RATING CERTIFICATE
Sail number : GBR1157Y

YACHT DESCRIPTION

Name of Yacht: Crionna Photo...
Request date : 21 05 2013
Launch year :1970
Designer : Kim Holman
Design year : 1963
Builder : J W & A Upham
Class name : Twister
Usual place of sailing : Northern Europe

Declared dimensions :
Lenght Over All (LOA) = 8.61 m
Length on the Water Line ( LWL ) = 6.55 m
Max width ( Bo ) = 2.46 m
Draft (Tmax) = 1.52 m
Displacement factor (FD) = 3.293


Correction factor calculation

Type of rigging : bermudian sloop = 1
Hull: classic 2
C2 = 0.08 Kref = 0.187
C2a : 0.075
Regatta series : no = 0
Vintage bonus (build): 1970 = 0.03
Vintage bonus (design): 1963 = 0.021
Cumulative vintage bonus: 0.051
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 : 2 fix blades = -0.09
Winches ? : with = 0

Correction factor (C)= 1.166

BERMUDIANS
Max foresail area: 24.88 mē
GenoaJL = 9.93 ; LPG = 4.80

BERMUDIANS
Main total area: 16.74 mē
Mainsail P = 8.69 ; E = 3.35

Larger downwindsail area:
SL / ALE = 9.75, SL / ALU = 9.75,
SMG / AMG = 5.86, SF / ASF = 5.50
Area: 47.03 mē

RATING ( Rc ): 6.5315

Time corrected Factor ( Ftc ): 0.8531

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 :

21 05 2013

JCH commission member :

Olivier Beau

Certificate number :

201305917