RATING CERTIFICATE
Sail number : 387

YACHT DESCRIPTION

Name of Yacht: ISMANA Photo 1 - Photo 2...
Request date : 2020-10-22
Launch year :1951
Designer : Jack Laurent Giles
Design year : 1949
Builder : Sabberton Brothers- Wroxham
Usual place of sailing : CHARENTE MARITIME

Declared dimensions :
Lenght Over All (LH) = 14.26 m
Length on the Water Line (LWL) = 10.90 m
Max width (BH) = 3.25 m
Draft (TE) = 2.10 m
Displacement factor (FD) = 13.962
Rating RORC 1957 : 183980 m


Correction factor calculation

Type of rigging : bermudian yawl = 0.98
Hull: classic 2
C2 = -0.03 Kref = 0.179
C2a : 0.027
Performance group : Performance class 3 = 0
Vintage bonus (build): 1951 = 0.001
Vintage bonus (design): 1949 = -0.001
Cumulative vintage bonus: 0
Hull material : traditional wood = -0.03
Mast material : wood/aluminium/steel = 0
Boom material : wood/aluminium/steel = 0
Mast or boom penality : 0
No mast change = 0
No spar change = 0
Sails material : type 2 = 0
Propeller type : tripale = -0.14
Winches ? : with = 0

Correction factor (C)= 0.815

BERMUDIANS
Max foresail area: 47.82 mē
Genoa HLU = 14.80 ; HLP = 6.19

BERMUDIANS
Main total area: 53.62 mē
Mainsail P = 13.60 ; E = 5.60
Mizzen or Jigger sail P = 6.45 ; E = 2.65

Mizzen staysail :
ALE = 6.30; ALU = 7.80; AMG = 2.57; SF = 6.50
Area: 19.72 mē

Larger downwindsail area:
SL / ALE = 15.00, SL / ALU = 15.00,
SHW / AMG = 8.70, SFL / SF = 9.60
Area: 111 mē

RATING ( Rc ): 7.9225

Time corrected Factor ( Ftc ): 0.8808

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 :

2020-10-22

JCH commission member :

Olivier Beau

Certificate number :

0-220-3230