Quote Originally Posted by Moby Duck View Post
One of the ways to ease sea sickness is to stand on the upper deck and focus on the horizon. In the 1970’s there were experiments done where horizontal stabilised laser beams were projected onto all bulkheads in operations rooms and mess decks. I believe that the Royal Canadian Navy might have done some these experiments. The theory was that the eye would automatically pick up this artificial horizon, the brain would have something fixed to relate to, and sea sickness would be eliminated. I understand that it worked well, but I have never heard of it being fitted as standard equipment in ships anywhere. Looking at a horizontal, stabilised gun barrel would presumably have a similar effect. However if the barrel was elevated to say 40 degrees, that might make things even worse as Marv and Frank can attest to.
Of course the only real way to prevent sea sickness that is 100% reliable for everyone, is to stand under a tree.
Staring at the horizon works for me if I stand near the ship's rail and look out so I can't see any part of the ship rotating relative to the horizon.

It was almost impossible to watch the gun barrels from the bridge without having the ship's bow as background. This meant I saw the ship appear to rotate around the gun barrels. The effect is almost instantly sickening, at least it was for me.