RATING CERTIFICATE
Sail number : K234

YACHT DESCRIPTION

Name of Yacht: Grey Seal Photo 1 - Photo 2...
Request date : 2019-05-30
Launch year :1967
Designer : H. Groop
Design year : 1966
Builder : Berthons
Usual place of sailing : East Coast Suffolk

Declared dimensions :
Lenght Over All (LH) = 8.30 m
Length on the Water Line (LWL) = 6.30 m
Max width (BH) = 2.18 m
Draft (TE) = 1.30 m
Displacement factor (FD) = 3.229
Rating RORC 1957 : 6.8 m


Correction factor calculation

Type of rigging : bermudian cutter = 1
Hull: traditional
C2 = -0.086 Kref = 0.16
C2a : 0.093
Performance group : Ocean racer = 0.07
Vintage bonus (build): 1967 = 0.026
Vintage bonus (design): 1966 = 0.025
Cumulative vintage bonus: 0.051
Hull material : traditional wood = -0.03
Mast material : wood/aluminium/steel = 0
Boom material : wood/aluminium/steel = 0
Mast or boom penality : 0
No mast change = 0
No spar change = 0
Sails material : type 2 = 0
Propeller type : tripale = -0.2
Winches ? : with = 0

Correction factor (C)= 0.898

BERMUDIANS
Max foresail area: 30.57 mē
Genoa HLU = 9.60 ; HLP = 6.10

BERMUDIANS
Main total area: 37.53 mē
Mainsail P = 11.89 ; E = 5.49

No downwindsail

RATING ( Rc ): 6.122

Time corrected Factor ( Ftc ): 0.8244

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 :

2019-05-30

JCH commission member :

Costalas Peter

Certificate number :

5-309-2829