Harbors in Claiming Cosmos spawn Warships, Marauders, and Tenders on planet lakes and run trade ships for gold.
A Harbor is a mouth on wet ground. Feed it and it spits hulls into the lakes. Starports own the void; Harbors own the blue.
Build near lake or ocean water on a planet. Spawns Warships, Marauders, and Tenders. Auto trade between harbors for gold unless trade is stopped. Ships can destroy a Harbor; it does not heal. Cost shares a scaling bucket with Factories.
Back to the building list or pick a map like Sol System and play Claiming Cosmos in the browser.