Spinnaker Dimensions

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   I am confused about the spinnaker dimensions.  The Specs on this website list the #2 Spinnaker as 670 sq ft.  The spinnaker we have (I thought it was a class sail) is about 32 ft on the leaches, 17.5 ft on the foot and 19 ft at the midgirth.  This computes to about 525 sq ft.  By the way, we sail PHRF, since there are few Lasers out here in So. Cal. 

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Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest	Post Options Post Reply Quote Guests Thanks(0) Quote Reply Topic: Spinnaker Dimensions Posted: 27 June 2005 at 12:59am
	I am confused about the spinnaker dimensions. The Specs on this website list the #2 Spinnaker as 670 sq ft. The spinnaker we have (I thought it was a class sail) is about 32 ft on the leaches, 17.5 ft on the foot and 19 ft at the midgirth. This computes to about 525 sq ft. By the way, we sail PHRF, since there are few Lasers out here in So. Cal.

Bill Layton Members Profile Send Private Message Find Members Posts Add to Buddy List Commodore Joined: 15 September 2002 Location: Canada Status: Offline Points: 551	Post Options Post Reply Quote Bill Layton Report Post Thanks(0) Quote Reply Posted: 27 June 2005 at 8:48pm
	Yes the original documented sq/footage was incorrect. You are correct

Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest	Post Options Post Reply Quote Guests Thanks(0) Quote Reply Posted: 28 June 2005 at 3:14am
	Thanks Bill, I just found in the class rules the max luff is 33.0 ft and the max midgirth is 19.6 ft. Since no mention is made of the foot dimension, I assume a 19.6 ft foot is allowed, This would give about 560 sq ft. or 45 sq ft more than my old spinnaker. Is this correct?

Bill Layton Members Profile Send Private Message Find Members Posts Add to Buddy List Commodore Joined: 15 September 2002 Location: Canada Status: Offline Points: 551	Post Options Post Reply Quote Bill Layton Report Post Thanks(0) Quote Reply Posted: 28 June 2005 at 9:16am
	Yes this is true.....However max girth is a design feature....and its position varies between sailmakers. All spinnakers actually have an S curve on the leech or luff......since the spinn is a triangle this s curve allows control of max girth section.....so to have max girth at the foot and up top the effeciency would be poor at best.....for this reason u are unlikely to ever see max girth at the foot.