SM UB-72

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For other ships of the same name, see German submarine U-72.
UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-72.
Career (German Empire)
Name: UB-72
Ordered: 23 September 1916[1]
Builder: AG Vulcan, Hamburg
Cost: 3,337,000 German Papiermark
Yard number: 96
Launched: 30 July 1917[2]
Commissioned: 9 September 1917[2]
Fate: Sunk 12 May 1918 at 50°8′N 2°41′W / 50.133°N 2.683°W / 50.133; -2.683Coordinates: 50°8′N 2°41′W / 50.133°N 2.683°W / 50.133; -2.683 by British submarine.[2]
General characteristics [3]
Class and type: German Type UB III submarine
Displacement: 508 t (500 long tons) surfaced
639 t (629 long tons) submerged
Length: 55.52 m (182 ft 2 in) (o/a)
Beam: 5.76 m (18 ft 11 in)
Draught: 3.70 m (12 ft 2 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: 13.4 knots (24.8 km/h; 15.4 mph) surfaced
7.5 knots (13.9 km/h; 8.6 mph) submerged
Range: 8,420 nmi (15,590 km; 9,690 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[4]
Armament:
Service record
Part of: V Flotilla
28 October 1916 – 25 April 1917
II Flotilla
25 April 1917 – 12 May 1918
Commanders:
  • Kptlt. Walter Creutzfeld[5]
    9 September 1917 – 1 March 1918
  • Oblt.z.S. Friedrich Traeger[6]
    2 March – 12 May 1918
Operations: 5 patrols
Victories: 5 merchant ships sunk (10,551 GRT)
1 merchant ships damaged (3,358 GRT)

SM UB-72 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 German Imperial Navy on 9 September 1917 as SM UB-72.[nb 1]

UB-72 was serving in the English Channel when she was sunk by a torpedo from HMS D4 at 50°8′N 2°41′W / 50.133°N 2.683°W / 50.133; -2.683 on 12 May 1918.[2]

Construction[edit]

She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 30 July 1917. UB-72 was commissioned later that same year . Like all Type UB III submarines, UB-72 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-72 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,420 nautical miles (15,590 km; 9,690 mi). UB-72 had a displacement of 508 t (500 long tons) while surfaced and 639 t (629 long tons) when submerged. Her engines enabled her to travel at 13.4 knots (24.8 km/h; 15.4 mph) when surfaced and 7.5 knots (13.9 km/h; 8.6 mph) when submerged.


Summary of raiding career[edit]

Date Name Nationality Tonnage
(GRT)
Fate[7]
3 February 1918 Svanfos  Norway 896 Sunk
28 March 1918 HMS Tithonus  Royal Navy 3,463 Sunk
30 March 1918 Vafos  Norway 1,322 Sunk
6 May 1918 Sandhurst  United Kingdom 3,034 Sunk
8 May 1918 Quito  United Kingdom 3,358 Damaged
9 May 1918 Baron Ailsa  United Kingdom 1,836 Sunk

Notes[edit]

  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.

References[edit]

  1. ^ Rössler 1979, p. 61.
  2. ^ a b c d Gröner 1985, p. 54.
  3. ^ Gröner 1985, pp. 52-53.
  4. ^ Gröner 1985, p. 53.
  5. ^ Helgason, Guðmundur. "Walter Creutzfeld". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015. 
  6. ^ Helgason, Guðmundur. "Friedrich Traeger". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015. 
  7. ^ Helgason, Guðmundur. "Ships hit by UB-72". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015. 

Bibliography[edit]