tag:blogger.com,1999:blog-994070224761667321.post5983466353736398199..comments2024-03-28T19:22:15.683+00:00Comments on Interesting Sailboats: PLEASE, A RCD CERTIFICATION FOR BLUEWATER SAILING BOATS!Paulohttp://www.blogger.com/profile/14910018730823789405noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-994070224761667321.post-28657861790394821282023-09-20T20:16:27.288+01:002023-09-20T20:16:27.288+01:00Most of the time when a boat is rolled the mast br...Most of the time when a boat is rolled the mast breaks, so a buoyancy device on top of the mast will only serve to increase the risk of mast breaking when a boat is rolled.<br /><br />If we are not taking about a boat rolled but capsized to 90 degrees and taking too much time to right itself up, increasing dramatically the risk of being rolled by the next wave, then the buoyancy device serves noPaulohttps://www.blogger.com/profile/14910018730823789405noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-62274477951472704812023-09-11T13:56:22.514+01:002023-09-11T13:56:22.514+01:00Hi Paulo,
since the majority of boats are just bar...Hi Paulo,<br />since the majority of boats are just barely A rated, and honestly I don't see how that is going to change.. then how do you feel about installing CO2 charged buoyancy device somewhere near the top of the mast that would activate automatically in the event of the capsize. This would greatly diminish negative stability on any cruising sailboat.nikolarhttps://www.blogger.com/profile/16047603298236829792noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-68679190894753498732019-12-08T01:45:46.593+00:002019-12-08T01:45:46.593+00:00Hi!
AVS is not a static number and it means Angle...Hi!<br /><br />AVS is not a static number and it means Angle of Vanishing Stability, the angle at which a boat will not recover from a capsize and will stay inverted. It does not happen only on the paper but on the water too and when it happens the situation is very dynamic LOL<br /><br />As I said in the post, before the RCD was created, on the preliminary discussions, that joined many naval Paulohttps://www.blogger.com/profile/14910018730823789405noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-40702385436951222712019-12-07T20:34:49.315+00:002019-12-07T20:34:49.315+00:00Hi Paulo,
Thank you for your brilliant site, I ap...Hi Paulo,<br /><br />Thank you for your brilliant site, I appreciate your commentary very much. <br /><br />This post gives me a little heartburn however. AVS is a static number that feels too simplistic for the highly dynamic situations we encounter in a storm at sea. It says nothing about moment of intertia, lateral keel resistance, how the vessel is typically loaded, risk of pitchpoling or Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-31883611631576946752019-06-23T10:17:44.809+01:002019-06-23T10:17:44.809+01:00Many thanks for this post.
Your blog is one of the...Many thanks for this post.<br />Your blog is one of the rare voices saying how things are going on in the world of yachting. Filippohttps://www.blogger.com/profile/17118290247528598322noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-67928776179325469282019-05-29T11:01:10.096+01:002019-05-29T11:01:10.096+01:00Thank you!Thank you!Haldhttps://www.blogger.com/profile/09228139646881629912noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-3913346876229365652019-05-25T22:10:17.636+01:002019-05-25T22:10:17.636+01:00Yes, it is true that a centerboarder will have les...Yes, it is true that a centerboarder will have less tendency to trip over the small area of the centerboard (if down) than boats with keels with a considerable wet area.<br /><br /> Centerboarders and boats with a foil and a torpedo keel will convert most of the energy of a breaking wave on sliding movement over the water while a full keel boat will have almost all the energy converted on a Paulohttps://www.blogger.com/profile/14910018730823789405noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-29877456392612188982019-05-21T20:26:33.259+01:002019-05-21T20:26:33.259+01:00Great analysis and important discussion. It is ind...Great analysis and important discussion. It is indeed strange that practically all bigger boats get af Class A certification.<br /><br />There is something i do not quite understand. The french bluewater sailors are very happy with centerboard boats. How is the stability margins and AVS in such boats? Their B/D Ratio is commonly around 30-35% but the CG must still be higher than a traditional Haldhttps://www.blogger.com/profile/09228139646881629912noreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-65095370325221946282019-05-15T22:20:28.206+01:002019-05-15T22:20:28.206+01:00Very interesting read, thanks!Very interesting read, thanks!Leifhttp://none.comnoreply@blogger.comtag:blogger.com,1999:blog-994070224761667321.post-65040201603787286962019-05-12T21:59:54.971+01:002019-05-12T21:59:54.971+01:00Its like spending money on a granite countertop in...Its like spending money on a granite countertop instead of insulation. I know nothing about sailing, however your point is so clear it makes me think of Boeing.Stevehttps://www.blogger.com/profile/14162783936999869984noreply@blogger.com