SYMMETRIC VS. ASYMMETRIC
Factors
Involved:
- Ease of handling
- Straight line speed
- How the race-rating rule in your area treats the asymmetric sail.
In general, the designs of asymmetrical spinnakers
& gennakers have improved a great deal in the last 5 years. In most wind
conditions an asymmetrical sail will be a little faster and a little more
forgiving to trimming, than a symmetrical sail. You can set the asymmetrical
sail with its tack on the end of the pole for racing or flying from a
tack line run to your bow or anchor roller when you are sailing shorthanded
and don't want to deal with the pole.
Gybing the asymmetrical sail and the pole is more
difficult than gybing with a symmetrical spinnaker and pole. With the
asymmetrical sail flown from a pole, you need to attach two sheets to
the clew of the sail and two guys to the tack. In addition you will need
a tack line run to the tack. When it is time to gybe, the pole is dropped
off the old guy and the tack line is tensioned. Then the pole is gybed
and attached to the new guy and the tack line is released. While the pole
is being gybed, the clew of the sail must be pulled around the headstay
by easing the old sheet and pulling on the new sheet.
Compare that process to gybing a symmetric sail, where
the sail stays in essentially the same place and just the pole is switched
to the new side. Gybing the asymmetric, with a pole, takes more practice.
Finally, you should check with your local PHRF or other rating committee
to see if there are penalties for flying an asymmetrical spinnaker from
a pole.
Asymmetric Spinnaker
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Symmetric Spinnaker
 Symmetric Spinnaker
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