This was essentially a stub but i moved everything over. Her pre43 RN service included battle of Sparventio but it was important to spread unit types a bit
On 26 April, Griffin and the destroyer Acheron captured the German trawler Schiff 26, bound for Narvik with a cargo that included guns, mines and ammunition. She was disguised as the Dutch Polares and armed with one gun and two torpedo tubes. Crewmen aboard the trawler failed to properly dispose of some of her code documents when she was boarded from Griffin. The recovered material allowed Bletchley Park to retrospectively break 6 days of naval Enigma codes. Whilst not operationally useful, this was the first break of the code and gave Alan Turing essential information on how Enigma was used, so allowing methods to be developed for future breaks. This was the first of several similar captures that were essential for the continued Allied breaking of the naval Enigma codes.
Technically, this was when she was RN, but it could be a justification for code intercepts (duinedin) or similar
Work on the conversion began on 2 November in Southampton[11] and included the removal of two 4.7-inch guns and the 12-pounder AA gun, and their replacement with a Hedgehog anti-submarine mortar forward and additional depth charges aft. Type 286 and 271 radar sets were fitted, as well as additional 20 mm Oerlikon AA guns.[25]
DESTROYER LEADER: While you control another Destroyer, you get +1 initiative.
Formerly HMS Griffon. HMCS Ottawa waa the second ship of that name in the Royal Canadian Navy. Already a veteran of battles in norway, north africa and the mediterrean. The Ottawa was the lead destroyer of a RCN flotilla operating in the north atlantic, and later another of the french coast during Operation Overlord.