Club 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 Angles45.0°45.0°43.4°42.3°41.0°40.0°39.8°40.5°42.3°
Beat VMG2.012.793.423.884.234.454.534.504.34
52°3.184.345.215.806.186.416.526.566.49
60°3.404.615.486.036.376.596.726.796.76
75°3.544.775.656.226.556.776.957.167.21
90°3.574.895.886.466.776.927.037.397.62
110°3.634.985.996.576.927.227.487.808.04
120°3.494.815.836.486.877.207.528.118.53
135°3.104.345.386.176.657.007.348.048.99
150°2.573.724.765.636.286.707.027.668.42
Run VMG2.223.224.134.905.586.126.537.157.74
Gybe Angles147.3°147.3°151.4°154.6°161.0°167.5°176.3°177.9°177.3°
APH ToD:638.2CDL: 7.140APH ToT: 0.9402CertNo: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 weight491 kg(default)Minimum weight361 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.
Club 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 VMG1790.71288.31052.0928.0850.1808.1795.0799.1829.1
52°1133.8829.8690.6620.7582.5561.4551.9548.8554.4
60°1058.1781.6657.3596.8565.0546.1535.7530.1532.3
75°1016.4754.2637.0579.1550.0531.7517.9502.9499.6
90°1009.5735.9611.9557.1532.1520.4512.3487.0472.7
110°992.6723.0601.2548.3520.0498.3481.3461.3447.6
120°1033.0748.5617.4555.7523.9499.9479.0444.0422.0
135°1160.8829.1669.8583.6541.4514.1490.5447.8400.3
150°1402.4968.6756.3639.8573.1537.5512.5469.7427.7
Run VMG1620.91118.4872.4734.5645.0588.1550.9503.8465.4
Selected Courses
Windward / Leeward1704.71203.4962.2831.2747.6698.1673.0651.4647.2
All purpose1288.9924.5752.7663.9612.4582.3564.9544.7535.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward786.40.7630
All purpose638.20.9402
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6441
Downwind "popa"0.8378
70% up, 30% down "Ilhabela"0.6921
30% up, 70% down "Ilhabela-inverso"0.7685
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Predominantly Upwind698.80.8586
Predominantly Downwind639.40.9384
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low838.60.7155
Triple Number AP Medium633.80.9466
Triple Number AP High561.71.0682
Triple Number Windward/Leeward Low1132.00.5300
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Single Number Predominant Upwind730.30.8215
Single Number Predominant Reaching634.10.9462
Single Number Predominant Downwind669.00.8969
Predominant Upwind - Low1036.20.5790
Predominant Upwind - Low/Med779.00.7702
Predominant Upwind - Medium673.40.8910
Predominant Upwind - Med/High621.00.9662
Predominant Upwind - High607.20.9882
Predominant Downwind Low995.20.6029
Predominant Downwind Low/Med728.10.8241
Predominant Downwind Medium614.20.9769
Predominant Downwind Med/High547.41.0962
Predominant Downwind High511.81.1723
Predominant Reaching Low897.80.6683
Predominant Reaching Low/Med675.80.8878
Predominant Reaching Medium587.91.0206
Predominant Reaching Med/High540.61.1099
Predominant Reaching High514.71.1657
SA/DSPL Upwind17.47SA/DSPL Downwind34.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1268.70.4729
5-Band Windward/Leeward Low/Med919.90.6523
5-Band Windward/Leeward Medium764.90.7844
5-Band Windward/Leeward Med/High679.80.8826
5-Band Windward/Leeward High654.40.9168
Windward/Leeward 60-40 Low1285.90.4666
Windward/Leeward 60-40 Low/Med938.60.6393
Windward/Leeward 60-40 Medium785.60.7638
Windward/Leeward 60-40 Med/High704.30.8519
Windward/Leeward 60-40 High684.30.8768
5-Band AP Low923.50.6497
5-Band AP Low/Med726.00.8265
5-Band AP Medium623.70.9621
5-Band AP Med/High568.41.0555
5-Band AP High546.61.0977
5-Band SF Bay Tour - Low1095.90.5475
5-Band SF Bay Tour - Low/Med883.50.6792
5-Band SF Bay Tour - Medium742.10.8085
5-Band SF Bay Tour - Med/High666.40.9003
5-Band SF Bay Tour - High643.50.9324
Chicago-Mac Upwind0.7924
Chicago-Mac All Purpose0.8300
Chicago-Mac Downwind0.8635
Bayview-Mac Cove Island0.5977
Bayview-Mac Shore0.6015
Harvest Moon Regatta548.81.0932
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance695.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating695.30.8629
FinRating, kevyt tuuli1243.30.8043
FinRating, kova tuuli550.20.9087
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8629
Triple Number Coastal/Long Distance Low0.7155
Triple Number Coastal/Long Distance Medium0.9468
Triple Number Coastal/Long Distance High1.0682
Triple Number Windward/Leeward Low0.5541
Triple Number Windward/Leeward Medium0.7683
Triple Number Windward/Leeward High0.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
For information
General Purpose Handicap (GPH)720.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low838.6
Triple Number Coastal/Long Distance Medium633.7
Triple Number Coastal/Long Distance High561.7
Triple Number Windward/Leeward Low1082.8
