Summary of Measurement Rulings issued by ISCA Measurer

The following is a series of requested rulings for modifications that have been responded to formally by ISCA.  The requested change/modification is followed by the reply in italics.

Requested Change/Modification: Ruling

 

1. Move the handrails to the outside edge of the cabin to allow crew to hike farther/easier.  The location of the Handrails should not be moved from the original location.  In the event the original position of the Handrails can not be determined then the placement should be made in accordance with section of Appendix IV of the Class Rules and specifications.

Notice to all Shark Class Members and Measurers #2003-001

RE: Clarification of Cabin top Hand Rails

This notification is to inform all members that the Cabin Top Hand Rails are to remain at their original location. Section 9.10 within the Specifications Hiking Aids indicates “No hiking device which extends beyond the gunwale for supporting crew, or counterbalance weights beyond the gunwale permitted. No hiking aid, other than standard equipment in its normal position ( e.g., grab rails, shrouds, sheets in use for normal sail adjustments) is permitted.” Hand Rails (grab rails) can not be moved outwards in doing so the rails will be consider a hiking aid thus illegal. The Hand Rails maybe shorten to accommodate turning blocks and control lines.

ISCA Specifications Committee

In the case of shark 430, the original location of the handrails could not be determined and the following instructions were given to the owner as to an acceptable location: When measured from the hull/deck joint directly to the center line of the rail, the minimum measurement is 26 1/2" at the back and 24" at the front.  These points are located 7 1/2" and 70" measured from the back edge of the cabin.

2. Add an adjustable compression post under mast step to allow higher rig tensions. This is not permitted. The use of a compression post has been clarified in section 11 of Appendix IV

3. Glass over inside of the hull to deck joint to make boat stiffer and allow higher rig tensions. Not permitted. See item 4 below for permitted changes of this nature.

4. Glass over outside of hull to deck joint and remove teak trim forward and aft of outboard track (and replace teak with StarBoard plastic if necessary) to  make boat stiffer, and reduce teak maintenance. This is permitted if done in accordance with the procedures set out in Jeff Mitchell’s letter attached hereto and presented to the AGM of CSCA in March 2003.

5. Grind down excess non-structural fibreglass work within the hull and deck. This is not permitted.

6. Replace punky plywood bulkheads with vacuum bagged foam core composite bulkheads.  Bulkheads, if replaced, must be replaced with wood having the same dimensions (including thickness) as the original material.  Wood must be replaced with wood.

7. Peel hull gelcoat (must be at least 1.5mm on this boat) and paint with Imron.  The hull may be prepared for painting by filing and sanding but must done so as to remove as little material as is necessary to provide for a proper finish.  Any excessive sanding that results in weight reduction will be a breach of the Class Rules and Specifications.

8. Peel deck gelcoat and non-skid pattern and paint with Sikkens Non-skid.  The hull may be prepared for painting by filing and sanding but must done so as to remove as little material as is necessary to provide for a proper finish.  Any excessive sanding that results in weight reduction will be a breach of the Class Rules and specifications.

9. Reduce the weight of the cutout and lazarette cover while maintaining their seaworthiness. Any alteration with the intention or effect of reducing the weight from the original design specifications for the hull, deck or interior is not permitted unless a specific request for weight relief has been request from and granted by the VP Specifications of ISCA.

10. Remove the teak trim, cockpit splash rails, and replace with StarBoard plastic  for ease of maintenance and weight distribution.  Also remove the teak beam underneath the traveller track. All original teak material should remain and be replaced with the same material, or if substituted, with material that is of the same or greater weight and dimension of the original material. Gaps in the toe rail are permitted to allow the draining of the aft deck as per the original design. The gaps are 25.5mm in width located at the right side of the lazarette and 100mm up from the transom on the starboard side while looking aft. The alterations of coamings are permitted in accordance with Appendix IV.

11. Move the keel forward to max forward position.  The Keel may be located within the tolerances permitted by the rules provided any movement of the keel would require that it measure in fully in compliance with all class rules.

12. Grind down keel to minimum dimensions (it seems to be larger than the maximums that the rules currently allow).  There were some boats that have larger than permitted keels and those boats have been measured and so long as the original keel has not been altered the boats will be considered legal.  Any modification to the keel would require that the keel be fully in compliance with all class rules.

13. Add multiple layers of Uni and Biaxial cloth to keel sump to reinforce keel attachment and remove section of hull liner to facilitate this (can replace part of liner outside of floor board if necessary). The hull could be reinforced with standard fiberglass cloth, similar to the cloth used in original construction but no part of the liner should be removed except to the extent necessary to make any repairs and shall be replaced thereafter.

14. Remove winches and replace with block and tackle. This is permitted subject to compliance with rules regarding lines not running through the combings.

15. Square off transom to provide for better flow.  This is not permitted as the hull shape is not to be modified from the mold.  The transom has a radius of approximately ¼ inch which shall not be altered.

16. Remove Bow Plate and Stem Strap.  This is standard equipment and is not to be removed.  Some boats currently do not have a stem strap and they are permitted to remain without such a strap, however, the bow fitting must remain and be replaced if missing.

17. Remove or alter internal shelves. The internal shelves are part of the original design of the shark and therefore can not be altered.  If they are to be repaired or replaced the material, size and shape should be the same, including the lip.