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2017 Nationals Measurement Info

posted Jun 10, 2017, 8:40 AM by Michael Lovett   [ updated Jun 10, 2017, 8:43 AM ]
Measurement update from Chris Pollak – Chief Measurer:

It looks like we’re going to have a gangbuster turnout of geezers at the Chautauqua Nationals! Of the 87 pre-registrants, 38 are Old Goats (50 years and older) and 18 of us are genuine geezers (full disclosure – I am one!) who qualify for the Milnes Trophy (60 years and older). In deference to us seniors, we will not be measuring centerboards for the first time in three years but we will continue to use a slimmed down measurement process. This will make it easier to get the 80 plus boats measured in a timely manner and ease the staffing requirements. We will once again rely on volunteers from all fleets to sign up for a time slots to serve on the Nationals measurement committee. Steve Lavender will lead this group as the local representative.

Here’s what we will check: 
1. Safety equipment required by the Coast Guard and/or the Thistle Class:
o Anchor & chain - 8 pound minimum
o Anchor line length – 100 feet minimum and line shall not be less than 1/4” in diameter or made up of more than two pieces of rope plus a chain
o USCG approved PFD’s – one per person 
o One additional “throwable” life saving device (life jacket or cushion)
o Paddle or oar 
o Bailing device(s) – 2 gallons minimum
o Whistle

2. All up weight – 515 pounds minimum.  Weight does not include sails, jib sheets, spinnaker pole, paddle, life preservers, anchor and line, and similar readily-removable items.  The rudder, tiller, mainsheet and attached hardware and rigging is included.  Also note that Hull Corrector Weights shall be firmly attached to the hull, either exposed, or, if inside a tank, located immediately adjacent to an inspection port. Half of the weight shall be located at or ahead of the chain plates with the other half located at least 6’ 0” aft of the chain plates. Any weight in excess of 15 pounds shall be evenly divided and placed half in the bow and half in the stern with the two halves at least 16’ apart.

3. Sail measurement – two mainsails, two jibs, one spinnaker (we will only measure sails which do not bear a previous Nationals measurement stamp or mark).  

4. Rudder weight – 8 pounds minimum.  Note that rudder corrector weights must be permanently attached.

5. Mainsail foot – 11’-11” maximum.  This effectively controls both the maximum mainsail foot dimension and the minimum length of the boom for which there is no specific dimension shown on the Plans.  We will check this at the Nationals by using a measuring stick to mark the boom at a point 11’-11” from the interior surface of the mast sail slot.  What you may not realize is that putting a stop on the boom at this point could be an improper placement.  The Sail Plan says “CLOTH OF SAIL MUST NOT BE ABLE TO BE EXTENDED BEYOND THIS LENGTH”.  Depending on the grommet configuration, bolt rope and sail slug on the clew, you may need to reposition the stop so that the aft most part of the mainsail cannot go beyond the 11’- 11” mark.   For those of us who are maxing out the foot tension on the main in almost all conditions, this is worth checking before you arrive in Chautauqua.

6. Mast J Dimension  
Wood or Gold Aluminum: 4’–10” (+/– 1 1/2”)
New Aluminum: 4’–10 1/2” (+/– 1 1/2”)
Measured from aft most point of forestay to the front of the mast, parallel to the horizontal base line with rig tensioned and butt shimmed as if sailing in moderate conditions.

Please remember that it is up to you to make sure that your boat, sails, and equipment are in compliance with all the Thistle Class rules whether or not they are spot checked at a Nationals.