SM U 84

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SM U 84
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German EmpireGerman Empire (Reichskriegsflagge)
Construction data
Submarine type: Two-hull ocean-
going boat official draft from MS -type
war mission F
Series: U 81 - U 86
Builder: Germania shipyard, Kiel
Build number: 254
Launch: July 22, 1916
Commissioning: October 7, 1916
Technical specifications
Displacement: 808 tons (above water)
946 tons (under water)
Length: 70.06 m
Width: 6.30 m
Draft: 4.02 m
Pressure body ø: 4.15 m
Max. Diving depth: 50 m
Dive time: 45-50 s
Drive: Diesel engines 2400 PS
E-machines 1200 PS
Speed: 16.8 knots (above water)
9.1 knots (under water)
Armament: 4 × 50 cm bow torpedo tube
2 × 50 cm stern
torpedo tube (12-16 torpedoes)
1 or 2 × 8.8 cm deck gun
1 × 10.5 cm deck gun (1917/18)
Mission data
Commander: Walter Roehr
Crew (target strength): 4 officers
31 men
Calls: 8th
Successes: 30 sunk merchant ships
1 sunk warship
Whereabouts: probably on 26 January 1918 after ramming through PC 62 dropped

SM U 84 was a diesel-electric submarine of the German Imperial Navy that was used in the First World War . It is assumed that U 84 was rammed by the British patrol boat PC 62 in the St. George's Canal on January 26, 1918 and went down with the entire crew .

Calls

U 84 ran on 22 July 1916, which Germaniawerft in Kiel from the stack and was put into service on October 7 1916th From the beginning of December 1916, the boat was assigned to the IV. U-Boat Flotilla in Emden and Borkum . The first and only commanding officer was Lieutenant Walter Roehr .

During the First World War, U 84 carried out eight operations in the eastern North Atlantic and in the adjacent sea areas, the North Sea and Biscay . 30 merchant ships with a total tonnage of 89,397  gross registered tons (GRT) were sunk. These included ships of warring powers as well as ships under neutral flags. With the British sloop HMS Bergamot , a submarine trap was sunk on August 13, 1917 west of Ireland .

On December 14 and 18, 1916, two Scandinavian cargo ships , the Aamot and the Malcom , were confiscated as prizes in the North Sea .

Twice the crew of U 84 reached torpedo shots on large British passenger steamers, but without scoring: On February 18, 1917, the Berrima (11,137 GRT) was torpedoed, which cost four lives; on July 1, 1917 it hit the Demerara (11,484 GRT), on which a person was killed.

The largest ship sunk by U 84 was the British freighter Condesa (8,557 GRT), which sank on July 7, 1917 with a cargo of frozen meat on board west of Bishop Rock . The ship was on a voyage from Buenos Aires to Liverpool .

Whereabouts

On the morning of January 26, 1918, U 84 was sighted in the St. George's Canal between Ireland and Wales by the British patrol boat PC 62 , a coastal sloop with approx. 600 GRT. The British immediately started to ram. Roehr's crew tried to turn around and escape, but were caught. It is assumed that the following ramming led to total loss. U 84 probably fell roughly on the position 51 ° 53 '  N , 5 ° 44'  W . All 40 crew members who were on board at the time of the sinking were killed. According to an article in Ouest-France on October 7, 2015, a submarine was discovered by divers south of the Breton coast off Penmarc'h in the summer of 2014 and identified by them as U 84 about a year later.

Others

U 84 , like its sister boats, was extremely seaworthy. The series became the model for the submarine class IX and foreign designs.

Individual evidence

  1. Bodo Herzog: German U-Boats 1906–1966 . Karl Müller, Erlangen, 1993, p. 139.
  2. Bodo Herzog: German U-Boats 1906–1966 . Karl Müller, Erlangen, 1993, p. 123.
  3. Bodo Herzog: German U-Boats 1906–1966 . Karl Müller, Erlangen, 1993, p. 68.
  4. Ships hit by U 84 - German and Austrian U-boat Successes during WWI - uboat.net .
  5. Sloop Bergamot - Ships hit by U-boats - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net .
  6. Steamer Aamot - Ships hit by U-boats - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net .
  7. steamer Malcolm - Ships hit by U-boats - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net .
  8. Passenger steamer Berrima - Ships hit by U-boats - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net .
  9. Passenger steamer Demerara - Ships hit by U-boats - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net .
  10. Steamer Condesa - Ships hit by U-boats - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net .
  11. Bodo Herzog: German U-Boats 1906–1966 . Karl Müller, Erlangen, 1993, p. 90.
  12. ^ Paul Kemp: The German and Austrian submarine losses in both world wars . Urbes, Graefelfing, 1998, p. 43.
  13. http://www.ouest-france.fr/elections/departementales/finistere/penmarch-le-sous-marin-coule-en-1918-ete-identifie-3743740
  14. Bodo Herzog: German U-Boats 1906–1966 . Erlangen: Karl Müller Verlag, 1993, p. 50.

literature

  • Bodo Herzog: German U-Boats 1906–1966 . Karl Müller, Erlangen, 1993, ISBN 3-86070-036-7 .
  • Paul Kemp: The German and Austrian submarine losses in both world wars . Urbes, Graefelfing, 1998, ISBN 3-924896-43-7 .

Web links