Just another Moderator
Join Date: Sep 2005
Location: New Westminster, BC
Thanked 327 Times in 311 Posts
Rep Power: 10
Setting up your shrouds on a nice 10 knot day works well... but you should only adjust a shroud that's not loaded.
So you need to set up on a particular tack, observe the mast and determine if it's sagging at the spreaders or falling off above.. mid mast sag means your lowers are loose, the top falling off may mean the cap shrouds should come in or, possibly the lower is too tight, pulling the mid mast to windward. In any event decide which shroud adjustment is required but don't do it yet..
Now tack to the opposite tack and adjust the shrouds you just checked as you think best. At the same time observe the mast on the new tack and make the same sort of decision. Tack back, observe the effects and maybe make adjustments on the other side at the same time.
You'll need to go back and forth on this until it looks right on both tacks and you leeward shroulds (at 10 knots) are not sloppy. Keep in mind that you want to keep the masthead centered so large adjustments to the cap shrouds may upset your initial setup of that.
Hunter, btw, with their severely swept spreaders may well recommend that the rig be tight enough that the leeward shrouds do not go slack in even the higher wind strengths. I've seen documentation recently from Selden maintaining that with swept spreaders overall rig tension should be higher, and that the lowers or diagonals should be set last and you need to keep in mind that over-tightening lowers/diagonals will straighten the mast, affecting any desired prebend.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)