Captain Horatio Hornblower (1951)

Factual error: All of the Lydia's lieutenants are wearing epauletes on their left shoulders.only lieutenant commanders were permitted to wear one on the left shoulder, while the right shoulder was reserved for captains of less than 3 years' seniority.

Factual error: The film is set in 1807 and Arthur Wellesley is referred to as the Duke Of Wellington. He didn't become a Duke until 1814.

Factual error: Upon his triumphant return in Lydia, Admiral McCartney tells Hornblower, "We're giving you a 74. A Frenchman we captured, renamed the Sutherland." According to C.S. Forester, the Sutherland was actually a Dutch 74, originally named the Eendracht, thus explaining its shallow draught, as commented on during the captain's meeting aboard Leighton's flagship.

Surgeon Gundarson: You'll lose more than Hazlett if you don't put ashore for fresh food and water.
Capt. Horatio Hornblower, R.N: Perhaps you'll dig into your medical kit and get me a breath of fresh wind.

Lt. Crystal: Signal from the lookout, sir. Natividad's gone about - one more tack and she'll be at the harbor mouth.
Capt. Horatio Hornblower, R.N: Very good, Mr. Crystal. Well, gentlemen, that leaves time for a rubber of whist.

Midshipman Longley: That was wonderful swordsmanship, sir.
Capt. Horatio Hornblower, R.N: Mr. Longley, when I was a midshipman I was bottom of the class in swordsmanship.