A little Xmas/ New Year pressie for you all.
Design Study 363 was one of a series of "corvette" studies made during 1963-64 as a study of frigate types. It seems in design to owe much to the earlier DS 352 which was entered into some long-term costings during 1963 alongside the Type 82 and a GP frigate design.
This is very much a thrid-rate ship in RN parlance, basically a basic type suited to one role only and much like the Type 14 of the 1950s.
Diemensions were 320ft (wl) and 37ft beam, displacement 2,075 tons, 20,000shp with two 10,000shp Rushton diesels for 26kts and endurance 4,000nm at 18kts. Armament was one Bofors 75mm L56 gun (300 rounds) with a remote visual sight and one Limbo (90 rounds). Radar was Type 978 with Types 170 and 177 sonars. Crew would have been 10 officers, 30 senior and 120 junior ratings. Eventually these designs led to the Type 19, which in turn was replaced by the Type 21.