Here is an idea to see an island or cave or combo for a boss fight or even a SOTD pirate cove or base of some sort that you need to drive your ship which could be class driven for difficulty level with obstacles to avoid. To avoid clustering of ships maybe a sea monster that will attack ships and deep enough so ships can sink out of the way. And some low depth areas that have monsters or SOTD operated canon turrets that can be destroyed that will attack ships if they stay too long so people can't block it. Which can be demoed by others trying it.
Rewards can can be ship skins or even a new ship BP, gold, ammo, weapons & armor BP's, better sail BP's and etc.
