RATING CERTIFICATE
(Valid only after approval and registration by the JCH commission)

YACHT DESCRIPTION

Name of Yacht: AMBRE II
Request date : 09 08 2017
Launch year :1952
Designer : alfred Knieff
Builder : alfred Knieff
Class name : les GrandChamps
Usual place of sailing : nantes

Declared dimensions :
Lenght Over All (LOA) = 7.77 m
Length on the Water Line ( LWL ) = 7.50 m
Max width ( Bo ) = 2.48 m
Draft (Tmax) = 1.30 m
Displacement factor (FD) = 3.05
Rating RORC 1957 : 6.513 m
Rating IOR : 21.36 feet


Correction factor calculation

Type of rigging : bermudian sloop = 1
Hull: centerboarder
C2 = 0.13 Kref = 0.17
C2a : 0.004
Regatta series : no = 0
Vintage bonus (build): 1952 = 0.002
Vintage bonus (estimated): 1951 = 0.001
Cumulative vintage bonus: 0.003
Hull material : traditional wood = -0.03
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 : no propeller = 0
Winches ? : with = 0

Correction factor (C)= 1.107

BERMUDIANS
Max foresail area: 7.78 mē
GenoaJL = 7.10 ; LPG = 2.10

BERMUDIANS
Main total area: 23.28 mē
Mainsail P = 9.20 ; E = 4.40

Larger downwindsail area:
SL / ALE = 6.90, SL / ALU = 6.91,
SMG / AMG = 4.25, SF / ASF = 4.40
Area: 24.63 mē

RATING ( Rc ): 5.8198

Time corrected Factor ( Ftc ): 0.8307

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.