United Kingdom.svg United Kingdom 766 Sunk
29 April 1916 Wandle File:Civil Ensign of the United Kingdom.svg United Kingdom 889 Damaged
30 April 1916 Mod File:Flag of Norway.svg Norway 664 Sunk
1 May 1916 Rio Branco File:Flag of Brazil.svg Brazil 2,258 Sunk
2 May 1916 Mars File:Flag of Norway.svg Norway 581 Sunk
2 May 1916 Memento File:Flag of Norway.svg Norway 654 Sunk
2 May 1916 Superb File:Flag of Norway.svg Norway 770 Sunk
24 August 1916 HMS Duke of Albany File:Naval ensign of the United Kingdom.svg Royal Navy 1,997 Sunk
27 August 1916 Skjaereg File:Flag of Norway.svg Norway 1,019 Captured as prize
7 October 1916 Jupiter File:Civil Ensign of the United Kingdom.svg United Kingdom 2,124 Damaged
8 October 1916 Magnus File:Civil Ensign of the United Kingdom.svg United Kingdom 154 Sunk
12 March 1917 Thode Fagelund File:Flag of Norway.svg Norway 4,352 Sunk
14 March 1917 Davanger File:Flag of Norway.svg Norway 5,876 Sunk

Notes

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  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.

References

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  1. ^ a b c d Rössler 1979, p. 54.
  2. ^ a b c Gröner 1991, pp. 23–25.
  3. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  4. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  5. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  6. ^ Bendert 2000, p. 195.
  7. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  8. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  9. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  10. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).

Bibliography

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  • Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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