At the risk of being picky..... 8<)
On boats (subs for you surface type swimmers!) the pointy end of a boat IS the stern.
The rounded end IS the bow.
Starboard side is a derivative of the medieval term "steerboard" side - because the old tillers (before rudders were invented) were mounted to the right hand side of the ship - right hand defined, as you pointed out, looking forward.
through most of history (past the Napoleonic times, the opposite was the "larboard" side, but it became "port" side to reduce confusion in storms between "larboard + starboard" when giving voice orders.
As I remember they did not change the way the wheel was rigged until about the 1920's right?
I had a Great Uncle that had said that when he was in the RN in WW1, the ships used the tiller method.
Picky. Picky. Picky. It took a lot of concentration to be sure that I used the proper term boat instead of ship. :=)