Tyrant of the Sea (1950)

In 1803, the only thing standing between Napoleon and his plan of world domination is England and the British Navy. The admiralty, learning that Napoleon has assembled an invasion fleet decides to send out one of its vessels to destroy it the French flagship under cover of fog. Forced out of retirement, ruthless, tyrannical and temperamental Captain William Blake is put in command. He wields his command with sadistic fury until an epidemic of scurvy attacks the crew and, when he refuses to go ashore for needed provision, mutiny and insubordination results...and, then, the French flagship arrives.