Puneet Varma (Editor)

SM U 72

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Name
  
U-72

Commissioned
  
26 January 1916

Draft
  
4.86 m

Ordered
  
6 January 1915

Launched
  
31 October 1915

Builder
  
Bremer Vulkan

Fate
  
1 November 1918 - Scuttled during the evacuation of Cattaro in position

Class and type
  
German Type UE I submarine

Displacement
  
755 t (743 long tons) surfaced832 t (819 long tons) submerged

SM U-72 was one of 329 submarines serving in the Imperial German Navy in World War I. U-72 was engaged in the commerce war in First Battle of the Atlantic.

Contents

Design

German Type UE I submarines were preceded by the longer Type U 66 submarines. U-72 had a displacement of 755 tonnes (743 long tons) when at the surface and 832 tonnes (819 long tons) while submerged. It had a total length of 186 ft 4 in (56.79 m), a pressure hull length of 153 ft 1 in (46.66 m), a beam of 19 ft 4 in (5.89 m), a height of 27 ft 1 in (8.26 m), and a draught of 15 ft 11 in (4.85 m). The submarine was powered by two 900 metric horsepower (660 kW; 890 shp) engines for use while surfaced, and two 900 metric horsepower (660 kW; 890 shp) engines for use while submerged. It had two propeller shafts. It was capable of operating at depths of up to 50 metres (160 ft).

The submarine had a maximum surface speed of 10.6 knots (19.6 km/h; 12.2 mph) and a maximum submerged speed of 7.9 knots (14.6 km/h; 9.1 mph). When submerged, it could operate for 83 nautical miles (154 km; 96 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, it could travel 7,880 nautical miles (14,590 km; 9,070 mi) at 7 knots (13 km/h; 8.1 mph). U-72 was fitted with two 50 centimetres (20 in) torpedo tubes (one at the starboard bow and one starboard stern), four torpedoes, and one 5.5 centimetres (2.2 in) deck machine gun. It had a complement of thirty-two (twenty-eight crew members and four officers).

Operations

U-72 left the stocks at Hamburg (AG Vulcan) in March 1916, joined the Kiel School, and first entered North Sea on 11 April 1916. Attached 1st Half Flotilla, under the command of Kaptlt. Krafft.

  • 15–21 April 1916. Cruise in North Sea. Returned with defects.
  • 23–2 May 1916. ? Cruise in North Sea.
  • 21 June to 4 July 1916. Northabout. Laid mines off Cape Wrath.
  • 20 August - ? 15 September 1916. Northabout to Mediterranean. Laid mines off Lisbon, Oran and Cape Blanc. On arriving at Cattaro joined the Pola-Cattaro Flotilla.
  • Of U-72's operations in the Mediterranean, little is known after her arrival in September 1916.
  • On a cruise from the middle of February 1917 until 6 March 1917, she sank 4 steamers and stopped British hospital ship, Dunluce Castle. She damaged SS Megantic and was later unsuccessfully attacked by armed trawlers.
  • U-72 was reported as not having cruised, with the above exception, after January 1917, and was regarded as a lame duck. Indeed of her class, U-71 to U-80 (all minelayers), U-80 was the only boat not continually in dockyard hands. At the end of October 1918, U-72 was blown up at evacuation of Cattaro.

    • References

    SM U-72 Wikipedia
    (Text) CC BY-SA


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