The last battleship to serve with the Royal Navy was HMS Vanguard. She was armed with 8 x 15" guns taken from the battlecruisers Glorious and Courageous when those 2 ships were converted to aircraft...
The USN has eight...all are retired:
1. USS Texas (the only Dreadnaught remaining afloat)
2. USS North Carolina (a survivor of a triple torpedoing in WWII in which the carrier USS Wasp was sunk,...
The most famous RN battleship sunk in WWII was the HMS Hood, sunk by the German battleship Bismarck in May 1941 in the Denmark Strait, one of several ships including the HMS Prince of Wales, trying...