The Cruiser Penelope is sunk by U-410 off Naples and earns the distinction of being the last British cruiser to be lost in the war.
The Admiralty announces an 11-day battle with U-boats in Straits of Gibraltar, during which three ships are sunk and several damaged.
The allies announce that Russia is to get a third of Italian fleet, or equivalent in British and American warships.
After being hit by 133 RAF bombs and rockets the day before, the Italian pre-war luxury liner Rex capsizes and sinks off Trieste, where it had been mothballed for much of the war. The Rex was the only Italian ship ever to hold the North Atlantic “Blue Ribbon” for the fastest trans-Atlantic crossing.
The French battle fleet enters Toulon.
British naval units begin operations against the German occupied islands in the Aegean Sea in the eastern Mediterranean.
A German hospital ship, Tübingen is sunk accidentally by allied aircraft in the Adriatic, but luckily no wounded were onboard. The British express regret to the German authorities about the mistake.