RATING CERTIFICATE
(Valid only after approval and registration by the JCH commission)
Sail number : 551

YACHT DESCRIPTION

Name of Yacht: MAH JONG Photo 1 - Photo 2...
Request date : 2025-06-04
Launch year :1957
Designer : S&S
Design year : 1957
Builder : Cheoy Lee
Class name : Classic
Usual place of sailing : New England US

Declared dimensions :
Lenght Over All (LH) = 15.80 m
Length on the Water Line (LWL) = 12.01 m
Max width (BH) = 3.60 m
Draft (TE) = 2.30 m
Displacement factor (FD) = 26.906

Correction factor calculation

Type of rig : bermudian yawl = 0.98
Hull: traditional
C2 = -0.086 Kref = 0.16
C2a = 0.063
Performance group : Performance class 3 = 0
Vintage bonus (build): 1957 = 0.013
Vintage bonus (design): 1957 = 0.013
Cumulative vintage bonus: 0.026
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
No spar change = 0
Sails material : type 2 = 0
Propeller type : orientable ou repliable = -0.01
Winches ? : with = 0

Correction factor (C)= 0.943
BERMUDIANS
Max foresail area: 119.5 m²
Jib or staysail HLU = 16.50 ; HLP = 7.25
Yankee HLU = 16.29 ; HLP = 6.71

BERMUDIANS
Main total area: 77.36 m²
Mainsail P = 16.02 ; E = 7.00
Mizzen or Jigger sail P = 3.20 ; E = 7.00

Mizzen staysail :
ALE = 6.68; ALU = 9.14; AMG = 5.37; SF = 7.55
Area: 38.27 m²

Larger downwindsail area:
SL / ALE = 15.04, SL / ALU = 17.60,
SHW / AMG = 10.68, SFL / ASF = 9.20
Area: 141.22 m²

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

RATING ( Rc ): 10.5023

Time corrected Factor ( Ftc ): 0.9615

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.