RATING CERTIFICATE
Sail number : K44

YACHT DESCRIPTION
Name of Yacht: BLACK DIAMOND Photo 1 - Photo 2... Request date : 2025-02-20 Launch year :2007 Designer : Jack Holt Design year : 2006 Builder : Coombes of Bosham Class name : Yachting World Diamond Usual place of sailing : Essex	Declared dimensions : Lenght Over All (L_H) = 9.18 m Length on the Water Line (L_WL) = 7.30 m Max width (B_H) = 2.10 m Draft (TE) = 1.30 m Displacement factor (FD) = 1.868
Correction factor calculation Type of rig : bermudian sloop = 1 Hull: modern 1 C2 = 0.01 Kref = 0.191 C2a = -0.026 Performance group : Performance class 1 = 0.24 Vintage bonus (build): 2007 = 0.082 Vintage bonus (design): 2006 = 0.081 Cumulative vintage bonus: 0.163 Hull material : plywood = 0 Mast material : wood/aluminium/steel = 0 Boom material : wood/aluminium/steel = 0 Mast or boom total penality (D.2.1.3.6) : 0 Year of mast change : 2020 = 0.015 Year of spar change : 2020 = 0.007 Sails material : type 2 = 0 Propeller type : sans = 0 Winches ? : with = 0 Correction factor (C)= 1.451	BERMUDIANS Max foresail area: 9.2 m² Jib or staysail HLU = 7.34 ; HLP = 2.40 BERMUDIANS Main total area: 18.86 m² Mainsail P = 9.32 ; E = 3.52 Larger downwindsail area: SL / ALE = 8.30, SL / ALU = 8.30, SHW / AMG = 5.39, SFL / ASF = 5.07 Area: 36.84 m² Use of big-boy, tall-boy, spinnaker staysails or other special sails in association with the spinnaker = NON

RATING ( Rc ): 9.7522

Time corrected Factor ( Ftc ): 0.9392

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 :

2025-04-11

JCH commission member :

Costalas Peter

Certificate number :

4-115-4227