on the op of the island, there is a cannon starter kit above the pirates den. collect that, go down to another cannon and find barrel that says "DANGER, EXPLOSIVES." push it all the way under the golden tooth on the skull. Then click on the lowest cannon that will shoot the explosives which will blow up the tooth reveling the part of the map.
it is not possible
You go to the dragon cove on the higher left of the map!!
At Dragon Cove, push the old man to the right, near the barrel. Then use the mallet to ring the gong, which will scare a fish out to him. The map piece is inside it.
you are able to buy them at dragon cove (the top left corner on the map)
a map piece
you get the stick but then move the old guy to the left he'll catch a fish then he gives you it because he finds it in the fish's mouth
At Dragon Cove, the statue is down in the water under the Trading Post. There is an old fisherman there who can help you find the Map Piece. (see related question)
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on the map next to the cove there is a piece of ice press that and you are there
You arrive at Fort Ridley, the Main Street island. Above are Dragon Cove and Bouffant Bay. To the right is Parrot Port. At the bottom left and right are Pirate Outpost and Golden Harbor. Once you have collected a map piece from each of the 5 islands, the 6th outlying island (Skullduggery) will appear near the Pirate Outpost.
At Dragon Cove island, the old man will help you get the Map Piece. Climb onto the floating statue and you will reveal a Mallet. Push the old man to the right, past the giant Bell Gong to around the first barrel. Then strike the Bell Gong with the mallet. This will scare the fish from the water and he will catch one, and the Map Piece is in its mouth.
for the ship you go to dragon cove and head to the place with the sign that has the guy carrying a wagon and for the crew, they are spread out throughout the whole map