Originally Posted by MarkJ
My way any uncontrolled gybe would be safe and then the thin line breaks.
Somehow, this statement seems self-contradictory. If the thin line breaks in an accidental gybe, the boom comes crashing across just as if not prevented at all... maybe even more vigorously, it having been delayed slightly and thus with even more wind
But, the point about being able to release the preventer under severe load is a good one. And the cam cleat is a poor choice for that reason: once loaded up they are very difficult to release. I once experienced an accidental gybe just under the Golden Gate Bridge with just that sort of setup and was held down, spinnaker
and spreaders awash, for what seemed like a week or two. Eventually a lull allowed me to uncleat the line and she popped back up, but I was **** scared for a while (this in a single-handed race
, sailing a Yankee-30).
On Insatiable II we have permanent vang/preventers rigged. They cosist of three part tackles led from about mid-boom to a point just aft of the chainplates, and thence to the cockpit
where they pass through a rope clutch and thence to a secondary winch
. They act as quite powerful vangs, and we use them whenever the sheets
are eased a bit. When we gybe (on purpose) we use the wraps on the winch
to ease the sail across, giving good control. The risk of burying the boom and thus breaking it is real, but pretty small IMO and in our fairly long experience. When conditions are severe enough to cause such a big roll, we will likely have one or more reefs
set. We had the reef cringles set so that the boom is kicked up quite a bit, reducing the odds even more. To me, the risk of boom breakage is less important than the risk of injury in an unplanned gybe.
Jim and Ann s/v Insatiable II lying Lake Macquarie, NSW, Oz