Stumbled over this gem in French. Most of you know this stuff of course, but I think the important points are very well explained. You can skip the last 5 minutes.
Cue the comments about the TS/ORC probably being the most capsized big multi of the last decade
Dang, more impressive than the capsize was the righting!!!!!well if you are sailing at say 90 twa at 20kn in 20kn of wind your APA is roughly 45.
However if you are only doing 10kn in 20kn then APA will be roughly 75. Still dangerous because sails may be luffing etc.
As a matter of interest we capsized our 50' cat on heady alone in a 42kn gust. Went to bear away through the zone mentioned above and jib sheet was not eased enough. When I felt the boat start to lift the jib was pulling the bows down preventing a fast luff back up and over she went sideways. We had her back upright in 2 hours with no damage but I still would not want to ever do it again.
My understanding (which may be flawed) is that the headsail is the dangerous one when you’re above the dreaded wind angles, because it can pull you down and power you up when you’re trying to luff to depower.The main takeaway IMHO is the dangerous sail is the one up front. Taking the pressure off that sail allows you to bear off with speed.........
I think much depends on the boat.My understanding (which may be flawed) is that the headsail is the dangerous one when you’re above the dreaded wind angles, because it can pull you down and power you up when you’re trying to luff to depower.
But once you’re below the dreaded wind angles the mainsail is the one to fear, because it’s the one that will push you over and/or head you up when you’re trying to bear away. So we’ve always reefed the main first when heading downwind TWA (which may actually be upwind AWA) in a breeze because then you can dump the headsail sheets to depower when the main can’t be eased any more.
Or do I have it all wrong here?