RATING CERTIFICATE
Sail number : 5.5 JI F25

YACHT DESCRIPTION

Name of Yacht: TWINS XII Photo 1 - Photo 2...
Request date : 2019-05-05
Launch year :1962
Designer : Carl-Erik + Einar Ohlson (SWE)
Builder : Hjalmar Olsson & David Olsson. Arendals båtvarv (S
Usual place of sailing : Atlantique

Declared dimensions :
Lenght Over All (LH) = 9.71 m
Length on the Water Line (LWL) = 6.93 m
Max width (BH) = 1.92 m
Draft (TE) = 1.35 m
Displacement factor (FD) = 2.588


Correction factor calculation

Type of rigging : bermudian sloop = 1
Hull: classic 2
C2 = -0.03 Kref = 0.179
C2a : 0.032
Performance group : (1)Regatta = 0.514
Vintage bonus (build): 1962 = 0.02
Vintage bonus (estimated): 1961 = 0.018
Cumulative vintage bonus: 0.038
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 : sans = 0.03
Winches ? : with = 0

Correction factor (C)= 1.554

BERMUDIANS
Max foresail area: 11.6 m²
()
Genoa HLU = 7.76 ; HLP = 2.49

BERMUDIANS
Main total area: 19.55 m²
Mainsail P = 9.97 ; E = 3.41

Larger downwindsail area:
SL / ALE = 9.83, SL / ALU = 9.83,
SHW / AMG = 7.34, SFL / SF = 6.59
Area: 58.9 m²

RATING ( Rc ): 10.599

Time corrected Factor ( Ftc ): 0.9723

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 :

2019-05-05

JCH commission member :

Perrin Patrick

Certificate number :

5-059-2742