HMCS Oakville was a Royal Canadian Navy Flower-class corvette which took part in convoy escort duties during the Second World War.

[3][4][5] The "corvette" designation was created by the French as a class of small warships; the Royal Navy borrowed the term for a period but discontinued its use in 1877.

On 28 August 1942, in the company of American warships and the corvettes Halifax and Snowberry, Oakville was escorting a convoy off Haïti when she attacked the German submarine U-94.

Oakville dropped depth charges to force it to surface, and after bombarding it, rammed the submarine twice, sustaining minor damages to its hull.

Powell, leapt onto the deck of the crippled U-94 and rushed toward the conning tower, which was riddled by shellfire.

But finding that U-94 had been scuttled, he retraced his steps, having to swim to the ladder which led to the conning tower.