Halyard Stay
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In the July/August 2003 issue of Ocean Navigator there was an article on storm sails. In the article Dan Neri of North Sails (Portsmouth, RI) describes a set-up that sets a hanked storm sail on a length of high-modulus line like 12-plait spectra or Deyneema-core (e.g. Samson AmSteel-Blue). The storm sail has a high modulus luff rope as well. The rope stay is raised on a low stretch halyard and the storm sail is hanked to it and raised on another halyard. A variation might be to have a block at the head of the rope stay and raise it with the second halyard threaded.

On my 10M I have two jib halyards. The starboard one is StaSet-X runs internal. I use it to raise the roller furling jib (in the starboard groove of the headfoil). The port jib halyard is external (so it can serve as a backup to the main). This line is 1/2" Samson XLS-900 (it is strong enough to lift the boat) and would be idea to raise the halyard stay with it's own halyard (lets call it the sub-halyard) for the storm sail.

To set the rope stay and the sub halyard I would need either two winches or a set of stoppers on the mast (or cabin top if lines are run aft). The stoppers might be a good way to go. If there were two above the winch I could use them for the port and starboard jib halyard, freeing the winch for the sub halyard. I would keep the horn cleats in place to double secure the jib halyards below the stoppers. For stoppers I would go with Lewmar because they don't chew on the rope and they can be released gradually.

The stoppers are about 3-1/2" tall. I was thinking I could fabricate a T-shaped mounting bracket that would lay them on their sides on the side of the mast, one facing forward the other aft. The top of the T would be curved to match the mast curve or it would be mounted on a wedge. This stopper part might be good by itself. Then my one halyard winch would be usable by more than one line.

This is just an idea right now.

PDF drawing of halyard stay concept