New genoa halyard exit approved

Sigma 33 Association News
Post Reply
jeffw
Posts: 19
Joined: Thu Jul 30, 2009 8:39 am

New genoa halyard exit approved

Post by jeffw » Tue Aug 11, 2009 9:07 pm

AGM approves Genoa Halyard Mast Exit

This year’s AGM has adopted the proposal, put forward by Jack Kelly, a former Sigma 33 owner and twice chairman of the Class Association, to change Rule 7.7 to allow a halyard exit on the starboard side of the mast in addition to the spinnaker halyard exit currently permitted on the port side.

It is then recommended that the spinnaker halyard be moved to the new position on the starboard side as the majority of mark roundings are to port and it is easier and safer for crew to hoist from the windward side as the boat bears away to round the mark. The same problem does not occur at the leeward mark with the jib hoist as the boat is generally more upright.

We have since received specialist advice that to preserve the structural integrity of the mast the new slot on the starboard side should be 200mm higher than the original on the port side.

However, if contemplating this change your committee strongly advises that the advice of your boatyard is sought before implementing any changes to the mast or deck arrangements.

New Rule 7.7 will read: "No alterations to the mast are permitted except for approved electronic devices, navigation lights, wind vanes, pre-feeders and like additions. No alterations to the main halyard exits are permitted, nor any alteration which may change the moment of inertia of the spar. The spinnaker halyard may exit from the port or starboard side of the mast. One genoa halyard exit may exit from the opposite side of the mast. On the port side of the mast a slot may be cut with its centre point 2380/2420mm above the bottom of the mast extrusion and its forward edge 25/35mm forward of the jigging groove on the side of the mast. On the starboard side of the mast a slot may be cut with its centre point 2580/2620mm above the lower edge of the mast extrusion and its forward edge 25/35mm forward of the jigging groove on the side of the mast. If these slots are cut a standard Selden Masts slot plate shall be fitted to each but no other jamming or cleating devices shall be fitted to the mast".

Post Reply