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
nowhere your crew is already on your ship
Just dock in an island and your ship (or raft) will fully heal.
In Skullduggery Island, if you have a certain ship and are on a certain island, you can stand on the dock below a crew member and he or she might appear to be standing on your head or shoulders.
You go into any harbor.
The cannons on your ship!
No. To sail a ship, go to Skullduggery Island.
You can trade your ship in when you buy a larger one.
you have to get doubloons by trading grain silk medicine and spice (go around all of the islands on skullduggery)
You repair your ship by pulling into any harbor. You can upgrade your ship at the ship builder's at Dragon Cove.
No particular reason, same with the cabin boy. He's just there.
Once you have all five pieces of the Treasure Map, the 6th island, Skullduggery, appears on the map. When you acquire a powerful ship, and scare off Captain Crawfish, the Governor will give you the Treasure location and a bone shovel to dig it up. (see related question)
you dive to were your ship(raft)is and you swim till you get to sand