Twenty, from Bergen. One borrowed sloop.
1672. You are Captain Hald, twenty years old, from Bergen, with a borrowed sloop called Ternen, thirty men and a Danish-Norwegian letter of passage. Lord Ambrose Grey, the Grey Admiral, took the family ship off St. Thomas and sold the Halds across the islands: your mother Maren, your sister Sigrid, uncle Brage and old grandfather Eilif. Spain, England, France and the Dutch are at each other's throats. You start at Taphus, the free port.
Then nothing tells you what to do. Trade sugar and spice between real ports, carry a governor's letters, hunt the eight rival captains, dig for treasure, take a galleon from the silver fleet, or turn pirate and sack Cartagena. Every choice adds to the same life, and the days keep passing while you decide.