4 days ago I started making a Pirate game. Here are some things I made for it.
Realistic Ragdoll and Ship Destruction
Ragdoll not only ragdolls on death, but also applies force to the dead body. The force is applied to the body part that was recently hit, and in a direction that it was hit.
Ship Control
Works like an actual ship. To move it you need to open the sails. The more sails you open, faster it goes. Also the wave wobbling is not random, it takes into account the actual waves underneath it.
Realistic Waves and Rowboat
This showcases wave wobbling mechanic better. It calculates the height of waves at crucial points on the boat, take their average, and makes the wobbling based on that.