Sink the Regnan fleet is a main quest in Might and Magic VIII: Day of the Destroyer.
Immediately after meeting in the council chambers in Ravenshore, the newly formed alliance decides that the first thing which needs to be done is to stop the Regnan pirates. They ask the Hero of Jadame to travel to Regna Island and sink the Regnan fleet..
Walkthrough[]
The party must travel to the Pirate outpost in the Dagger Wound Islands in order to get passage to Regna Island. Note that the Pirate outpost will not appear until the party has been given the quest to Sink the Regnan fleet. After navigating through the structure, which is full of Regnan pirates and Pirate wizards, they will come to a conference room containing Blackwell Cooper. He must be killed to obtain a key. The key will open the door to the submarine pen (the locked door is in the conference room). Clicking on the top of the submarine within will ferry the party to Regna Island instantly.)
The Regnan fleet is anchored off the outer coast of the largest island (not the island with the town Harecksburg). High on the mountain the Cannon of Dominion is conveniently pointed at the fleet, however before using it, the party will need to find the ammunition. The Cannonball of Dominion is inside the Abandoned pirate keep next to the cannon, but the structure can only be accessed initially by traversing the Pirate stronghold in Harecksburg. The Passage under Regna to the Abandoned pirate keep is on the lower level of the Pirate stronghold, behind a secret door at the end of a corridor. The Pirate Stronghold is full of Regnan pirates, Regnan lieutenants, and Mercenaries. Inside the Passage under Regna are more Regnan pirates, Ogre warriors, and Regnan battlemages.
Once inside the Abandoned pirate keep, the party should navigate to a room with a balcony. At the top of the stairs to the balcony is a chest containing the cannonball (Master Disarm level 8). With the cannonball in inventory, the party may return to the cannon (no need to go back through a tunnel; the door to the Abandoned pirate keep will open from the inside, and thereafter be unlocked from outside also). Clicking on the cannon (while the cannonball is in inventory) will fire it, sinking the fleet. Patrolling the inside of the Abandoned pirate keep are Regnan pirates, Regnan battlemages, and Ogre mages.
Once the party has sunk the fleet, they can travel back to the council in Ravenshore to complete the quest.