One hundred years ago today, on 9^th July, 1917, just before midnight, HMS Vanguard, a St Vincent class dreadnought, suddenly blew up while at anchor in Scapa Flow, Orkney. 843 of the 845 men on board died.

This memorial to the ship and those who died in the explosion lies in the Royal Naval Cemetery at Lyness on the island of Hoy, Orkney, which we visited on our recent visit there.