RATING CERTIFICATE
Sail number : 284

YACHT DESCRIPTION

Name of Yacht: Sked Heol Photo 1 - Photo 2...
Request date : 2019-05-10
Launch year :1983
Designer : R. Dongay
Design year : 1974
Builder : Cornish Crabber
Class name : Cornish Crabber 24 MK1/2
Usual place of sailing : Dinard

Declared dimensions :
Lenght Over All (LH) = 7.31 m
Length on the Water Line (LWL) = 6.17 m
Max width (BH) = 2.44 m
Draft (TE) = 1.42 m
TEDB (Centerboarder) = 0.74 m
Displacement factor (FD) = 2.61


Correction factor calculation

Type of rigging : gaffer cutter = 0.98
Hull: ballasted centerboarder
C2 = -0.2 Kref = 0.211
C2a : 0.038
Performance group : Cruiser = -0.14
Vintage bonus (build): 1983 = 0.048
Vintage bonus (design): 1974 = 0.036
Cumulative vintage bonus: 0.084
Hull material : other = 0.05
Mast material : wood/aluminium/steel = 0
Boom material : wood/aluminium/steel = 0
Mast or boom penality : 0
No mast change = 0
Year of spar change : 2018 = 0.01
Sails material : type 2 = 0
Propeller type : bipale_axe = -0.05
Winches ? : without = -0.05

Correction factor (C)= 0.722

GAFFERS
Foresail area: 16.38 mē
StaysailHLU = 4.59 ; HLP = 2.35
flying jibHLU = 7.86 ; HLP = 2.62

GAFFERS
Main total area: 14.8 mē
Gaffer Mainsail
MAE = 6.00, MAH = 2.90,
MAU = 3.60, MAD = 5.15, MAF = 4.10
With Gaff topsail
FE = 3.86, FU = 1.89, FF = 4.84

No downwindsail

RATING ( Rc ): 3.4781

Time corrected Factor ( Ftc ): 0.709

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 :

2019-05-10

JCH commission member :

Perrin Patrick

Certificate number :

5-109-2765