Yep as far as i know it was showing a german "Destroyer!" in the Atlantic
They were able to fire a 8.8cm right into the ship's radio tower and dives underneath her. And SUDDENLY they find a last torpedo and detroy the ship with it.
Wikiquote:
The film was generally well received by critics, with 63 out of the 93 critics tallied by review aggregating website Rotten Tomatoes giving the film positive reviews.