A good idea would be a pirate ship war. No not the pirate war mod with only 1 ship, a thing where you build a ship using the PHX3 Wood and various others. Then use the prop cannon to make cannons.
Naval battle has its servers on sale.
Its 3 teams, english, french, and pirates.
You can build ships, fight, or gather oil.
Gathering oil is the only way to earn money though, and you need money for ammo, guns, and cannons.
Also, theres only one oil rig.