Monday 28th July 2025, 3.05pm (day 5,086)

At the start of World War 2, a good portion of the British Navy was berthed in the immense natural harbour of Scapa Flow, the entrances of which were defended by a range of methods including the sinking of obsolete ships in the channels. That these defenses were inadequate was proven when a U-Boat snuck in anyway and sunk HMS Royal Oak with the loss of hundreds of lives. As a result, Churchill ordered the building of the barriers that now bear his name and block off all entrance to Scapa Flow on its western side — though, in a move typical of many public works projects, these were not in fact finished until literally four days after the war had ended. Anyway, the Barriers now act as causeways linking Orkney’s south-eastern group of islands to the Mainland, and the blockships still sit there, rusting away and playing home to the occasional lobster pot.