Errors in geography: The action is meant to take place on a volcanic atoll in the Pacific. When they sail out for the final battle the cliffs in the background are sedimentary chalk cliffs.
Continuity: When the Essen's main guns fire on Brown at the Resolution inlet, three guns per turret are visible, but when the Essen is seen sinking after the final battle with the British task force, only 2 guns per turret are visible.
Continuity: While Brown is firing on the ship, his rifle keeps changing from a German Mauser 98 to a British Enfield. This becomes apparent in the close up views where the rear bridge peep sight is visible. The Mauser rear sight in on the barrel.