RATING CERTIFICATE
(Valid only after approval and registration by the JCH commission)
Sail number : BY

YACHT DESCRIPTION

Name of Yacht: CORNUBIA BY
Request date : 2026-07-29
Launch year :1911
Designer : Slade and Sons
Design year : 1911
Builder : Slade and sons
Class name : Vintage
Usual place of sailing : Falmouth

Declared dimensions :
Lenght Over All (LH) = 15.70 m
Length on the Water Line (LWL) = 13.30 m
Max width (BH) = 4.20 m
Draft (TE) = 2.45 m
Displacement factor (FD) = 40.756

Correction factor calculation

Type of rig : gaffer cutter = 0.88
Hull: traditional
C2 = -0.086 Kref = 0.16
C2a = 0.048
Performance group : Performance class 1 = 0.06
Vintage bonus (build): 1911 = -0.039
Vintage bonus (design): 1911 = -0.039
Cumulative vintage bonus: -0.078
Hull material : traditional wood = -0.03
Mast material : wood/aluminium/steel = 0
Boom material : wood/aluminium/steel = 0
Mast or boom total penality (D.2.1.3.6) : 0
No mast change = 0
Year of spar change : 2010 = 0.009
Sails material : type 2 = 0
Propeller type : orientable ou repliable = -0.01
Winches ? : with = 0

Correction factor (C)= 0.802
GAFFERS
Foresail area: 72.4 m²
Staysail HLU = 8.38 ; HLP = 8.94
Jib HLU = 12.48 ; HLP = 3.17
flying jib HLU = 8.65 ; HLP = 2.80

GAFFERS
Main total area: 70.89 m²
Gaffer Mainsail
MAE = 11.26, MAH = 7.21,
MAU = 6.89, MAD = 12.00, MAF = 9.12
With Gaff topsail
FE = 6.33, FU = 12.19, FF = 8.99

Larger downwindsail area:
SL / ALE = 16.61, SL / ALU = 19.08,
SHW / AMG = 10.85, SFL / ASF = 11.35
Area: 162.84 m²

Use of big-boy, tall-boy, spinnaker staysails or other special sails in association with the spinnaker = NO

RATING ( Rc ): 7.9254

Time corrected Factor ( Ftc ): 0.8809

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.

IMPORTANT :
Handicap is calculated according to JCH calculation rules with your own measurements.
You are not allowed to use until it has been validated by a member of the JCH committee.