RATING CERTIFICATE
Sail number : 3808R

YACHT DESCRIPTION

Name of Yacht: Obsession Photo 1 - Photo 2...
Request date : 2019-04-28
Launch year :1971
Designer : E Ohlson
Design year : 1968
Builder : Tyler Boat Company
Class name : Ohlson 38
Usual place of sailing : West Country

Declared dimensions :
Lenght Over All (LH) = 11.30 m
Length on the Water Line (LWL) = 8.41 m
Max width (BH) = 3.06 m
Draft (TE) = 1.71 m
Displacement factor (FD) = 6.525
Rating IOR : .894 feet


Correction factor calculation

Type of rigging : bermudian sloop = 1
Hull: classic 3
C2 = -0.01 Kref = 0.188
C2a : 0.031
Performance group : Cruiser Racer = 0
Vintage bonus (build): 1971 = 0.031
Vintage bonus (design): 1968 = 0.028
Cumulative vintage bonus: 0.059
Hull material : other = 0.05
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 : orientable ou repliable = -0.03
Winches ? : with = 0

Correction factor (C)= 1.1

BERMUDIANS
Max foresail area: 46.83 mē
Genoa HLU = 13.93 ; HLP = 6.44

BERMUDIANS
Main total area: 28.92 mē
Mainsail P = 13.13 ; E = 3.83

Larger downwindsail area:
SL / ALE = 13.00, SL / ALU = 14.40,
SHW / AMG = 6.38, SFL / SF = 7.50
Area: 75.4 mē

RATING ( Rc ): 8.931

Time corrected Factor ( Ftc ): 0.9217

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 :

2019-04-29

JCH commission member :

Costalas Peter

Certificate number :

4-299-2706