HMS Hood to be commemorated in Orkney May 21, 2021 at 10:33 am HMS Hood departed from Scapa Flow on her fateful final journey 80 years ago, this weekend. (HMS Hood Association) A series of online events will mark the 80th anniversary of the sinking of one of the UK’s most famous naval vessels. Another Orkney Production’s (AOP) annual event Celebrating Scapa Flow kicks off, this Friday evening, online. This year commemorate HMS Hood with an online programme on May 21 and 22, hosted in conjunction with the Orkney International Science Festival. Shortly before midnight on May 21, 1941, HMS Hood weighed anchor and sailed out of Scapa Flow through Hoxa Sound to patrol the waters south of Iceland and prevent Germany’s largest battleship, Bismarck, from reaching the North Atlantic.