Convoy OB 318

Convoy OB 318
Part of Battle of the Atlantic
U-110 and HMS Bulldog
Date 7–10 May 1941 Location Atlantic Ocean, South of Iceland Result British victory
Belligerents
United Kingdom	Germany
Commanders and leaders
Convoy Commodore: WB MacKenzie RNR Escort: Cdr AJB Baker-Cresswell Boarding Party: Sub-Lt. David Balme	Admiral Karl Dönitz
Strength
40 freighters 3 Destroyers 3 Corvettes 2 Naval trawlers	4 submarines
Casualties and losses
7 freighters sunk (35,315 GRT) 40 killed/drowned 2 freighters damaged	1 submarine captured 14 killed/drowned 32 captured 2 submarines damaged

OB 318 was a North Atlantic convoy which ran during the Battle of the Atlantic in World War II. During Operation Primrose Royal Navy convoy escorts HMS Bulldog, Broadway and Aubrietia captured U-110 with an intact Enigma machine and a wealth of signals intelligence, which led to the Allied breakthrough into cracking the German naval Enigma code.^[1]