Double HandedClub Certificate2025
Double JUSA 63281
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles41.6°41.6°39.5°38.3°38.1°38.2°38.3°39.1°41.7°
Beat VMG2.693.614.214.474.554.584.594.544.30
52°4.135.366.066.326.426.466.506.496.40
60°4.345.576.216.486.596.646.686.716.67
75°4.475.706.316.626.806.906.987.097.12
90°4.365.616.296.656.917.107.257.457.58
110°4.045.396.286.727.037.247.417.627.92
120°3.895.246.176.697.077.407.698.108.32
135°3.424.755.796.456.897.297.688.6410.09
150°2.854.075.135.986.536.947.338.179.67
Run VMG2.473.524.455.225.866.356.757.468.38
Gybe Angles146.4°146.4°151.0°155.4°163.0°169.6°175.4°176.3°146.7°
APH ToD:600.2CDL: 7.415APH ToT: 0.9996CertNo:22117
BOAT
ClassJ-29DesignerR.JohnstoneBuilderJ-BoatsAge date01/1986Series date01/1986Offset fileUS17305.BOFData fileUSA63281
HULL
Length Overall8.961 mMaximum Beam3.389 mDraft1.784 mDisplacement3,021 kgDLR7.0088IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameterm
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail25.4725.93Headsail Luffed32.7732.77Headsail FlyingSymmetric66.5866.58Asymmetric
STORM SAIL AREAS (m²)
Trysail7.41Storm Jib8.51Heavy Weather Jib22.98
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
The owner and any other person in charge is responsible that boat is complying with her certificate in accordance with RRS 78.1 and ORC Rule 304.
ORC Ref  04310003VB1Issued on 07/07/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org
Double HandedClub Certificate2025
Double JUSA 63281
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1337.5998.1854.6806.2790.7786.3783.6792.3836.4
52°871.4671.0594.3569.4560.9557.2554.3554.9562.6
60°828.7646.0579.3555.7546.7542.3538.6536.5539.9
75°805.1631.9570.1543.9529.5522.0515.7507.7505.3
90°826.0642.1572.5541.1521.2506.9496.5483.2474.7
110°892.2668.3573.4535.3512.1497.0485.8472.2454.6
120°924.9686.9583.2538.3509.4486.5468.4444.5432.8
135°1053.2758.3621.8558.1522.7494.0468.8416.7356.9
150°1264.3885.5701.3602.4551.1518.8491.1440.5372.3
Run VMG1459.61022.5809.2689.0614.5566.5533.6482.3429.8
Selected Courses
Windward / Leeward1396.71010.3831.9747.6702.6676.4658.6637.3633.1
All purpose1062.5787.8666.9613.2585.2568.1555.0537.1526.6
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward727.00.8253
All purpose600.20.9996
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7227
Downwind "popa"0.8903
70% up, 30% down "Ilhabela"0.7659
30% up, 70% down "Ilhabela-inverso"0.8324
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Predominantly Upwind646.90.9274
Predominantly Downwind601.20.9979
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low727.40.8249
Triple Number AP Medium597.11.0049
Triple Number AP High551.61.0878
Triple Number Windward/Leeward Low960.40.6247
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Single Number Predominant Upwind668.60.8974
Single Number Predominant Reaching592.61.0125
Single Number Predominant Downwind625.00.9599
Predominant Upwind - Low848.40.7072
Predominant Upwind - Low/Med685.70.8750
Predominant Upwind - Medium633.80.9467
Predominant Upwind - Med/High609.70.9841
Predominant Upwind - High601.50.9976
Predominant Downwind Low878.00.6834
Predominant Downwind Low/Med669.50.8961
Predominant Downwind Medium584.91.0259
Predominant Downwind Med/High530.01.1320
Predominant Downwind High493.21.2166
Predominant Reaching Low774.70.7745
Predominant Reaching Low/Med619.70.9681
Predominant Reaching Medium562.51.0667
Predominant Reaching Med/High526.41.1398
Predominant Reaching High502.81.1933
SA/DSPL Upwind27.77SA/DSPL Downwind43.88
Scoring OptionTODTOT
5-Band Windward/Leeward Low1062.80.5646
