Yep....When Trumpets Fade, was a great movie about the Hurtgen Forest. We had a TV personality here in Houston, Mr. Paul Bosch, who was a 1st Lt there....he authored an excellant book on the Hurtgen Forest campaign.
As mentioned...The Cruel Sea...excellant movie, read the book by Nicholas Monsarrat.
They Were Expendable....Robert Montgomery, Donna Reed, Ward Bond, John Wayne....PTs early in the war.
Operation Pacific....John Wayne, Patricia Neal....great fleet boat shots.
In Harms Way....John Wayne, Patricia Neal, Kirk Douglas, George Kennedy, Henry Fonda......good WWII naval flick.
The Sea Chase....John Wayne, Lana Turner.....German merchant ship running British blockade.
Sink the Bismark.....great British movie.
Action in the North Atlantic......Ramond Massey, Humphrey Bogart, merchant tanker and liberty ship vs. U-Boats and Luftwaffe.
Under Ten Flags.....about the German commerce raider Atlantis.
Ok...here's one....The Key....starring William Holden and Sophia Loren.....book by Jan De Hartog (The Distant Shore). Great sea story...Loren looks great in pajamas too!