Deliberate "mistake": While performing brain surgery on Joe Plaice, Stephen, whose sleeves are rolled up to his elbows, reaches for a spoon with his freckled hand. In the following close-up it is blatantly apparent that it is not Paul Bettany's hand lifting the spoon, not to mention the bit of sleeve (not rolled up) that is visible at the bottom of the screen at the wrist. Then in the overhead shot the table with the instruments is visible, which includes the two boxes and silver spoon. In the next close-up the dark brown box's position and the spoon's position differ (before he picks up the spoon).

Audio problem: Jack tells Pullings that he will take the next watch. Pullings says, "Aye, sir. Mr. Mowett, Mr. Allen, calmly now. You know his orders," however he does not say the latter half of that sentence, he says something else.

Continuity: When Jack and Stephen play their musical instruments, the cloth under Jack's chin changes position in the close-up.

Revealing: After the Captain cuts loose the man who fell overboard in the storm, there is a scene where the men sit around the big table and sing a song. During the song, the camera pans in a sweeping shot around the table. Watch closely as it comes around to the near side of the table, and you'll see the camera's view quickly jolt, as if it lightly smacked against something by accident during the filming.

Continuity: The blood on Jack's shirt constantly changes during the final battle with the Acheron.

Factual error: The (authentic) book on Lord Nelson, that Captain Aubrey gives to Midshipman Lord Blakeney, wasn't published until 1806. The film is set in 1805.

Continuity: During Blakeney's amputation, the cloth roll in his mouth changes position in consecutive shots.

Continuity: In the close-up of the deceased, Mr. Allen lies right beside Peter and Blakeney's knees are visible above Peter's head, while he mourns over Peter. However, in the wide shot as Blakeney still stares at Peter, Peter and Mr. Allen are now much farther apart as Davies sits between the two. Peter and the hammock's position differ in his next close-up as well.

Continuity: The blood stains on the front of Jack's shirt change drastically in the close-up, when he is stabbed, as compared to the previous and following shots.

Continuity: After fighting aboard Acheron, when Jack sorts through some rubble with his sword and as he is stabbed, the items on the ground differ in consecutive shots.

Continuity: When Blakeney and Padeen run into Stephen's tent, Blakeney says, "So I've made a few notes, if you want to see them," and he hands Stephen the diary. The way Blakeney holds the diary, as he hands it to Stephen, differs in the shot facing him and the next one facing Stephen, note the clasp on the diary.

Continuity: As Higgins removes the piece of cloth from the bullet and compares it to the shirt, the blood on his hands and the way he holds the shirt differs in the close-up and wide shots.

Continuity: When Stephen removes the bullet, the rope's knot on the pillow, to the right of Stephen's head, appears, disappears and reappears.

Continuity: In the tent before and during the removal of Stephen's bullet, the ropes at the top of the tent behind Jack differ in the close-ups and wide shots.

Continuity: When Stephen is pressed to examine the two weevils, in the close-ups facing Jack, even after he slams his hand down on the table, the spoon in the gravy boat leans to the side, yet, in the shots facing Stephen the spoon is at the handle.

Continuity: After Stephen asks, "What is the weather gauge?" the table in front of Jack is visible in the following shots. As Jack extols the virtues of the Surprise the position of the nautical dividers in the instrument box differ once Jack is done. When Jack points to the shoals in the close-up, the map's position under another pair of nautical dividers, the log, ink well stand, etc., is different than the previous shots of the table.

Continuity: Jack Aubrey's hair changes in consecutive shots throughout the film. For example, when Stephen tells Jack, "Let me take a look at that brow of yours," his hair differs in the following close-up.

Continuity: When Lofty asks if the Acheron is like a pirate ship, in the wide shot Davies, who holds a pipe, grabs him up. In the next close-up, the pipe Davies holds is positioned completely differently in his hand.

Continuity: In the last shot we see the Surprise make a sharp 90 degrees turn to follow l'Acheron to Valparaiso. It seems that the wind changes 90 degrees in the same instant, because it is not necessary to trim the sails, and the pennant keeps flying in the same direction relative to the ship.

Continuity: When Stephen comes on deck during the rounding of Cape Horn, Jack yells to him from the quarterdeck. Jack has his boat cloak on. He does not put on his boat cloak for several shots later, just after he tells Bonden to steer SSW.