Where was The Cruel Sea filmed?

1953 film by Charles Frend

The Cruel Sea (1953) was filmed in London, Plymouth, Ealing, Ealing Studios, HMNB Devonport, Plymouth Sound and 1 more place, 7 places named in its Wikipedia article, in the United Kingdom. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data