I am trying to make a game based off similar mechanics to tanks the wii game but based on a planet with boats traversing the water. I am trying to figure out how to make the boat rotate around the planet as if it were actually on it, similar to Super Stardus HD. Here is a pic of my planet:
A simple way is to use a springarm, with origin at the planet core, and attach the boats to the end of it.
Or check this tutorial: https://www.youtube.com/watch?v=64Q80zS88aY for something better.