Triple Number Windward/Leeward Medium780.9
Triple Number Windward/Leeward High671.2
Predominantly Upwind698.8
Predominantly Downwind639.4
Predominantly Reaching616.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7155
Triple Number Coastal/Long Distance Medium0.9468
Triple Number Coastal/Long Distance High1.0682
Triple Number Windward/Leeward Low0.5541
Triple Number Windward/Leeward Medium0.7683
Triple Number Windward/Leeward High0.8939
Coastal/Long Distance0.8629
Predominantly Upwind0.8586
Predominantly Downwind0.9384
For information
General Purpose Handicap (GPH)720.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9402
Distanseseilas Trippeltall svak vind0.7155
Distanseseilas Trippeltall mellomvind0.9468
Distanseseilas Trippeltall sterk vind1.0682
Pølsebane Trippeltall svak vind0.5541
Pølsebane Trippeltall mellomvind0.7683
Pølsebane Trippeltall sterk vind0.8939
Motvind Singeltall0.8586
Medvind Singeltall0.9384
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Coastal/Long Distance695.30.8629
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind698.80.8586
Predominantly Downwind639.40.9384
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore648.50.9252
Cape Doctor Coastal538.11.1150
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7155
Triple Number Coastal/Long Distance Medium0.9468
Triple Number Coastal/Long Distance High1.0682
Triple Number Windward/Leeward Low0.5541
Triple Number Windward/Leeward Medium0.7683
Triple Number Windward/Leeward High0.8939
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7155
Triple Number Coastal/Long Distance Medium0.9468
Triple Number Coastal/Long Distance High1.0682
Triple Number Windward/Leeward Low0.5541
Triple Number Windward/Leeward Medium0.7683
Triple Number Windward/Leeward High0.8939
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Predominantly Upwind698.80.8586
Predominantly Downwind639.40.9384
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance695.30.8629
Triple Number Coastal/Long Distance Low838.60.7155
Triple Number Coastal/Long Distance Medium633.70.9468
Triple Number Coastal/Long Distance High561.71.0682
Triple Number Windward/Leeward Low1082.80.5541
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.51194.9901.9747.8654.3604.3570.8518.2505.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low838.60.7155
Triple Number AP Medium633.80.9466
Triple Number AP High561.71.0682
Triple Number Windward/Leeward Low1132.00.5300
Triple Number Windward/Leeward Medium780.90.7683
Triple Number Windward/Leeward High671.20.8939
Single Number Predominant Upwind730.30.8215
Single Number Predominant Reaching634.10.9462
Single Number Predominant Downwind669.00.8969
Predominant Upwind - Low1036.20.5790
Predominant Upwind - Low/Med779.00.7702
Predominant Upwind - Medium673.40.8910
Predominant Upwind - Med/High621.00.9662
Predominant Upwind - High607.20.9882
Predominant Downwind Low995.20.6029
Predominant Downwind Low/Med728.10.8241
Predominant Downwind Medium614.20.9769
Predominant Downwind Med/High547.41.0962
Predominant Downwind High511.81.1723
Predominant Reaching Low897.80.6683
Predominant Reaching Low/Med675.80.8878
Predominant Reaching Medium587.91.0206
Predominant Reaching Med/High540.61.1099
Predominant Reaching High514.71.1657
SA/DSPL Upwind17.47SA/DSPL Downwind34.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1268.70.4729
5-Band Windward/Leeward Low/Med919.90.6523
5-Band Windward/Leeward Medium764.90.7844
5-Band Windward/Leeward Med/High679.80.8826
5-Band Windward/Leeward High654.40.9168
Windward/Leeward 60-40 Low1285.90.4666
Windward/Leeward 60-40 Low/Med938.60.6393
Windward/Leeward 60-40 Medium785.60.7638
Windward/Leeward 60-40 Med/High704.30.8519
Windward/Leeward 60-40 High684.30.8768
5-Band AP Low923.50.6497
5-Band AP Low/Med726.00.8265
5-Band AP Medium623.70.9621
5-Band AP Med/High568.41.0555
5-Band AP High546.61.0977
5-Band SF Bay Tour - Low1095.90.5475
5-Band SF Bay Tour - Low/Med883.50.6792
5-Band SF Bay Tour - Medium742.10.8085
5-Band SF Bay Tour - Med/High666.40.9003
5-Band SF Bay Tour - High643.50.9324
Chicago-Mac Upwind0.7924
Chicago-Mac All Purpose0.8300
Chicago-Mac Downwind0.8635
Bayview-Mac Cove Island0.5977
Bayview-Mac Shore0.6015
Harvest Moon Regatta548.81.0932
Club 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 L8.108LSM07.886Acc. length9.040Sink (kg/mm) 14.37
VCGD0.180VCGM0.218RM Rated (kg·m) 68.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight491Declared 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
Club 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.