I cannot think much of actors other than Tom Hanks for the lead role. He is very credible, exuding maturity, leadership, and kind of fatherly-figure to his crew who are facing imminent death from an enemy they can hardly see, much more, very cunning and methodical, that are the German U-boats. Puts the audience at the edge of his seat as they realistically dodge torpedoes and still look after the convoy which are sitting ducks in the true- to-life events that happened in those supplies crossings without air protection.