Final Fantasy II/Mission to the Dreadnought

Reaching Kashuan
To reach Kashuan from Salamand, you have two choices. If you wish to walk, head east and then south to return to Bafsk. From Bafsk, you must go south and the east between the coast above and the mountain range below, until you find a break in the range. The Keep is in the center of the mountain range, so you much head south west until it comes into view. The alternative is to return to Poft, and hire Cid's airship to fly you to Kashuan, where it will drop you directly in front of the keep.

Kashuan Keep
As you enter the courtyard of the Keep, you will see the Sunfire sitting in plain view. But you don't have the item necessary to transport it anywhere, Egil's Torch. Just about the flame is a door that appears to be locked. Use the Goddess Bell in front of this door, and the seal will break.

Climb the stairs beyond the door, and you will run into Gordon. Unable to completely recall the layout of the Keep, but determined to help any way he can, he joins your party.

Get all the treasures in this map and finally the Egil's Torch. After retrieving the Egil's Torch, exit to 1F and use the torch on the Sunfire. The Sunfire will be transferred on Egil's Torch. Exit the Keep and you will see Cid's airship get captured by Dreadnought.

Dreadnought
Head back to the Altair and speak to everyone in the room. You will find out that Princess Hilda and Cid have been captured by the Dreadnought, but it requires replenishment and the replenishment location is to the Northwest of Altair. Head Northwest and enter Dreadnought. Go through the map to find Cid and Princess Hilda. Cid will tell you to throw the Sunfire into the engine. Go to the 5F which is the engine room to throw the Sunfire into the engine. A Dark Knight will appear and ask what have you done to the engine. Maria will recognize the voice but there is no time to talk here as the ship is about to blow. Your party will auto exit the Dreadnought and head back to Altair.

Go into the King's room and you will find that the King is about to die. Before you do so, unequip Gordon's items as he will leave you after this section. The King will ask Gordon to take lead of his army. He asks of Minwu to break the seal binding the Ultima Tome. He asks Firion to head to Deist, home of the Dragoons, to search for last standing Dragoons and their Wyverns. Lastly, he asks that you all take care of Princess Hilda. After which, he leaves the world. Gordon and Minwu leaves the room to handle their tasks and you are back to 3 party members again.