Sailing - Spinnaker Dimensions

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Spinnaker Dimensions

Printed From: Laser 28 International Class Association
Category: Laser 28 General
Forum Name: Sailing
Forum Description: Everything on sailing the boat
URL: http://www.laser28.org/forum/forum_posts.asp?TID=90
Printed Date: 14 May 2024 at 7:22pm
Software Version: Web Wiz Forums 11.03 - http://www.webwizforums.com

Topic: Spinnaker Dimensions

Posted By: Guests
Subject: Spinnaker Dimensions
Date 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.

Replies:

Posted By: Bill Layton
Date Posted: 27 June 2005 at 8:48pm

Yes the original documented sq/footage was incorrect. You are correct

Posted By: Guests
Date 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?

Posted By: Bill Layton
Date 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.