RATING CERTIFICATE
Sail number : GBR644Y

YACHT DESCRIPTION

Name of Yacht: MARY LUNN Photo 1 - Photo 2...
Request date : 2019-06-12
Launch year :1940
Designer : Uffa Fox
Design year : 1935
Builder : Mazagon Dock Company, Bombay
Class name : one-off
Usual place of sailing : England, South Coast

Declared dimensions :
Lenght Over All (LH) = 10.67 m
Length on the Water Line (LWL) = 7.62 m
Max width (BH) = 2.54 m
Draft (TE) = 1.80 m
Displacement factor (FD) = 5.707


Correction factor calculation

Type of rigging : bermudian yawl = 0.98
Hull: classic 1
C2 = -0.03 Kref = 0.171
C2a : 0.13
Performance group : (4)Cruiser = -0.14
Vintage bonus (build): 1940 = -0.01
Vintage bonus (design): 1935 = -0.015
Cumulative vintage bonus: -0.025
Hull material : traditional wood = -0.03
Mast material : wood/aluminium/steel = 0
Boom material : wood/aluminium/steel = 0
Mast or boom penality : 0
Year of mast change : 2016 = 0.019
No spar change = 0
Sails material : type 2 = 0
Propeller type : orientable ou repliable = -0.03
Winches ? : with = 0

Correction factor (C)= 0.874

BERMUDIANS
Max foresail area: 26.35 mē
Yankee HLU = 12.02 ; HLP = 4.20

BERMUDIANS
Main total area: 35.6 mē
Mainsail P = 10.92 ; E = 4.70
Mizzen or Jigger sail P = 5.46 ; E = 1.94

Mizzen staysail :
ALE = 5.20; ALU = 7.75; AMG = 3.10; SF = 5.60
Area: 19.43 mē

Larger downwindsail area:
SL / ALE = 12.25, SL / ALU = 12.25,
SHW / AMG = 7.10, SFL / SF = 6.77
Area: 71.81 mē

RATING ( Rc ): 6.6053

Time corrected Factor ( Ftc ): 0.8425

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 :

2019-06-12

JCH commission member :

Costalas Peter

Certificate number :

6-129-2891