RATING CERTIFICATE
Sail number : 9700T

YACHT DESCRIPTION

Name of Yacht: JOHN SILVER Photo 1 - Photo 2...
Request date : 2019-06-24
Launch year :1970
Designer : Peter Brett
Design year : 1969
Builder : Southern Yachts
Class name : Rival 31
Usual place of sailing : Dartmouth

Declared dimensions :
Lenght Over All (LH) = 9.40 m
Length on the Water Line (LWL) = 7.49 m
Max width (BH) = 2.98 m
Draft (TE) = 1.40 m
Displacement factor (FD) = 4.498


Correction factor calculation

Type of rigging : bermudian sloop = 1
Hull: classic 3
C2 = -0.01 Kref = 0.188
C2a : -0.002
Performance group : (3)Cruiser Racer = 0
Vintage bonus (build): 1970 = 0.03
Vintage bonus (design): 1969 = 0.029
Cumulative vintage bonus: 0.059
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
No spar change = 0
Sails material : type 2 = 0
Propeller type : bipale_axe = -0.05
Winches ? : with = 0

Correction factor (C)= 1.047

BERMUDIANS
Max foresail area: 28.22 mē
Genoa HLU = 10.60 ; HLP = 5.10

BERMUDIANS
Main total area: 17.72 mē
Mainsail P = 9.20 ; E = 3.35

No downwindsail

RATING ( Rc ): 6.0803

Time corrected Factor ( Ftc ): 0.8228

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 :

2019-06-24

JCH commission member :

Costalas Peter

Certificate number :

6-249-2953