ORIGINAL: steamboateng
An older novel, which I read away back in the early '60's, 'The Cruel Sea'' by Nicolas Montseratt, describes life on a Flower Corvette during the Battle of the Atlantic. A good read, if you can find it at your local library.
Yes, +1 here.
Also, 'The Good Shepherd', by C.S. Forester (who wrote the Horatio Hornblower novels). About a convoy commander battling through a wolf pack in the North Atlantic.