Double HandedClub Certificate2025
AlidaNOR 9479
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 Angles44.5°44.5°42.6°41.7°41.2°41.2°41.5°42.9°45.7°
Beat VMG2.042.823.443.884.144.214.234.133.84
52°3.224.355.185.766.096.226.266.235.98
60°3.444.615.435.996.326.476.526.536.42
75°3.594.805.646.186.526.726.846.936.93
90°3.574.875.826.376.596.807.007.287.39
110°3.675.005.986.556.897.157.327.577.64
120°3.524.855.856.486.877.207.497.908.18
135°3.134.385.426.206.687.047.398.109.02
150°2.593.754.805.676.316.737.077.768.59
Run VMG2.243.254.164.945.616.156.567.207.83
Gybe Angles147.1°147.1°151.2°154.6°161.2°167.3°175.4°177.2°176.3°
APH ToD:645.1CDL: 6.931APH ToT: 0.9301CertNo:666839
BOAT
ClassDUFOUR 30 CLASSICDesignerOlivierPoncinandJ&JDesignsBuilderDufour YachtsAge date01/1999Series date01/1996Offset fileDU30CLAS.offData file666839
HULL
Length Overall9.040 mMaximum Beam3.040 mDraft1.559 mDisplacement3,536 kgDLR7.2064IMS DivisionCruiser/RacerDynamic Allowance0.340%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.360m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail21.9522.36Headsail Luffed18.7518.75Headsail FlyingSymmetric57.7757.77Asymmetric
STORM SAIL AREAS (m²)
Trysail6.64Storm Jib6.59Heavy Weather Jib17.80
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.
Double HandedClub Certificate2025
AlidaNOR 9479
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 VMG1762.71275.51047.0928.2870.5854.5852.0872.4936.7
52°1117.8827.3695.0624.6590.7578.4574.7578.0601.7
60°1046.1781.0662.8600.9569.9556.5552.0551.3561.1
75°1003.1750.3638.8582.2552.5536.0526.2519.2519.2
90°1008.1739.4618.1564.9546.0529.5514.4494.5487.0
110°981.8719.8602.0549.9522.4503.3492.0475.7471.3
120°1021.4742.7615.0555.3523.7500.1480.6455.8440.1
135°1149.9821.4664.1580.5539.1511.3487.2444.6399.1
150°1388.8960.3750.5635.4570.4534.9509.0464.2418.9
Run VMG1604.91108.8865.9729.5641.7585.8549.0500.0459.7
Selected Courses
Windward / Leeward1682.31192.2956.5828.8756.1720.1700.5686.2698.2
All purpose1273.6918.2751.0664.4618.8595.4581.3567.2569.0
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward796.20.7536
All purpose645.10.9301
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6269
Downwind "popa"0.8433
70% up, 30% down "Ilhabela"0.6791
30% up, 70% down "Ilhabela-inverso"0.7641
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Predominantly Upwind709.70.8454
Predominantly Downwind640.50.9367
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low834.60.7189
Triple Number AP Medium639.20.9387
Triple Number AP High579.51.0353
Triple Number Windward/Leeward Low1122.50.5345
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Single Number Predominant Upwind742.20.8085
Single Number Predominant Reaching639.50.9382
Single Number Predominant Downwind670.40.8949
Predominant Upwind - Low1028.80.5832
Predominant Upwind - Low/Med780.30.7690
Predominant Upwind - Medium684.80.8761
Predominant Upwind - Med/High646.20.9286
Predominant Upwind - High642.80.9334
Predominant Downwind Low987.90.6073
Predominant Downwind Low/Med726.10.8263
Predominant Downwind Medium616.50.9732
Predominant Downwind Med/High553.11.0848
Predominant Downwind High520.31.1531
Predominant Reaching Low894.00.6712
Predominant Reaching Low/Med677.50.8856
Predominant Reaching Medium594.31.0097
Predominant Reaching Med/High549.81.0913
Predominant Reaching High528.31.1358
SA/DSPL Upwind17.47SA/DSPL Downwind34.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1256.20.4776
5-Band Windward/Leeward Low/Med916.60.6546
5-Band Windward/Leeward Medium774.30.7749
5-Band Windward/Leeward Med/High706.10.8498
