For buildings of the same name in other Tropico games, see Dock.
Docks are infrastructure buildings in Tropico 3 and Tropico 4. Docks are used to transport goods and people to and from the island via freighter. Because docks are so vital to the economy, every island starts with one and can never have any less than that.
When products are made for export on the island, teamsters will gather them and transport them to a dock. Every 6 months, a freighter will arrive at a dock. When one does, the workers for that dock will head there and begin loading the exported products onto the ship and unloading any imported products off. Teamsters will then transport the imported products to where they need to be. Once this is completed, the freighter leaves. The total cost of the imported goods will then be deducted from the treasury and the total price of the exported goods will be added. By default, docks will only allow up to $5,000 of imported goods per freighter, to keep Tropico from spending too much on imports. The maximum cost of imported goods a dock allows can be changed by a slider.
In addition to goods, freighters are also used to transport immigrants and hired foreigners to Tropico and to allow angry citizens to emigrate from Tropico.