How does the "Grandfather Credit" work?

UNDERSTANDING THE
"GRANDFATHERING OF SPINNAKERS"

 

Back in 2005 Central Council released the following notice:


To all Member Handicappers & Owners,

On Saturday April 2, 2005, Central Council passed a motion to change the maximum penalties for the Genoa and Spinnaker, effective January 1, 2006.

The maximum allowable luff perpendicular without penalty on a genoa will be 155% of J.
Currently 153%.

The maximum allowable mid-girth, without penalty, on a spinnaker will be 180% of J.
Currently 183%.

Any spinnaker built before January 1, 2006 is grandfathered for the life of the sail.

Intrinsic in this motion is the understanding that all spinnaker and genoa penalty parameters

will be adjusted accordingly.


 


What was recognized is that there would be boats that would now be penalized by 3 sec/nm

(where they were not previous to 2006) due to this change because the size of their sails fell

within the following size ranges:

120.1 – 123 210.1 – 213
135.1 – 138 225.1 – 228
150.1 – 153 240.1 – 243
165.1 – 168 255.1 – 258
180.1 – 183 270.1 – 273
195.1 – 198 285.1 – 288

 

 

 

 

 

 

 

 

 

The Grandfathering of the sails was to ensure that we were not penalizing boats for the changes that we made. Therefore, the grandfather credit was enacted.

 


How this works:

 

Boat A has a certificate with a spinnaker G% of 212.0%.
Boat B has a certificate with a spinnaker G% of 186.0%.
Both boats sails were built prior to 2006.

According to the 2005 Table of Adjustments:
Boat A received a -6 sec/nm adjustment due to the size of its sails.
Boat B received a -3 sec/nm adjustment due to the size of its sails.

According to the NEW 2006 Table of Adjustments:
Boat A will now receive a -9 sec/nm adjustment due to the size of its sails.
Boat B continues to receive a -3 sec/nm adjustment due to the size of its sails.

On the Certificate:
Boat A would show that it receives a -9 sec/nm adjustment due to the size of its sails.
But would also note, that there was a +3 sec/nm Grandfather adjustment
Total Adjustment for the spinnaker is now back to -6 sec/nm.

Boat B would continue to show a -3 sec/nm adjustment due to the size of its sails.


A SPECIAL NOTE:

The grandfathering of a spinnaker is not applied to the spinnaker pole.

Example: Boat B (as above) has a spinnaker pole that is oversized and due to the length, results in a G% of 196%. However, his actual spinnaker is 186.0% (as above).

According to the 2005 Table of Adjustments:
Boat B received a -3 sec/nm adjustment due to the size of its pole.

According to the NEW 2006 Table of Adjustments:
Boat B will now receive a -6 sec/nm adjustment due to the size pole.