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ATN Spinnaker Sleeve
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- The ATN SS55 Spinnaker Sleeve lets you raise and douse a spinnaker with ease
- Single-hand any spinnaker, reacher, gennaker, MPS, screecher or mizzen staysail up to 15,000 sq. ft. (Mega sloop Frers/Huisman 156' Hyperion)
- The Body of the SS55 spinnaker sleeve is manufactured with polyester mesh
- The Hoop ( rigid opening) is manufactured with Kevlar + Carbon fiber + fiberglass
- The high-tech, light weight Hoop matches shape of the spinnaker and will not warp under load
- Single control line led through separate sleeve eliminates fouling
- Contrasting visual reference stripe
- Wire pennant with swivel at head of spinnaker prevents sleeve from affecting sail shape by allowing the sleeve to accumulate on the pennant
- Mesh construction allows sail to breathe, so that sails dry quicker, even while stored
Ordering Information: To select sock size simply determine your sail's leech stay length. Use that length if the sail is either an asymmetrical (a cruising spinnaker) or a symmetrical (regular spinnaker). Body of sock is white. The strip (pocket) color is gray.
Note: This is a Semi Custom Product and Must be Produced when Ordered. No Rush Orders Available
Problems Solved by the ATN Spinnaker Sleeve
The main problem to solve was the mixing of the control lines and the sail.
A separate channel (which contains the control line) is sewn alongside the main sleeve which contains the spinnaker. The spinnaker and the control lines are completely separated. The separate channel (side sleeve) is made of a different colored cloth than the main sleeve which shows the eventual twists of the sleeve prior to hoisting it. There will often be some twists in the sleeved spinnaker as it comes out of the bag, especially after long periods of storing and moving it around the sail locker. Needless to say, those twists are to be removed before hoisting the sleeve.
Another problem to address was the opening, or mouth, of the sleeve.
It had to be rigid to remain open when pulled against the sail, slippery to enable it to slide over the sail without chafing it, light (weight aloft should always be avoided) and sturdy enough not to break in the bag when stepped on or stored. Fiberglass was, from the beginning, the material of choice due to its versatility and ease of manufacturing. While the round shape seems obvious, the oval shape is more spinnaker-friendly. It doesn't have the tendency to rotate around the sail, as it is guided by the spinnaker leeches and it is easier to slide through the hatch when storing below deck. We make them out of Kevlar and glass which, while expensive, offers a good combination of strength and lightness.
The control line is a closed loop, made of 2 different lines. One side is to hoist the sleeve. It must not kink and it should be small enough to travel in the side sleeve and through the top turning block. The other side must be much heavier as it is handled by the operator to douse the sail. It also must not kink as well as be long enough to be lead through a snatch-block, in the foredeck and then to a cleat or a winch on bigger boats.
The cloth problem came from the fact that spinnaker or bag cloth doesn't breathe and might bleed.
The cloth that is milled especially for ATN is a "tricot", a mesh like material which is light, strong, and doesn't retain water. The sail can dry when in the sleeve and it will not cling to the sail when hoisting the sleeve, even after long period of wet storing.
Finally, the spinnaker is fastened inside the spinnaker sleeve with a swivel shackle to allow jibing.
The hoisted spinnaker sleeve must always remain in the same position at the mast head, on top of the flying spinnaker, while allowing the spinnaker to rotate under itself. This also gives more flexibility when loading the sail.