Having studied this famous naval battle, I found the movie a bit disappointing. They have drawn the storyline away from the search for the Bismarck and on to a fictional character (More) in naval command headquarters in London, and his love interest (Wynter). The actual naval battles take up less than half of the movie, and when they are done they are not done in a very stimulating way. They are basically just bathtub models of battleships. The sinking of HMS HOOD is particularly disappointing. In reality, the sinking of the Hood (the greatest battleship in the Royal Navy) by a single shot from the mighty Bismarck is what enraged the British people to such an extent that Churchill dispatched the entire British fleet to hunt her down, and avenge the Hood. Very exciting in reality, but very underdone in the movie.
Although the naval battles could have been better done, the movie is still somewhat entertaining, and interesting from a historical perspective. So I would still (marginally) recommend it. (And if you buy it, here is a hot tip! Read the lips of the Captain of the Sheffield after he is accidentally mistaken for the Bismark and attacked by British torpedo planes. Very amusing! (And very avant-garde for a 1960 film!) I can only assume that the censors in 1960 were not proficient lip readers.)
If you are looking for a better naval battle movie I would recommend "That Hamilton Woman," with Jean Simmons and Lawrence Olivier (Emma Hamilton and Horatio Nelson). Lots of naval battles for us little boys and lots of sappy, star-crossed lovers' croonings for the little girls. Excellent family entertainment, with accurate historical content. How could you ask for more? :)