Other mistake: When Sir Anthony Hopkins (playing Johnny McLeod) is awaiting the arrival of the suspected bomber O'Neill (played by Cyril Cusack), a funny mistake occurs. Cusack sees Hopkins, smiles and greets him with a cheerful "Hello, Tony!" instead of "Hello, Johnny!" Being a pro, Hopkins doesn't blink an eye!
Lt. Cmdr. Anthony Fallon: I blew a great big hole in your ship, Captain. I'd better give it back to you.