5-Band Windward/Leeward High690.80.8686
Windward/Leeward 60-40 Low1273.00.4713
Windward/Leeward 60-40 Low/Med935.80.6411
Windward/Leeward 60-40 Medium797.60.7523
Windward/Leeward 60-40 Med/High736.30.8148
Windward/Leeward 60-40 High728.60.8235
5-Band AP Low917.40.6540
5-Band AP Low/Med725.60.8269
5-Band AP Medium630.30.9519
5-Band AP Med/High584.41.0266
5-Band AP High570.01.0527
5-Band SF Bay Tour - Low1086.40.5523
5-Band SF Bay Tour - Low/Med880.70.6813
5-Band SF Bay Tour - Medium751.80.7981
5-Band SF Bay Tour - Med/High692.80.8660
5-Band SF Bay Tour - High680.40.8818
Chicago-Mac Upwind0.7840
Chicago-Mac All Purpose0.8249
Chicago-Mac Downwind0.8632
Bayview-Mac Cove Island0.5998
Bayview-Mac Shore0.6035
Harvest Moon Regatta552.11.0867
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance701.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating701.50.8553
FinRating, kevyt tuuli1231.30.8121
FinRating, kova tuuli573.50.8718
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8553
Triple Number Coastal/Long Distance Low0.7189
Triple Number Coastal/Long Distance Medium0.9388
Triple Number Coastal/Long Distance High1.0353
Triple Number Windward/Leeward Low0.5585
Triple Number Windward/Leeward Medium0.7614
Triple Number Windward/Leeward High0.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
For information
General Purpose Handicap (GPH)725.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low834.6
Triple Number Coastal/Long Distance Medium639.1
Triple Number Coastal/Long Distance High579.5
Triple Number Windward/Leeward Low1074.3
Triple Number Windward/Leeward Medium788.0
Triple Number Windward/Leeward High700.0
Predominantly Upwind709.7
Predominantly Downwind640.5
Predominantly Reaching619.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7189
Triple Number Coastal/Long Distance Medium0.9388
Triple Number Coastal/Long Distance High1.0353
Triple Number Windward/Leeward Low0.5585
Triple Number Windward/Leeward Medium0.7614
Triple Number Windward/Leeward High0.8571
Coastal/Long Distance0.8553
Predominantly Upwind0.8454
Predominantly Downwind0.9367
For information
General Purpose Handicap (GPH)725.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9301
Distanseseilas Trippeltall svak vind0.7189
Distanseseilas Trippeltall mellomvind0.9388
Distanseseilas Trippeltall sterk vind1.0353
Pølsebane Trippeltall svak vind0.5585
Pølsebane Trippeltall mellomvind0.7614
Pølsebane Trippeltall sterk vind0.8571
Motvind Singeltall0.8454
Medvind Singeltall0.9367
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Coastal/Long Distance701.50.8553
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind709.70.8454
Predominantly Downwind640.50.9367
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore694.60.8638
Cape Doctor Coastal568.51.0554
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7189
Triple Number Coastal/Long Distance Medium0.9388
Triple Number Coastal/Long Distance High1.0353
Triple Number Windward/Leeward Low0.5585
Triple Number Windward/Leeward Medium0.7614
Triple Number Windward/Leeward High0.8571
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7189
Triple Number Coastal/Long Distance Medium0.9388
Triple Number Coastal/Long Distance High1.0353
Triple Number Windward/Leeward Low0.5585
Triple Number Windward/Leeward Medium0.7614
Triple Number Windward/Leeward High0.8571
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Predominantly Upwind709.70.8454
Predominantly Downwind640.50.9367
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance701.50.8553
Triple Number Coastal/Long Distance Low834.60.7189
