Is the only one of the three movies to portray that common pirate stereotype; the eye patch.
This is the first [Pirates] movie where Ragetti and Pintel actually have their names said.
The crew built a sixty foot replica of the front half of the Black Pearl on the back of a semi trailer in the salt flats of Utah for a shoot with the Shadow of the Pearl. The shoot was scheduled for 19 days, it took 4.
The scene in which Jack the Monkey is shivering was accomplished by the concerted efforts of the special effects and animal training departments. The effects guys made a small wooden barrel with a vibrating plate on top. The animal trainers taught the monkey to sit with her arms crossed on the plate.
Captain Barbossa can be seen wearing an Eagle Scout ring in several sequences. This ring signifies that some one in Boy Scouts has earned the highest rank known as Eagle.
Keith RichardsKeith Richards agreed to appear as Jack Sparrow's father and the keeper of the pirate code. He had been pursued for an appearance since the first installment of the series.
There was an actual council of pirates at one time in history.
They started filming without a finished script.
The character of the pirate lord Mistress Ching is likely inspired by the real-life Chinese pirate Cheng I Sao (or Ching Yih Saou), who controlled the South China Sea with her large pirate fleet in the early 1800s.
The Green Flash is a real but very rare optical phenomenon during sunrise or sunset that is best observed at sea. It is caused by the refraction of light in the atmosphere, amplified by a mirage.