Complex sentence: At one point Norman Lloyd glances at a capsized ship in the harbor and smiles knowingly; the ship is the former SS Normandie renamed the "USS Lafayette", which was rumored to have been sabotaged by the Germans.
Split into simpler sentences: At one point Norman Lloyd glances at a capsized ship in the harbor and smiles knowingly. The ship shown is the former "SS Normandie" (renamed the "USS Lafayette" in the film) which was rumored to have been sabotaged by the Germans.