Where was In Harm's Way filmed?

Filming locations

• Towns & cities San Francisco United States City and county in California, United States
• Towns & cities Honolulu United States Capital city of the U.S. state of Hawaii and seat of Honolulu County
• Towns & cities San Diego United States Seat of San Diego County, California, United States; second-largest city in California
• Landscapes & nature Ford Island United States Islet at Pearl Harbor, Oahu, Hawaii, USA

  “The film received extensive cooperation from the U.S. Department of Defense, especially the U.S. Navy and the U.S. Marine Corps, with substantial filming occurring both aboard warships at sea and ashore at Naval Station Pearl Harbor (to include Ford Island) and Marine Corps Air Station Kaneohe Bay.” Wikipedia

• Landmarks & buildings Marine Corps Air Station Kaneohe Bay United States US Marine Corps base in Hawaii, United States
• Landmarks & buildings USS Saint Paul 1944 Baltimore-class cruiser

Also per Wikipedia's Background and production section

Wikipedia’s Background and production section names 1 more place. Each links to the sentence that says so.

Also shot in these places

Set in the same places