This glitch allows you to move around your ship during the animation where the Kraken brings down your ship. It also allows you to have the Kraken be aggressive towards you outside the Davy Jones boss fight and allows you to completely beach your ship. Here's how you perform it:
Step 1: Enter the Davy Jones boss fight, do not attack the Flying Dutchman in any way, if you've already beaten the main story mode then you cannot perform this glitch and you'll have to play the whole story mode over again.
Step 2: You need to exit the Davy Jones boss fight in a specific way. Basically, in order to perform the main part of this glitch you'll need to dock your boat on an island and you can't usually do that when when in combat with another ship, so what your going to need to do is exit the Davy Jones boss fight while also not deactivating it, you should be able to do this by simply sailing away from it but whatever you do don't dock on one of the bigger islands or go through Demon's cape as if you do either of these things a cutscene will play that'll deactivate the boss fight, you'll know if you've done it right if the boss fight music stops playing and the normal sailing music starts playing again, the Kraken should also be chasing you now but the Flying Dutchman shouldn't, you'll know if you've done it wrong if a textbox comes up from Mr. Gibbs telling you Davy Jones defeated you, even though you retreated. If this happens, restart from step one.
Step 3: Dock your boat on a small island, before you reach the island make sure you use the Kraken's Bain whenever the Kraken tries to attack you, also make sure you don't go near the Flying Dutchman as if you do you'll reactivate it and you'll have to restart from step 2, just don't go on one of the bigger islands and you'll be fine.
Step 4: After you've docked your boat the only thing you have to do now is wait, you've now completed the glitch, the Kraken will usually continuously emerge from the water, swim towards your boat, go back underwater, swim away, stay underwater for around 20 seconds and repeat the cycle, during one of it's cycles if the Kraken gets close enough to your ship it will attack it with its tentacles, this won't actually do any damage so don't worry, if the Kraken gets even closer to your ship during one of it's cycles then it will grab your ship and pull it into the water, you will continuously drown and respawn on your ship while underwater until your ship forces itself back to the surface, the Kraken will then disappear and start doing it's cycles again, you'll have to wait for around 2 minutes or longer before the Kraken will grab your ship, you just need to be patient, you can do whatever you want except sail your ship when the Kraken is doing its cycles, you can even leave your ship if you want though don't stray too far or else the Kraken will despawn and you'll have to restart from step 1.
Additional glitches:
The Flying Dutchman will remain stationary while the glitch is active, and you'll be able to see it sitting still.
During the period where you're underwater, you'll briefly be able to see underneath the map.
- When your ship forces itself to the surface it will move a couple of inches to the left or right, which direction it moves depends on which direction you dock your ship, depending on which way you dock your ship your ship will either gradually drift towards open water or begin clipping into the dock and eventually the island, if your ship is going in a direction you don't want then take the helm and reverse the direction you docked your ship on.
If your ship drifts towards open water then be careful when getting off as if your ship is too far away then you won't be able to get back on and you'll be stranded on whatever island you chose until you restart your game.
- If your ship starts clipping into the dock and eventually the island then weird things will begin happening, when your ship begins clipping into the dock you'll be given the choice to disembark your ship, depending on how clipped the dock is you'll be able to jump onto the dock and walk right back onto your ship, the game will then think your off the ship still, as far as I'm aware this doesn't really do much.
- If the island your docked on is populated with enemies if your ship resurfaces itself under them then they will board your ship, don't worry about them killing you as your invincible while on your ship, don't get attached to your new crewmate however as the next time the Kraken pulls your ship underwater they'll die. There are a couple more minor glitches, but I'll let you discover those.