Originally Posted by AndyBerry
Great answer. Thank you. Could I get you also to respond on the different techniques of setting and dousing these sails. You mentioned top down furler. How else are they deployed? Thanks again.
There are four options...
1) hoist and douse like a racing
crew, this is an unbanded sail with nothing to contain it. Unless you are racing
this is silly
2) Sock - this is a fabric
tube that is attached to the top of the sail. First you hoist the sail in the tube, then pull the sock up. It's the traditional way to contain spinnakers.
I see a nice video showing how they are used with a tracker (the piece that slides over the headsail.
3) Code furler (tight luff furler) - basically a torsion rope
I see sewn into the luff of the sail, and when you furl it the sail wraps around the rope
and itself. For those sails that are candidates this is a great option, but it heavily restricts the luff curve of the sail. It has to be a flat/flatish sail with a minimal shoulder to work.
This is with a Code1, but the C0 is exactly the same.
As compared to the sock, the sail curls tighter, and can be left up sort of. For a few hours say during overnight in moderate conditions but where you don't want to take the sail down you could leave it up... but the roll isn't as reliable as a furled headsail, so in a blow it needs to be taken down, and at least bungled in place on the deck
4) Top down furler - This is the newest of the bunch, it is similar to the tight luff furler, but the torsion line isn't sewn into the luff, as the torsion line spins it causes the top of the sail to wrap around the line first. Getting these set to the right tension (halyard tension) can be a bit tricky, but can be indexed.
The major difference is that these can be used with any asymetric sail. So an A2 runner up to a Code0 can all use the same hardware
, you just need separate torsion lines for each sail.
Like with the Code furlers the sail can be left up tentatively, but needs to be dropped for long term.