Jack Sparrow races to recover the heart of Davy Jones to avoid enslaving his soul to Jones' service, as other friends and foes seek the heart for their own agenda as well.
Davy Jones locked his heart away in a chest because of his love for Calypso, and possibly because of their mutual betrayal. Now, "The Dutchman must have a captain", so after stabbing Davy Jones' heart — killing him — William Turner had to become the new captain of The Flying Dutchman.
They assembled in the First Brethren Court and Jones successfully taught them how to imprison her into her human form. Despite betraying her, Jones still loved Calypso, and in despair and guilt for what he had done, he carved out his own heart from his body and placed it in the "Dead Man's Chest".
He just wanted to not be dead,and controlling the heart meant Davy Jones (or the Kraken) wouldn't kill him. Stabbing the heart was mostly a backup plan. Because being immortal and living forever isn't the same thing as living forever. Jack wanted to be seen as a legend, and not tied-down to anything.
4. How did Davy Jones become a squid? After Calypso's betrayal, Davy Jones carved his heart and locked it in the Dead Man's Chest. He abandoned his duty and turned into an ugly monster with an octopus-like face, tentacle beard, and crab legs and hands.
Bill also explained that he was unable to die and Davy Jones offered him an escape. Elizabeth was not dead nor dying, there was no reason for Will to bring her on the cursed ship.
What happened to the Flying Dutchman after the curse was broken?
Almost a decade after meeting his father on the Dutchman, Henry was able to find and break the Trident with the help of Jack Sparrow. As a result, Will's curse was broken and he was finally free of his duty aboard the Dutchman. The Dutchman surfaced near land and Will came ashore, reuniting with his family.
The rule that whoever stabbed Davy Jones' heart would take on his mantle allowed Will's life to be saved, but only if he cut out his heart and stored it away in a chest— something that was never meant to be a requirement.
Maccus is the First Mate aboard the Flying Dutchman under Captain Davy Jones, and is a major antagonist in Pirates of the Caribbean: Dead Man's Chest and a supporting antagonist in its sequel Pirates of the Caribbean: At World's End.
Jack had to pay his debt. That was their deal. Jones raised the Wicked Wench from the bottom of the sea and let Jack be her captain for 13 years in exchange for 100 years of Jack's servitude aboard the Dutchman. Jack wasn't so valuable but their deal was.
However, in At Worlds End, after Davey Jones is vanquished and Will Turner is dying or dead, Will's heart is cut out so that he can become captain of the Flying Dutchman and take on Davey Jones' former role as psychopomp.
But because she too had mortal blood, Calypso fell in love with a young sailor, named Davy Jones. And she rewarded that love by giving Davy Jones the sacred task of collecting all the poor souls who died at sea, and ferrying them to the worlds beyond.
It's mouth alone is 5 times bigger than Captain Jack, maybe bigger. We see it's true size in At World's End and in Dead Man's when William is thrown underwater. With tentacles that big, the Kraken was still only able to sink the Pearl, not break it in half. So, the Pearl is simply built different.
Davy Jones was further able to order the Kraken to attack specific ships he wanted attacked. If one possessed the heart of Davy Jones, that person could control not only Jones himself, but the Kraken as well, which in effect gave the person control of the oceans.
Right before the film's climactic battle with the pirates at Isla de Muerta, Sparrow swipes a cursed coin from the treasure chest, making himself immortal and capable of dueling Barbossa. He shoots his nemesis with the pistol he has carried for ten years just as Will breaks the curse, killing Barbossa.
In real life the Flying Dutchman was a 17th century Dutch merchantman, captained by Captain Hendrick Van Der Decken, a skilled seaman but one of few scruples, and in 1680 was proceeding from Amsterdam to Batavia in the Dutch East Indies.
Orlando Bloom reprises his role as Will Turner in the fifth film, seen with barnacles forming upon his face, implying he's failing at the responsibilities as Captain of the Flying Dutchman.
Elizabeth bids Jack, Barbossa, and the pirates farewell before reuniting with Will for their "one day" on the nearby island where their marriage is consummated and their only child, Henry Turner, is conceived.
She said, “I said when I finished the trilogy that that was going to be it — I had a wonderful time on it, and I met some extraordinary people, but you know, I think, for me, three is enough, definitely.” Keira Knightley never gave a reason why she left the Pirates of the Caribbean franchise besides saying that three ...
As Jack secretly negotiates his freedom with Beckett, Elizabeth is handed over to Feng, who believes she is Calypso, while the rest of the crew make for Shipwreck Cove aboard the Pearl. Jack throws Will off the ship as part of a plan to seize control of the Dutchman.
Jones would summon the kraken by using a giant hammer that would send shockwaves through the ocean. The kraken would overtake ships ensuring that Jones had a steady supply of sailors to use as slaves aboard his own vessel.
Another possibility to this interpretation, is that Jones clearly had contempt for Beckett due to his hold over him and wanted to be free of his control; if the Kraken were still alive, Jones could very well command it to go after Beckett and use it against his ships.
After failing to rescue the Wench, Jack made a deal with Davy Jones, the ghostly captain of the Flying Dutchman. Jones raised Jack's beloved ship from the depths, giving Jack thirteen years as captain, in exchange for one hundred years of service aboard the Dutchman.