5-Band Windward/Leeward Low/Med809.40.7413
5-Band Windward/Leeward Medium712.80.8418
5-Band Windward/Leeward Med/High661.70.9067
5-Band Windward/Leeward High640.30.9371
Windward/Leeward 60-40 Low1059.60.5662
Windward/Leeward 60-40 Low/Med817.30.7341
Windward/Leeward 60-40 Medium729.70.8223
Windward/Leeward 60-40 Med/High686.60.8739
Windward/Leeward 60-40 High671.90.8930
5-Band AP Low798.60.7513
5-Band AP Low/Med653.70.9178
5-Band AP Medium591.21.0148
5-Band AP Med/High556.71.0777
5-Band AP High538.41.1144
5-Band SF Bay Tour - Low921.40.6512
5-Band SF Bay Tour - Low/Med776.60.7726
5-Band SF Bay Tour - Medium692.40.8666
5-Band SF Bay Tour - Med/High648.70.9249
5-Band SF Bay Tour - High629.20.9536
Chicago-Mac Upwind0.8781
Chicago-Mac All Purpose0.9060
Chicago-Mac Downwind0.9293
Bayview-Mac Cove Island0.6922
Bayview-Mac Shore0.6978
Harvest Moon Regatta526.11.1405
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance648.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating648.00.9259
FinRating, kevyt tuuli1045.20.9568
FinRating, kova tuuli542.40.9218
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9259
Triple Number Coastal/Long Distance Low0.8249
Triple Number Coastal/Long Distance Medium1.0049
Triple Number Coastal/Long Distance High1.0878
Triple Number Windward/Leeward Low0.6514
Triple Number Windward/Leeward Medium0.8312
Triple Number Windward/Leeward High0.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
For information
General Purpose Handicap (GPH)663.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low727.4
Triple Number Coastal/Long Distance Medium597.1
Triple Number Coastal/Long Distance High551.6
Triple Number Windward/Leeward Low921.1
Triple Number Windward/Leeward Medium721.8
Triple Number Windward/Leeward High655.1
Predominantly Upwind646.9
Predominantly Downwind601.2
Predominantly Reaching581.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8249
Triple Number Coastal/Long Distance Medium1.0049
Triple Number Coastal/Long Distance High1.0878
Triple Number Windward/Leeward Low0.6514
Triple Number Windward/Leeward Medium0.8312
Triple Number Windward/Leeward High0.9159
Coastal/Long Distance0.9259
Predominantly Upwind0.9274
Predominantly Downwind0.9979
For information
General Purpose Handicap (GPH)663.5
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9996
Distanseseilas Trippeltall svak vind0.8249
Distanseseilas Trippeltall mellomvind1.0049
Distanseseilas Trippeltall sterk vind1.0878
Pølsebane Trippeltall svak vind0.6514
Pølsebane Trippeltall mellomvind0.8312
Pølsebane Trippeltall sterk vind0.9159
Motvind Singeltall0.9274
Medvind Singeltall0.9979
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Coastal/Long Distance648.00.9259
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind646.90.9274
Predominantly Downwind601.20.9979
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore634.40.9458
Cape Doctor Coastal529.81.1325
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8249
Triple Number Coastal/Long Distance Medium1.0049
Triple Number Coastal/Long Distance High1.0878
Triple Number Windward/Leeward Low0.6514
Triple Number Windward/Leeward Medium0.8312
Triple Number Windward/Leeward High0.9159
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8249
Triple Number Coastal/Long Distance Medium1.0049
Triple Number Coastal/Long Distance High1.0878
Triple Number Windward/Leeward Low0.6514
Triple Number Windward/Leeward Medium0.8312
Triple Number Windward/Leeward High0.9159
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Predominantly Upwind646.90.9274
Predominantly Downwind601.20.9979
