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British submarine flotilla in the Baltic

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Title: British submarine flotilla in the Baltic  
Author: World Heritage Encyclopedia
Language: English
Subject: Finnish Civil War, Allied intervention in the Russian Civil War, Aksel Berg, History of the Royal Navy, American Holland-class submarine
Collection: 1910S in Estonia, Allied Intervention in the Russian Civil War, Baltic Sea Operations of World War I, Conflicts in 1915, Conflicts in 1916, Conflicts in 1917, Conflicts in 1918, Finnish Civil War, History of Helsinki, History of Tallinn, History of the Royal Navy, Military History of the Baltic Sea, Military History of the United Kingdom During World War I, Military Units and Formations of the Royal Navy in World War I, Soviet Union–united Kingdom Relations
Publisher: World Heritage Encyclopedia

British submarine flotilla in the Baltic

HMS E18 after passing through the Oresund in September 1915

A British submarine flotilla operated in the Baltic Sea for three years during the First World War.[1] The squadron of nine submarines was attached to the Russian Baltic Fleet. The main task of the flotilla was to prevent the import of iron ore from Sweden to Imperial Germany. The success of the flotilla also forced the German Navy in the Baltic to keep to their bases and denied the German High Seas Fleet a training ground. The flotilla was based in Reval (Tallinn), and for most of its career commanded by Captain Francis Cromie.[2]

The flotilla originally consisted of six E-class and five C-class submarines. The smaller C-class submarines reached the Baltic Sea through canals in Russia;[3][4] the long-range E-class submarines managed to enter the German backwaters by passing undetected through the narrow and shallow Danish Straits. Two of the subs were lost to stranding and one went missing, now presumed sunk by a mine.

In 1918, the German occupation of Tallinn and the Brest-Litovsk peace treaty forced the flotilla to move to Helsinki, under the protection of the Finnish Socialist Workers' Republic. The German intervention in the Finnish Civil War and the landing of the 10,000-strong German Baltic Sea Division in Hanko forced the crew to scuttle the eight remaining submarines and the three support ships, Cicero, Emilie and Obsidian, outside Helsinki harbour.

A similar fate awaited the flotilla's Russian counterpart. The Ice Cruise of the Baltic Fleet had left four Russian Holland type submarines without support in Hanko. The arrival of German troops under Rüdiger von der Goltz on 3 April, forced the Russians to hastily scuttle the submarines—including AG 12 and AG 16—in Hanko harbour.


  • Submarines 1
    • E class 1.1
    • C class 1.2
  • Aftermath 2
  • See also 3
  • References 4
  • Literature 5
  • External links 6


The British submarine HMS E13 aground at Saltholm in The Sound in 1915 before being attacked by German torpedo boats

E class

The E-class submarines entered the Baltic Sea through the Danish Straits through waters only 10 meters (35 ft) deep. On 19 August 1915, HMS E13 was stranded in The Sound near Saltholm. In a breach of Danish neutrality, she was destroyed by German torpedo boat G132, with a loss of 15 of her crew.[5] The other subs managed to enter the Baltic without being intercepted by the Germans. HMS E18 and E19 made the passage to Reval safely in September 1915.[6]

  • HMS E9—commanded by Max Horton—intercepted four German steamers on 18-19 October 1915.[7]
  • HMS E18 was lost in the Baltic Sea in May 1916 while operating out of Reval. Examination of the wreck, discovered off Hiiumaa, Estonia, in 2009, suggests that it struck a mine while sailing on the surface.[8]

The last four E-class submarines—HMS E1 E8, E9, and E19—were scuttled outside Helsinki, south of the Harmaja Light, in 1918 to prevent capture by German troops who had landed nearby.[10]

The route of the White Sea-Baltic Canal after expansions in 1933

C class

Four C-class submarines were sent there in September 1915 by a tortuous route—towed around the North Cape to Archangelsk and taken by barge to Krondstadt via the White Sea Canal.[3][4] HMS C26, C27, C32 and C35 reached Saint Petersburg on the Gulf of Finland in September 1916, but due to difficulties with the batteries became fully operational only in the 1917 sealing season.[3]

Three of these boats—HMS C26, C27, and C35—were also scuttled outside Helsinki in 1918.


The crews of the scuttled submarines were evacuated by Soviet ships to Petrograd and by rail to Murmansk, to join with the Allied intervention forces in North Russia, only weeks before hostilities cut railway lines to Murmansk.

Among the officers were future Admirals and commanders of the British Submarine Service, Sir Noel Laurence and Sir Max Horton and Vice Admiral Leslie Ashmore. Admiral Aksel Berg also served as Liaison Officer from the Imperial Russian Navy, before going on to become the Deputy Minister of Defence for the Soviet Union (1953–57).

In 1935, the Anglo-German Naval Agreement (AGNA) concluded between Britain and Germany, allowed Germany to increase the size of its navy to one-third the size of the Royal Navy, which would have had the effect of allowing the Kriegsmarine to dominate the Baltic.

Finns raised some parts of the scuttled British submarines before the World War II but did not consider any of the submarines to be worth repairing.[11] It is believed that the remains were raised in 1953 by the German company Beckedorf Gebryder and used as scrap metal.[10] Wreck of Cicero is believed to have been located in 1995.[12]

See also

Media related to at Wikimedia Commons


  1. ^ British Submarines and the Baltic Sea
  2. ^ Forgotten Flotilla - British submarines in Russia 1914-1919
  3. ^ a b c  
  4. ^ a b c "War in the Baltic - 1917". Naval-History.Net. December 2000. Retrieved 2010-09-14. 
  5. ^ A deadly morning off Copenhagen in August, 1915
  6. ^ War in the Baltic - 1915
  7. ^ The sinkings of E-9
  8. ^ "Sub's wartime grave discovered". BBC News Online. 2009-10-23. Retrieved 23 October 2009. 
  9. ^ The Submarine Massacre of 1915
  10. ^ a b C 26 - contains information on the wrecks (Finnish)
  11. ^ Auvinen, Visa (1983). Leijonalippu merellä [Lion flag at sea] (in Finnish). Pori, Finland: Satakunnan Kirjapaino Oy.  
  12. ^ Cicero at (Finnish)


  • Roy Bainton Honoured by strangers
  • Michael Wilson, Baltic Assignment, British submarines in Russia 1914-1919, Butler & Tanner ltd, London 1985

External links

  • "The Baltic Campaign". Sea Your History.  
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