Triple Number Coastal/Long Distance Medium639.10.9388
Triple Number Coastal/Long Distance High579.51.0353
Triple Number Windward/Leeward Low1074.30.5585
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1771.41183.8897.5747.0661.6618.2585.3534.3529.2
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low834.60.7189
Triple Number AP Medium639.20.9387
Triple Number AP High579.51.0353
Triple Number Windward/Leeward Low1122.50.5345
Triple Number Windward/Leeward Medium788.00.7614
Triple Number Windward/Leeward High700.00.8571
Single Number Predominant Upwind742.20.8085
Single Number Predominant Reaching639.50.9382
Single Number Predominant Downwind670.40.8949
Predominant Upwind - Low1028.80.5832
Predominant Upwind - Low/Med780.30.7690
Predominant Upwind - Medium684.80.8761
Predominant Upwind - Med/High646.20.9286
Predominant Upwind - High642.80.9334
Predominant Downwind Low987.90.6073
Predominant Downwind Low/Med726.10.8263
Predominant Downwind Medium616.50.9732
Predominant Downwind Med/High553.11.0848
Predominant Downwind High520.31.1531
Predominant Reaching Low894.00.6712
Predominant Reaching Low/Med677.50.8856
Predominant Reaching Medium594.31.0097
Predominant Reaching Med/High549.81.0913
Predominant Reaching High528.31.1358
SA/DSPL Upwind17.47SA/DSPL Downwind34.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1256.20.4776
5-Band Windward/Leeward Low/Med916.60.6546
5-Band Windward/Leeward Medium774.30.7749
5-Band Windward/Leeward Med/High706.10.8498
5-Band Windward/Leeward High690.80.8686
Windward/Leeward 60-40 Low1273.00.4713
Windward/Leeward 60-40 Low/Med935.80.6411
Windward/Leeward 60-40 Medium797.60.7523
Windward/Leeward 60-40 Med/High736.30.8148
Windward/Leeward 60-40 High728.60.8235
5-Band AP Low917.40.6540
5-Band AP Low/Med725.60.8269
5-Band AP Medium630.30.9519
5-Band AP Med/High584.41.0266
5-Band AP High570.01.0527
5-Band SF Bay Tour - Low1086.40.5523
5-Band SF Bay Tour - Low/Med880.70.6813
5-Band SF Bay Tour - Medium751.80.7981
5-Band SF Bay Tour - Med/High692.80.8660
5-Band SF Bay Tour - High680.40.8818
Chicago-Mac Upwind0.7840
Chicago-Mac All Purpose0.8249
Chicago-Mac Downwind0.8632
Bayview-Mac Cove Island0.5998
Bayview-Mac Shore0.6035
Harvest Moon Regatta552.11.0867
Double HandedClub Certificate2025
AlidaNOR 9479
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 30 CLASSICMeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.040Max. Beam3.040Draft1.559Displacement3,536Wetted area18.59IMS L7.977LSM07.886Acc. length9.040Sink (kg/mm) 14.37
VCGD0.180VCGM0.218RM Rated (kg·m) 68.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.360PBWPIPA0.0031
EDL1.610ST10.035ST20.180
ST30.180ST40.100ST50.290
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P10.190IG11.480ISP11.480MDT10.120MDL10.180MDT20.120MDL20.180TL0.000MW0.000GO0.000
E3.720J3.340BAS1.630FSDFoilSFJ0.000SPL3.420WPLTPS0.000BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.180Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
AlidaNOR 9479
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment372-2015040212000.130.741.342.303.0521.9502/04/2015
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment372-2015040212010.040.410.781.612.533.5211.14NoNo 18.7502/04/2015
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment372-20170405210010.6810.6710.686.606.0757.7705/04/2017
CRUISER/RACER REQUIREMENTS*
Accommodation length9.0 mTable area0.44 m²Headroom1.62 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity60 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity30 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.