Docks serve for both economy and naval warfare as they produce all kinds of vessels while also being a drop site for the Fishing Ships and Trade Cogs. They must be used depending the kind of map of the game. When playing on maps like Archipelago and Islands it is absolutely necessary to build Docks and give them an extensive use since most of the action will occur on the seas. It is recommended to build at least one (preferably two) Docks in the Dark Age already in order to boost the economy with the production of Fishing Ships.