HMS Shrewsbury Castle was one of 44 Castle-class corvette built for the Royal Navy during the Second World War.

Completed in 1944, she was loaned to the Royal Norwegian Navy as a convoy escort during the war, renamed HNoMS Tunsberg Castle and was sunk by a mine in December 1944.

The Castle-class corvette was a stretched version of the preceding Flower class, enlarged to improve seakeeping and to accommodate modern weapons.

The Castles carried enough fuel oil to give them a range of 6,500 nautical miles (12,000 km; 7,500 mi) at 15 knots (28 km/h; 17 mph).

A Type 277 search radar and a HF/DF radio direction finder rounded out the Castles' sensor suite.