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Quantum Sail Design Group (QSDG) website at: http://www.quantumsails.com
The new 50,000 square foot plant, (one of the largest sailmaking facilities in the world), is located in Ayer Keroh in the state of Melaka, Malaysia. It’s rapidly expanding work force includes more than 100 employees, with a dozen engineering specialists and technical staff. The Structural Membrane Facility (SMF) produces all Fusion M membranes for more than 60 Quantum sail lofts around the world.
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More Than Meat on the rail... The Fine Art of Crewing Return to AY Homepage
What Weight Means
The magic spot varies, depending on wind velocity, boat speed, sea state, and the need of the helms person. It also reflects the design characteristics of the boat. Most racer/cruisers rides high in the bow, low in the stern, so they always need the weight well forward, (though never forward of the shrouds). This means stay out of the cockpit! It is convenient to think in terms of a diagonal line running from the leeward shrouds, to the weather rail at the back end of the cabin top. In light air, weight should be forward and to leeward. As the breeze builds, weight should shift aft and to weather. Upwind, the crew should react automatically to puffs and lulls, and the needs of the helms person for more or less heel. Create heel in light spots, out of tacks, or in waves. Help the Helms person
This part is painful, but in light, sloppy conditions, upwind and down, it is faster to have the majority of the crew below, with their weight forward and to leeward. The crap shoot nature of light air sailboat races, actually makes this a good deal. Who wants to watch anyway? Besides, it is much more comfortable, and you can have lunch. Movement Kills Speed!
Above all, movement kills speed. If you can get your job done and then freeze in the right spot for the conditions, you will help make the boat go fast. In a perfect world, the crew would be frozen in proper position, explode in one burst of concentrated action to perform the required evolution (set, jibe, douse, etc), and then immediately settle down and freeze. It is essential to settle the boat down after any evolution.
Which leads us to the next important concept: priorities. The more you race, the more you will realize which things have to happen, and which can wait. As you set the spinnaker, for example, is it really important to ease the outhaul, cunningham, and backstay, right now? The answer is no. All that is critical is to get the spinnaker up. the jib 1/2 way down so the spinnaker fills, and the mainsail and spinnaker trimmed properly. It will be better for boat speed to freeze, and attend to the small details of sail trim later, once the boat has settled down.
Have A Plan There are four basic evolutions in sailboat racing: tacks, sets, jibes, and douses. Create a plan for your boat. Define the responsibilities of each position for every evolution. You can work out the details in practice. There is no perfect scheme. Just as great golfers are able to achieve the same results with different swing mechanics, you can get the mechanics of boat handling accomplished with a variety of different plans. Whatever works on your boat, with your crew, is right. No matter what scheme you come up with, the lesson is to have the plan outlined, so that every member of the crew understands his or her responsibilities. When new crew come on board for a race, you can easily plug them in, and define their tasks. Call me if you need a sample plan.
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DK46 ‘Drumstick’ showing off it’s new Quantum A-sail and Fusion M mainsail. (Note the position of the spinnaker pole.)
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Initial Setup
1. Set the sail with 2 sheets on the clew, run aft, as you would with
a conventional spinnaker. They are run OUTSIDE of the headstay, and
the tack of the spinnaker.
2. Attach both guys to the tack of the sail, which also will have a “snout line” or tack downhaul attached to it. These are run aft, as with a symmetrical sail.
3. When sailing, on port gybe, for example, the port guy is run through the end of the pole, which is set in the usual way (with topping lift and foreguy). The foreguy is not necessary except as a backup, since the loads will be on the snout line.
4.
As with a symmetrical sail, the pole is set approximately at right angles
to the apparent wind, or so the luff sets up in a line vertically (with
the pole end directly under the break) under the curl when the sheet
is eased. It will move forward if close reaching, and aft at deeper
angles. The pole height is set to provide an even break along the luff.
The sail should curl at the shoulder (where the head radials meet the
top of the mid-section). If it breaks along it’s whole length
at once, it is too low. It will be lower than when used with conventional
spinnakers, typically just above the bow pulpit when close reaching,
gradually moving up as the pole moves aft at broader angles.
To
gybe:
1. Make sure the sail if fully loaded, and not lacking pressure before
initiating the gybe. Never start a gybe with a collapsed or partially
filled spinnaker. As the boat begins to bear away, simultaneously ease
the guy and transfer the entire load to the snout line. Trip the pole
away from the guy. Disconnect the pole from the mast and shift sides,
clipping the new guy in, or raise the pole and dip the outboard end
as in a conventional dip pole gybe. The snout line controls the tack
of the sail as the pole transfers sides and the new guy is put in.
2.
Bear away smoothly; turning only as fast as the sheet is eased. Ease
the sheet rapidly while it is still loaded, until the clew gets past
the headstay, then release completely. Follow the released sheet to
make sure it runs. Pull on the new sheet only after the clew gets past
the headstay (except to keep slack out). Pull like crazy once the clew
passes the headstay. It will help to have a runner pulling down and
back on the new sheet to assist the trimmer. The driver needs to slow
the turn down (so not stop, however) as the clew passes the headstay
to make sure the sail is unloaded as the clew is pulled to the new side.
Continue turning smoothly up to an angle where the sail will load (usually
a little hotter than the angle you initiated the gybe at), once the
bulk of the sail is past the headstay. When the sail fills, the new
sheet will probably have to be eased well out, since it must be over-trimmed
to fill the sail initially.
3. Take up on the new guy while simultaneously easing the snout line, bringing the pole back to the appropriate angle. Make sure the boat stays well pressured up (sail a little higher angle) to accelerate.
Keith Moore an experienced skipper in Asia adds further comments...
I would emphasize the point that one should ‘load-up’ the sail prior to gybing. This could mean steering up as much as 15 or so degrees in light air before turning back downwind. As the tack moves around the forestay the helmsman should ‘follow’ the sail around and should come out of the gybe substantially higher than the final anticipated heading. The lighter the air, the harder this is to get right, but with some practice a good crew should normally be able to gybe an a-sail as quickly as a ‘normal’ spinnaker.
One
thing that we do differently from the article; rather than connect the
guys and ‘snout line’ directly to the tack of the spinnaker,
we attach them to a stainless ring. We then use a separate clip (preferably
welded directly onto the ring) to attach the ring to the tack of the
spinnaker.
If you are thinking of adding a spinnaker to your inventory for the upcoming Asian season, consider an asymmetrical. Please note that delivery time can take 30 days or more (especially if a logo is involved), so please plan ahead to avoid disappointment. Place your order at: http://www.quantumsails.com or obtain a obligation free quotation from http://www.quantumsails.com/sails/quote_request.aspx Of course, we are happy to discuss the appropriate set-up for your individual boat as needed.
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