Where was Crash Dive filmed?
1943 film by Otto Brower, Archie Mayo
Crash Dive (1943) was filmed in New London and Naval Submarine Base New London, 2 places named in its Wikipedia article, in the United States. 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.
Places per Wikipedia's article
The Wikipedia article names 2 places. Each links to the sentence that says so.

