When Arnold Milbar approaches Becker (posing as his twin brother Baron Von Detner); Milbar is holding a cigarette with his left hand. But on the next cut after introducing himself; Milbar is now holding the cigarette with his right hand.
At the end, when the ship passes the Statue of Liberty, from behind Otto is seen coming to attention with his arms straight at his side and his hands off the rail. But from the front his arms are bent and his hands touch the rail.