Thanks for the feedback! Do you mean hardware acceleration in the browser? I'd be interested to know more about that as I really liked being able to publish the game to WebGL (my first time using WebGL in the browser) and I'd like to do more of that.
I have also noticed the ships flying off the surface when they hit the serpent or a low piece of land. That whole mechanic was kinda rushed so and I think the colliders are messing with my spherical gravity code. I've already done some retooling and I'll keep working on it. No Flying Dutchman in my game :-) Thanks again for the detailed write-up.