Cheers to you Corno,
I'm afraid I, too would become ill on a sailboat or even a cat. I haven't ever had a problem in a large vessel (even while cruising through a hurricane) but the bobbing and weaving about makes me sea-sick just thinking about it.
Perhaps one day I'll take a voyage on a clipper and see how that goes. Also, since I am so paranoid about the water I have misgivings about sailing. When I see those things tipping on the waves it really gives me the "willies." Actually, taking into consideration my fear of the water it is really amazing that I have been on about 16 cruises and loved every one of them.
It's not so much the water that scares me, rather it's what's in the water that I fear the most. My diver friends have tried to get me to go on trips with them and perhaps one day I'll take them up on it. At least in their company I would not have too many worries as they have been diving all their lives. Most of them are master divers. In fact, one of them invented the Padi wheel. (I hope i got the acronym right).
All in all, I think the water is beautiful to behold. I really give credit to all of the early explorers.