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance648.00.9259
Triple Number Coastal/Long Distance Low727.40.8249
Triple Number Coastal/Long Distance Medium597.11.0049
Triple Number Coastal/Long Distance High551.61.0878
Triple Number Windward/Leeward Low921.10.6514
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1481.31011.5787.4681.9622.6588.6559.6513.4502.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low727.40.8249
Triple Number AP Medium597.11.0049
Triple Number AP High551.61.0878
Triple Number Windward/Leeward Low960.40.6247
Triple Number Windward/Leeward Medium721.80.8312
Triple Number Windward/Leeward High655.10.9159
Single Number Predominant Upwind668.60.8974
Single Number Predominant Reaching592.61.0125
Single Number Predominant Downwind625.00.9599
Predominant Upwind - Low848.40.7072
Predominant Upwind - Low/Med685.70.8750
Predominant Upwind - Medium633.80.9467
Predominant Upwind - Med/High609.70.9841
Predominant Upwind - High601.50.9976
Predominant Downwind Low878.00.6834
Predominant Downwind Low/Med669.50.8961
Predominant Downwind Medium584.91.0259
Predominant Downwind Med/High530.01.1320
Predominant Downwind High493.21.2166
Predominant Reaching Low774.70.7745
Predominant Reaching Low/Med619.70.9681
Predominant Reaching Medium562.51.0667
Predominant Reaching Med/High526.41.1398
Predominant Reaching High502.81.1933
SA/DSPL Upwind27.77SA/DSPL Downwind43.88
Scoring OptionTODTOT
5-Band Windward/Leeward Low1062.80.5646
5-Band Windward/Leeward Low/Med809.40.7413
5-Band Windward/Leeward Medium712.80.8418
5-Band Windward/Leeward Med/High661.70.9067
5-Band Windward/Leeward High640.30.9371
Windward/Leeward 60-40 Low1059.60.5662
Windward/Leeward 60-40 Low/Med817.30.7341
Windward/Leeward 60-40 Medium729.70.8223
Windward/Leeward 60-40 Med/High686.60.8739
Windward/Leeward 60-40 High671.90.8930
5-Band AP Low798.60.7513
5-Band AP Low/Med653.70.9178
5-Band AP Medium591.21.0148
5-Band AP Med/High556.71.0777
5-Band AP High538.41.1144
5-Band SF Bay Tour - Low921.40.6512
5-Band SF Bay Tour - Low/Med776.60.7726
5-Band SF Bay Tour - Medium692.40.8666
5-Band SF Bay Tour - Med/High648.70.9249
5-Band SF Bay Tour - High629.20.9536
Chicago-Mac Upwind0.8781
Chicago-Mac All Purpose0.9060
Chicago-Mac Downwind0.9293
Bayview-Mac Cove Island0.6922
Bayview-Mac Shore0.6978
Harvest Moon Regatta526.11.1405
ORC Ref  04310003VB1Issued on 07/07/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org
Double HandedClub Certificate2025
Double JUSA 63281
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-29Measurement09/08/2005HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA8.961Max. Beam3.389Draft1.784Displacement3,021Wetted area17.72IMS L7.696LSM07.553Acc. length8.961Sink (kg/mm) 13.76
VCGD0.168VCGM0.154RM Rated (kg·m) 68.4Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRDPBW
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P11.470IG12.980ISP12.980MDT10.102MDL10.150MDT20.100MDL20.100TL1.900MW0.150GO0.168
E3.690J3.650BAS1.360FSD0.032SFJ0.000SPL3.720WPLTPSBD0.115MWT87.00MCG3.900
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date09/08/2005
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04310003VB1Issued on 07/07/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org
Double HandedClub Certificate2025
Double JUSA 63281
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment010.120.771.392.403.1825.47
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment010.080.631.192.403.705.1113.22NoNo 32.77
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment112.2212.2212.226.576.4166.58
ORC Ref  04310003VB1Issued on 07/07/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org