A player will trade 20 of their selected resource for 20 Gold at any allied, neutral or enemy dock. The default resource is wood, which you can change at any time. The boat will take from the Dock's inventory. The inventory slowly increases to a limit of 100. If there is less than , the Trade Boat will have to wait for the Dock to produce more. When the Trade Boat returns to its home Dock it will deposit the Gold, and you will receive an amount based on the distance between the two docks. The bottom number out of 20 is the amount of Gold you will receive for your resources, ranging from 7 to 75.