Sea has limited functionality in the early game, as the only building available from the start is the fishers hut. From this building, a fisher can catch fish from the sea, with varying rates depending on the weather. Fishing is possible during all seasons and can yield a great nutrition output early on.
Once the boat building research has been completed, it is possible to build cheap but small boats and send them on missions like fishing, collecting treasure, gathering cartography data to craft star maps, preparing expeditions to discover and take distant land using those maps and plundering/conquering enemy land with your army by sea. Later researches unlock bigger and more expensive ships that are much better suited for goods/army transport and can attack pirates.
| Building | Description | Cost | Time to Generate (days) |
|---|---|---|---|
| Fishers hut | Catch fish from sea or produce fish food | 5 land, 10 logs, 5 planks, 1 copper | 2 |
| Pier | Provides limited docking space for ships | 25 land, 30 logs, 20 planks, 20 copper | |
| Boat builder | Can craft small boats | 20 land, 30 logs, 10 planks, 20 cut stones, 10 hammers | |
| Harbour | Provides large docking space for ships | 200 land, 30 logs, 20 planks, 50 cut stones, 20 bronze, 20 iron | |
| Shipyard | Can craft all ships, uses up to 10 villagers | 50 land, 100 logs, 50 planks, 20 hammers, 50 bricks | |
| Cartographer | Produces maps from cartography data gathered by ships | 10 land, 20 logs, 10 planks, 50 paper |