For Navy buffs, the Buckley-class destroyer escort does a very credible job demonstrating how submarines were hunted in WW2. Especially good is the actual use of live depth charges from rolloff racks and K-guns. The sound track even captures the “thunk” when the hydrostatic pistol fires to detonate the depth charge. The gunfight and ramming sequence at the end of the film is compromised by inadequate special effects. The models of the DE and U-boat and models look like models due to the composition of the flames and the water that cannot be scaled.
The fictional USS Haynes (DE-181) was actually the USS Whitehurst (DE-634) captained by LCDR Walter R. Smith. Twentieth Century Fox leased the ship from the Navy for filming over a six week period in 1957. USS Whitehurst was sunk as a target by a torpedo from USS Trigger (SS-564) on 28 April 1971.
Dem4Bush got me started on these old movies. Found the following “Destroyer” with Glenn Ford and Edward G. Robinson (1943). A bit hokie, but okay. Especially when thinking of that year, and my old man going through his training and getting put on a ship that same year iirc.