And it will be able to build only fishing boats at first. But at least you'll be able to upgrade from throwing fishing rods into the sea.
After the first upgrade, you can build merchant ships, and this will open trade to outside your guild (guild should be called archipelago but that's another subject)
After the second upgrade you'll be able to transport troops and with that you can start playing adventures
After the third upgrade, you can build warships, and that's when the fun really starts. Because these warships can be used to... Hey use your imagination ! ! !