Wikipedia

SM UC-33

For other ships with the same name, see German submarine U-33.

SM UC-33 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 29 August 1915 and was launched on 26 August 1916. She was commissioned into the German Imperial Navy on 25 September 1916 as SM UC-33.[Note 1] In seven patrols UC-33 was credited with sinking 36 ships, either by torpedo or by mines laid. UC-33 was shelled and then rammed by patrol boat PC61 captained by Frank Worsley at position 51°55′N 6°14′W / 51.917°N 6.233°W / 51.917; -6.233 in St. George's Channel on 26 September 1917.[1]

History
German Empire
NameUC-33
Ordered29 August 1915[1]
BuilderAG Vulcan, Hamburg[2]
Yard number72[1]
Launched26 August 1916[1]
Commissioned25 September 1916[1]
FateShelled and rammed, 26 September 1917[1]
General characteristics [3]
Class and typeType UC II submarine
Displacement
  • 400 t (390 long tons), surfaced
  • 480 t (470 long tons), submerged
Length
Beam
  • 5.22 m (17 ft 2 in) o/a
  • 3.65 m (12 ft) pressure hull
Draught3.68 m (12 ft 1 in)
Propulsion
Speed
  • 11.6 knots (21.5 km/h; 13.3 mph), surfaced
  • 6.7 knots (12.4 km/h; 7.7 mph), submerged
Range
  • 10,040 nmi (18,590 km; 11,550 mi) at 7 knots (13 km/h; 8.1 mph), surfaced
  • 53 nmi (98 km; 61 mi) at 4 knots (7.4 km/h; 4.6 mph), submerged
Test depth50 m (160 ft)
Complement26
Armament
Notes48-second diving time
Service record
Part of:
  • I Flotilla
  • 16 December 1916 – 26 September 1917
Commanders:
  • Kptlt. Martin Schelle[4]
  • 25 September 1916 – 19 July 1917
  • Oblt.z.S. Alfred Arnold[5]
  • 20 July – 26 September 1917
Operations: 7 patrols
Victories:
  • 31 merchant ships sunk
    (19,628 GRT)
  • 1 warship sunk
    (370 tons)
  • 4 auxiliary warships sunk
    (997 GRT)
  • 1 merchant ship damaged
    (6,430 GRT)

Design

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A Type UC II submarine, UC-33 had a displacement of 400 tonnes (390 long tons) when at the surface and 480 tonnes (470 long tons) while submerged. She had a length overall of 49.45 m (162 ft 3 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.68 m (12 ft 1 in). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 250 metric horsepower (180 kW; 250 shp) (a total of 500 metric horsepower (370 kW; 490 shp)), two electric motors producing 460 metric horsepower (340 kW; 450 shp), and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of 50 metres (160 ft).[3]

The submarine had a maximum surface speed of 11.6 knots (21.5 km/h; 13.3 mph) and a submerged speed of 6.7 knots (12.4 km/h; 7.7 mph). When submerged, she could operate for 53 nautical miles (98 km; 61 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 10,040 nautical miles (18,590 km; 11,550 mi) at 7 knots (13 km/h; 8.1 mph). UC-33 was fitted with six 100 centimetres (39 in) mine tubes, eighteen UC 200 mines, three 50 centimetres (20 in) torpedo tubes (one on the stern and two on the bow), seven torpedoes, and one 8.8 cm (3.5 in) Uk L/30 deck gun. Her complement was twenty-six crew members.

Summary of raiding history

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Date Name Nationality Tonnage[Note 2] Fate[6]
8 February 1917 Derika   Netherlands 153 Sunk
14 February 1917 Eudora   United Kingdom 1,991 Sunk
18 February 1917 HMT Clifton   Royal Navy 242 Sunk
24 February 1917 HMY Verona   Royal Navy 437 Sunk
14 April 1917 Hermione   United Kingdom 4,011 Sunk
20 April 1917 HMT Loch Eye   Royal Navy 225 Sunk
21 April 1917 Jedburgh   United Kingdom 165 Sunk
21 April 1917 Yeovil   United Kingdom 164 Sunk
5 May 1917 Lodes   United Kingdom 396 Sunk
23 May 1917 Beinir   Denmark 73 Sunk
23 May 1917 Britannia   Denmark 69 Sunk
23 May 1917 Else   Denmark 78 Sunk
23 May 1917 Margrethe   Denmark 104 Sunk
23 May 1917 Olearia   United Kingdom 209 Sunk
23 May 1917 Sisapon   United Kingdom 211 Sunk
23 May 1917 Streymoy   Denmark 81 Sunk
24 May 1917 Brestir   Denmark 69 Sunk
24 May 1917 Isabella Innes   Denmark 37 Sunk
24 May 1917 Traveller   Denmark 76 Sunk
25 May 1917 A. H. Friis   Denmark 110 Sunk
25 May 1917 Glyg   Norway 358 Sunk
25 May 1917 Whinlatter   Norway 1,378 Sunk
28 June 1917 Corona   United Kingdom 48 Sunk
29 June 1917 Gem   United Kingdom 79 Sunk
29 June 1917 Manx Princess   United Kingdom 87 Sunk
30 June 1917 HMS Cheerful   Royal Navy 370 Sunk
30 June 1917 Germania   Sweden 1,064 Sunk
1 July 1917 Ariel   United Kingdom 108 Sunk
2 July 1917 General Buller   United Kingdom 72 Sunk
2 July 1917 Hamnavoe   United Kingdom 57 Sunk
6 July 1917 Handel en Visscherij   Netherlands 76 Sunk
6 July 1917 Piet Hein   Netherlands 100 Sunk
6 July 1917 Skjald   Norway 477 Sunk
7 July 1917 HMD Southesk   Royal Navy 93 Sunk
13 August 1917 Akassa   United Kingdom 3,919 Sunk
19 August 1917 Spectator   United Kingdom 3,808 Sunk
26 September 1917 San Zeferino   United Kingdom 6,430 Damaged

References

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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.

Citations

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  1. ^ a b c d e f Helgason, Guðmundur. "WWI U-boats: UC 33". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 February 2009.
  2. ^ Tarrant, p. 173.
  3. ^ a b Gröner 1991, pp. 31–32.
  4. ^ Helgason, Guðmundur. "WWI U-boat commanders: Martin Schelle". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 February 2015.
  5. ^ Helgason, Guðmundur. "WWI U-boat commanders: Alfred Arnold". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 February 2015.
  6. ^ Helgason, Guðmundur. "Ships hit by UC 33". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 February 2015.

Bibliography

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  • Bendert, Harald (2001). Die UC-Boote der Kaiserlichen Marine 1914-1918. Minenkrieg mit U-Booten (in German). Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0758-7.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • Gardiner, Robert; Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-907-8. OCLC 12119866.
  • Tarrant, V. E. (1989). The U-Boat Offensive: 1914–1945. Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-764-7. OCLC 20338385.
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