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Compukeel™ Templates and template kits are available for many S2 boats. On the S2 9.1m and S2 10.3 m many owners have found that the keel requires thinning at the top because the keel mold spread when the keels were cast. The factory windowed some of the latter boats (cut out circles in the top of the keel) to reduce the boat weight to more closely match published specifications. Owners who race the boat under IMS have been very happy with the performance improvement from thinning and fairing the keel to the designed dimensions and re-measuring the boat. They find that the boat is significantly faster, but because of the weight change, is rated slower. Compukeel™ Templates and template kits are also available for:

S2 7.9m centerboard Sabre 34 MK2 Sabre 36 Santana 20 Santana 35
Schock 35 Soverel 27 Soverel 33 Swan 51 Swan 53

Other boat owners have used the following Universal™ Template kit chordlengths. Owners' wishing to simply check the keel should only purchase the shortest and the longest chordlengths. Owners desiring more templates should specify additional chordlengths between the sizes listed in the table. There isn't a "correct number" of templates required for fairing the keel, but rather what the person fairing feels comfortable with. Most people like a template for each 10" to 20" of keel height. For available chordlengths, pricing and an Universal Template™ Kit Order Form follow this link.

Universal™ Template Pattern
Universal™ Template Pattern


Boat Model (click on boat to order) Chord lengths used Keel type Price, plus delivery
Sabre 28 Mk3 53", 65", 73" Lead $250
Sabre 30 41", 57", 73" Lead $260
San Juan 24 41" Lead $90
San Juan 7.7 32", 38", 45" Lead $210
Santana 30-30 GP 29", 41", 57" Lead $240
Santana 35 26", 32", 45", 53" Lead $270
Santana 525 18", 26", 35" Lead $180
Soverel 30 35", 41", 49" Lead $220
Soverel 39 38", 49", 65" Lead $240
Star 45", 49", 57" Cast Iron $250

If your boat has a lead keel and you would like a quotation for a Compukeel™ Template kit or assembled templates, please send, or e-mail the keel offset dimensions. These usually are available from the designer or manufacturer. If your boat has a cast iron keel, or the keel-offset data isn't available, you will want to use the Universal™ Template Kit.

If you would like assistance in selecting patterns for the Universal™ Template Kit, measure the keel chordlength at the top and bottom of the ballast, and the vertical distance between these chordlengths. Knowing the vertical distance between these two measurements will help determine the number of templates. To measure the chordlength, hook the end of a tape measure on the trailing edge of the keel. Pull the tape measure forward to the point of maximum keel thickness. From the point of maximum thickness forward, the tape measure should pulled forward parallel to the centerline of the boat. Sight across the tape measure to determine the location of the leading edge of the keel. Send us these dimensions in our Universal™ Template Kit patterns to use request form for a recommendation on which patterns to use if you are having trouble deciding.

Follow this link for available chordlengths, pricing, and order form for the Universal™ Template kit.

If you have any questions, contact us using our on-line inquiry form, write us at COMPUTER KEELS COMPANY, P.O. Box 39757, Edina, MN 55439 or call (952) 829-5670, or e-mail:

Updated November 10, 2014 © 1997-2014 Computer Keels Company All rights reserved

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