Buying and Selling Land!
Welcome to the wonderful world of real estate. It's in a real state. (haha. O.o)
New land is generated when a ship raids. The land is then put on the market for 100G/acre (the profits of which go back to the ship's officers). Put in how many acres you want to buy from each seller.
To sell land, you put in how much you want to sell, and how much you want to sell it for. Wooho. then it goes up, and when it's sold, you get all the profit.