RATING CERTIFICATE
Sail number : BM28

YACHT DESCRIPTION

Name of Yacht: Provident Photo...
Request date : 27 06 2017
Launch year :1924
Designer : Sanders
Design year : 1923
Builder : Sanders
Usual place of sailing : English Channel

Declared dimensions :
Lenght Over All (LH) = 21.51 m
Length on the Water Line (LWL) = 18.29 m
Max width ( Bo ) = 5.49 m
Draft (Tmax) = 2.83 m
Displacement factor (FD) = 48.129


Correction factor calculation

Type of rigging : gaffer ketch = 0.85
Hull: traditional
C2 = -0.07 Kref = 0.17
C2a : -0.076
Regatta series : no = 0
Vintage bonus (build): 1924 = -0.026
Vintage bonus (design): 1923 = -0.027
Cumulative vintage bonus: -0.053
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 1 = -0.15
Propeller type : 3 fix blades = -0.16
Winches ? : without = -0.05

Correction factor (C)= 0.261

GAFFERS
Foresail area: 94.07 mē
StaysailJL = 9.30 ; LPG = 4.80
JibJL = 14.08 ; LPG = 4.15
flying jibJL = 16.77 ; LPG = 4.60

Mizzen staysail :
ALE = 7.95; ALU = 11.97; AMG = 5.68; ASF = 8.61
Area: 52.01 mē

GAFFERS
Main total area: 105.89 mē
Gaffer Mainsail
A = 12.65, B = 8.33,
C = 6.66, D = 10.96, E = 8.77
With Mizzen or Jigger sail
A = 8.54, B = 4.88, C = 4.52, D = 7.42, E = 6.02
With Gaff topsail
F = 6.71, G = 8.77, H = 10.77

No downwindsail

RATING ( Rc ): 3.6274

Time corrected Factor ( Ftc ): 0.7041

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 :

29 06 2017

JCH commission member :

Costalas Peter

Certificate number :

2017061992