Bad - really, really bad
I love WW2 moral booster films, and even the post-war films that copy them. This film, however, is just plain bad. Bad acting, bad script, bad continuity....
Nancy is goolish. Ronny Ray Gun is predictably steel jawed and determined - humm - maybe that explains his Presidency - he had this script.
I particularly like the part where our heroes in a U.S Submarine (that is in fact a model of a Japanese sub) is depth charged by the Japanese, who amazingly enough, are not only running around at full speed in the middle of a mine field, but are attacking the U.S. sub in a U.S. PT Boat! And not just any PT Boat apparently. This PT boat had DE/DD style racks off the stern and held a great many depth charges. In fact, only some of the U.S. PT Boats carried depth charges, and even then only two that rolled over the side, not off the stern.
Is this a big deal - not really - but it underscores a general lack of attention by the filmmaker that permeates the entire film.
Making a film with a limited budget is a challenge - one this film failed to meet. I dare say it is so shoddy that it verges on being an insult to those that served in submarines.