After the end of the First World War, the German High Seas Fleet was interned in Scapa Flow in Orkney. The allies couldn't agree what to do with the ships, so they were left for some time with a skeleton crew. In June 1919, the Germans heard the hostilities were about to break out and the order went out to scuttle the entire fleet. In all over 70 ships were sunk. The subsequent salvage operation was the biggest in history and most of the wrecks were salvaged. However, there are still 4 cruisers and 3 battleships in Scapa Flow for today's diver to visit.