Sail the seven seas with Krew. You start with but a raft, but work your way up to have the biggest warship on the ocean, or - better yet - krew up with someone who already does.
Steering your ship in Krew can be a little tricky. It's best to look at it as two separate things that you control: the player, and the ship. Fire your cannons with the left mouse button, and move (your character) around with WASD. By hugging a side of your ship, you'll steer in that direction. Your cannon is affixed to your character, so by moving around on your ship, you can vastly change its trajectory.
Krewing up is certainly the best strategy, but if you want to go-it alone, then there are plenty ways to earn gold around the map by collecting salvage and saving up for a spanking new ship.