RATING CERTIFICATE
Sail number : NONE

YACHT DESCRIPTION

Name of Yacht: GRACE Photo...
Request date : 05 05 2017
Launch year :1977
Designer : Colin Archer
Design year : 1970
Builder : Wind Boats of Wroxham
Class name : Gaff Cutter
Usual place of sailing : Brittany

Declared dimensions :
Lenght Over All (LH) = 10.67 m
Length on the Water Line (LWL) = 9.50 m
Max width ( Bo ) = 3.66 m
Draft (Tmax) = 1.60 m
Displacement factor (FD) = 8.4


Correction factor calculation

Type of rigging : gaffer cutter = 0.98
Hull: traditional
C2 = -0.07 Kref = 0.17
C2a : -0.028
Regatta series : no = 0
Vintage bonus (build): 1977 = 0.04
Vintage bonus (design): 1970 = 0.03
Cumulative vintage bonus: 0.07
Hull material : other = 0.05
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 : 3 fix blades = -0.16
Winches ? : with = 0

Correction factor (C)= 0.842

GAFFERS
Foresail area: 35.16 mē
StaysailJL = 7.50 ; LPG = 4.50
JibJL = 6.40 ; LPG = 5.25

GAFFERS
Main total area: 32.96 mē
Gaffer Mainsail
A = 4.90, B = 5.70,
C = 9.30, D = 6.35, E = 6.20

No downwindsail

RATING ( Rc ): 5.7167

Time corrected Factor ( Ftc ): 0.8061

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 05 2017

JCH commission member :

Costalas Peter

Certificate number :

2017051897