You Have to be on the emerald ocean, once you are. Do /tip Amatorio (the amount of dubs). You're doubloons will be doubled instantly. You can only do this in emerald ocean as of the advantages. You can do this as much as you want - ENJOY!
You can get doubloons by sinking other ships, monsters and by selling cargo.
keep trading
the cannoneer is 20,000 doubloons.
you have to get doubloons by trading grain silk medicine and spice (go around all of the islands on skullduggery)
Earn 500,000 doubloons then get a loan at Golden Harbor at the bank .Or you can as many as Grains as you can then sell it at Pirate Outpost until you get 1,000,000 doubloons.
it costs 20,000 doubloons
It takes approximately 25-100 "days." Everytime you land is counted as a "day" in Skullduggery Island.
All you do there is to hire the Cargo Master, when you can afford him (salary 15,000 doubloons).
"Cash" on Skullduggery Island is your doubloon count. You earn doubloons by salvage or by trading, and you can borrow some from the Golden Harbor bank. When you buy cargo, you spend your cash, and when you sell it, you make a profit. If your ship is sunk, you lose aprt of your doubloons and part of your cargo. You need doubloons to buy larger ships and hire skilled crewmen. (see related question)
You get a larger ship by having a lot of doubloons and then go to dragon cove and buy and new ship. Hint the cheapest ship is 3000 doubloons and the most expensive is more than 30000 doubloons.
When you have enough doubloons, from salvage or trade, you can buy a larger ship at the Shipbuilder on Dragon Cove.
Usually Parrot Port, for between 32 and 40 doubloons.