British, Allied and Neutral Merchant Ships of all Tonnages

Analysis of Losses by Enemy Action

Source:

Grove, Eric J. The Defeat of the Enemy Attack on Shipping 1939-1945, Table 3.
Navy Records Society, volume 137 (Ashgate Publications), 1997.
Despite the title, this book contains some valuable information on the WW1 submarine campaign, and is well worth consulting.


4 August 1914 - 31 October 1918
CauseNumber Percentage (of numbers) Tonnage Percentage (of total tonnage)
U-boat 4,837 87.6% 11,135,460 87.4%
Mine 497 9.1% 1,044,456 8.2%
Surface Craft 177 3.2% 553,826 4.3%
Aircraft 5 0.1% 8,039 0.1%
TOTAL: 5,516 100.0% 12,741,781 100.0%

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Last Updated: 8 March, 1998.