RATING CERTIFICATE
Sail number : 890Y

YACHT DESCRIPTION

Name of Yacht: La Ina Photo...
Request date : 07 07 2017
Launch year :1969
Designer : Kim Holman
Design year : 1963
Builder : JW&A Upham
Class name : Twister
Usual place of sailing : Poole

Declared dimensions :
Lenght Over All (LH) = 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) = 3.436


Correction factor calculation

Type of rigging : bermudian sloop = 1
Hull: classic 2
C2 = 0 Kref = 0.187
C2a : 0.057
Regatta series : no = 0
Vintage bonus (build): 1969 = 0.029
Vintage bonus (design): 1963 = 0.021
Cumulative vintage bonus: 0.05
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)= 0.997

BERMUDIANS
Max foresail area: 25.21 mē
GenoaJL = 10.50 ; LPG = 4.60

BERMUDIANS
Main total area: 20.53 mē
Mainsail P = 9.65 ; E = 3.70

Larger downwindsail area:
SL / ALE = 10.60, SL / ALU = 11.10,
SMG / AMG = 5.50, SF / ASF = 5.45
Area: 49.64 mē

RATING ( Rc ): 5.9422

Time corrected Factor ( Ftc ): 0.8159

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 :

07 07 2017

JCH commission member :

Costalas Peter

Certificate number :

2017072012