Ed, you got me reflecting on our experiences with seasickness, well sort of. Neither Jill nor I have been seasick, but we've been tossed around often enough and severly enough that heading out into rough seas does affect our heads. We find that heading off-shore is a big psychological thing for us.One thing that we do, when planning to head off-shore in anything other than mild seas, is that, if given a choice, we spend a few days prepping our heads. That helps, but we still do not lilke being rolled around, though we still subject ourselves to it if we must. Good luck and don't let those stomach roll bother you too much.. Rudy (and Jill) Jacksonville, Fl Briney Bug- a 34 foot sail-assisted trawler 850-832-7748 -------------------------------------------- On Wed, 6/10/15, edmond badham via Trawlers-and-Trawlering <trawlers@lists.trawlering.com> wrote: Subject: T&T: Roll period To: trawlers@lists.trawlering.com Date: Wednesday, June 10, 2015, 6:48 AM Thanks Rudy, you are right. According to Gerr's rule of thumb the best roll period is the beam in meters as seconds from full over one side to the other and back. My boat being 15 feet beam would have an optimum roll period of 4.6 seconds. I estimate the roll period last week was around 2.5 to 3 seconds. Edmond Badham COSMO Wilmington, NC _______________________________________________ http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com To unsubscribe or modify your subscription options (get password, change email address, etc) go to: http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com Trawlers & Trawlering and T&T are trademarks of Water World Productions. Unauthorized use is prohibited.