The Probert Encyclopaedia of Ships

THOROUGH

HMS Thorough was a British T Class patrol type submarine of 1090 tons displacement launched in 1943. HMS Thorough had a top speed of 15.25 knots surfaced and 9 knots submerged, carried a complement of 53 and was armed with one 4 inch dual-purpose gun; one 20 mm anti-aircraft gun; three machine-guns and about ten 21 inch torpedo tubes.
Research Thorough