Can't argue with that. Like I said, I've got no proof, but I've learned to listen to my belly.
Just out of curiosity, 100 ton, 100 mi?
Don't understand the question, but I've delivered, crewed, or fished on yachts up to 75'. The heaviest was a small tuna seiner converted into a mothership for a sportfisher. I think that's what you are asking.