Ports are foreign cities around the world in Maritime Kingdom. The player can sell Trade Goods at Ports by sending Ships to them. Ports can become hostile if the player hasn't traded with them in a while. Hostile Ports require the player's Ships to be escorted by Troops.
Trade at Ports is affected by a number of factors:
- Demand - Ports desire a specific Trade Good at any one time, and the Trade Good desired changes over time.
- Port limit - Ports can only handle a certain level of traffic at one time, and how many Ships you can send varies over time, from a minimum of one to a maximum of four.
- Cost - You will always need multiples of 80 of the desired Trade Good, depending on the Port limit, in addition to Food used during the expedition and sometimes Troops, depending on your Reputation.
- Reputation - The less you trade with a particular Port, the lower your Reputation in that Port becomes, requiring you to send Troops to protect your Ships. There are five levels of the Reputation system: green, light green, yellow, orange, and red. Only green allows you to trade without sending Troops.
- Distance - The further away a Port is, the bigger the Ship you'll need, the more Food you'll have to spend, the more time you'll have to wait, and the more Profit you'll gain.
- Profit - Although trade seems like a costly and time-consuming endeavor, you receive a large sum of Gold and points towards your Player level. Trade is the most effective way to finance your expansion.