William Hedley Kett, DSC and Bar (28 July 1913 – 28 June 2014) was a British submariner who commanded two ships during the Second World War.

[2] Clyde was involved in an action in Tarrafal Bay on 21 September 1941, after having been ordered to ambush U-boats that were meeting there to refuel and resupply.

[2] Clyde was then used for 'Magic Carpet' runs, transporting fuel and supplies from Gibraltar to Malta, with Kett overseeing the loading and unloading of the submarine, gaining the nickname 'Tanker'.

[2] After carrying out five supply runs, Kett flew back to Britain aboard a Vickers Wellington and attended the course for submarine captains.

[2] Graduating from the course, Kett was given command of HMS P555,[3] assigned as a dummy target off Tobermory for surface ships practising anti-submarine tactics.

[2] One of Kett's last services in the Mediterranean was to use Ultimatum's sonar to plot the location of enemy mines of the southern French coast prior to Operation Dragoon.