Corrected entry: Near the end of the film when the crew are playing cricket on the island the camera pans out to show the batsman in front of three stumps. However cricket didn't start to be played with three stumps until at least 50 years after the film is set. At the time of the movie time people only played with two. (01:33:40)
Corrected entry: Aubrey's ship HMS Surprise spends a lot of its time with the guns run out. In reality, they would only be run out for battle, secured inboard since the ship could ship water through open gun-ports. Also, the captain would not be running around the ship, doing "hands on" stuff, like on the helm. He'd stand back and issue orders.
Corrected entry: Bonden is the Coxswain, a petty officer. At one point, the captain addresses him as 'Mr' Bonden, a term of address reserved for warrant officers. In a similar vein, Higgins, the Surgeon's Mate, is listed on the cast as a warrant officer. Surgeon's Mates were petty officers.
Corrected entry: Upon arriving at the Galapagos Islands, Aubrey encounters the survivors of a British whaler who claim the French privateer captured their ship and seized their cargo of oil. This is hogwash. A privateer, by its very nature, has no room to transport bulk cargo like whale oil. They would be likely to load any ambergris from the whaler, but the premise that a privateer would make profits by seizing and burning whalers is specious at best.
Corrected entry: If the scene in which Jack Aubrey gives the order "hard a larboard" was indeed a rudder order the face of the compass wouldn't have rotated clockwise. That would mean the ship was actually making a turn to the left. The compass shows a southerly course, rotates clockwise, and eases to show an easterly course. That's a 90 degree turn to port, is it not?
Corrected entry: In the scene where the Surprise is being re-fitted after the first encounter with the Acheron, Captain Aubrey tells Mr. Allen, "A week spent crawling through the Brazilian rain forest looking for a new mast won't do." He would not have used "rain forest" in 1805, the term "rain forest" was first coined in 1898 by a German botanist. (00:23:00)
Corrected entry: During Stephen's self-performed surgery, he asks Higgins for the catling. This instrument, a long, sharp, double-edged knife used for amputations, is not what a doctor would have used to make his initial incision and it is not what Higgins hands him in the subsequent shot. (01:30:55)
Corrected entry: In the final DVD scene Jack and Stephen are playing their instruments. Jack is strumming his violin before picking up his bow. The sound of the strumming continues for several seconds after Jack stops and before he starts playing using the bow. (02:02:35)
Corrected entry: It is highly unlikely that a French privateer would attack a British frigate, even with an advantage in size and armament. Privateers were in the profitable business of capturing enemy merchantmen, not in the dangerous one of fighting enemy warships. The Acheron would only fight the Surprise if forced to. I can't see why the screenwriters made the Acheron a privateer - making her a French warship would have been more realistic and would have detracted nothing from the story.
Corrected entry: Surprise, disguised as a whaler, makes a quick tack (within a minute) so that both sides of the ship can fire broadsides into Acheron. In real life, a square-rigger such as Surprise would take a half-hour or more to turn around, with much effort on the part of the crew to maneuver the sails and spars.
Corrected entry: When the Surprise is firing upon the Acheron in the last battle of the film, they completely destroy the main mast as shown in a wide shot of the Acheron's mast falling all the way off. However, when half of Jack's crew take the Acheron under Tom's command in the last 5 minutes of the film, the mast in miraculously back on. This is without them ever stopping to retrieve another mast or having enough time.
Corrected entry: After the shot where Aubrey sees Hogg in the lifeboat, Hogg and the whalers climb up the starboard accommodation ladder. The starboard accommodation ladder was used for formal occasions; the larboard ladder when no ceremony was desired. (01:05:05)
Corrected entry: A man in the cold Cape Horn waters would lose his senses in less than a minute; he wouldn't be able to swim vigorously. (00:51:05)
Corrected entry: When Stephen is taking measurements of the tortoises, there's a close up of him measuring around one's neck. The tortoise if obviously dead.
Corrected entry: The lights on the Surprise are candle or oil lamps. These would flicker, in the movie they don't flicker at all. They're electric.
Corrected entry: In the beginning shot it reads "HMS Surprise, 28 Guns..." On the ship, there are 12 Guns on each side of the gun deck, that equals 24. On the quarterdeck, there are 4 Carronades which is 28, the purposed number. But there are also 2 Bow chasers, which would equal in a 30 Gun ship. There are also 2 Swivels but those don't count.
Corrected entry: In the shot where Capt. Aubrey gives a navigational lesson, he refers to Mr. Williamson's sextant. Actually, it's an octant.