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26th May 1943

Shipping Losses by Month Jan 42 to Dec 43

Looking back on the Battle of the Atlantic, between the entry of the USA to the war and the end of 1943, the pulse of the battle can be seen more clearly.  Independent shipping had been massacred off the east coast of the USA during the first 6 months of 1942, as the US Navy refused to listen to the hard one experience of the Royal Navy and the Royal Canadian Navy.  Yet with the departure of the U-boats for the east coast of the USA during the first half of 1942, the North Atlantic convoys were relatively undisturbed and convoy after convoy got through with no losses.  But when the U-boats returned to the convoys routes from the middle of the storm broke with massive force against the Allies.  Only after month of heavy losses did the Allies put reality above strategic dogma and seek to properly safeguard the maritime communications on which all their hopes depended.  The result of this small but vital improvements in resources was seen by the end of May – victory at sea and victory on land.