RATING CERTIFICATE
Sail number : 223

YACHT DESCRIPTION

Name of Yacht: Cynthia
Request date : 28 08 2018
Launch year :1910
Designer : Thomas Jackett
Design year : 1909
Builder : Thomas Jackett
Class name : Gaff Cutter
Usual place of sailing : Dartmouth

Declared dimensions :
Lenght Over All (LH) = 15.24 m
Length on the Water Line (LWL) = 10.97 m
Max width ( Bo ) = 2.74 m
Draft (Tmax) = 2.13 m
Displacement factor (FD) = 9.972


Correction factor calculation

Type of rigging : gaffer cutter = 0.98
Hull: traditional
C2 = -0.07 Kref = 0.17
C2a : -0.006
Regatta series : no = 0
Vintage bonus (build): 1910 = -0.04
Vintage bonus (design): 1909 = -0.041
Cumulative vintage bonus: -0.081
Hull material : traditional wood = -0.03
Mast material : wood/aluminium/steel = 0
Boom material : wood/aluminium/steel = 0
Mast or boom penality : 0
Material of mast or boom different from original : no = 0
Material other spar different from original : no = 0
Sails material : type 2 = 0
Propeller type : folding or feathering = -0.04
Winches ? : with = 0

Correction factor (C)= 0.753

GAFFERS
Foresail area: 37.94 mē
StaysailJL = 8.53 ; LPG = 3.96
JibJL = 12.80 ; LPG = 3.04

GAFFERS
Main total area: 57.44 mē
Gaffer Mainsail
A = 11.27, B = 5.39,
C = 7.49, D = 10.36, E = 7.95

No downwindsail

RATING ( Rc ): 7.2753

Time corrected Factor ( Ftc ): 0.8704

The delivery of a JCH certificate does not have to be understood as the elligibility of the boat to classic regattas.
Elligibility to a specific regatta is governed by the elligibility rules the organizers has decided and have displayed in the Notice of Race.

Certification commission :

Conseil JCH

Date of certificate :

05 09 2018

JCH commission member :

Costalas Peter

Certificate number :

2018092425