Non Spin/HSFClub Certificate2025
Dubbel DuckNOR 8856
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 Angles42.1°42.1°40.3°38.6°38.2°38.4°38.6°39.7°43.0°
Beat VMG2.573.474.124.444.554.594.604.564.33
52°4.025.245.956.276.396.466.506.536.45
60°4.285.486.116.426.586.666.726.786.76
75°4.435.636.226.566.806.967.057.207.25
90°4.315.546.206.586.897.157.357.647.81
110°3.704.995.886.406.797.167.518.248.85
120°3.424.695.666.256.657.027.408.269.59
135°2.944.135.125.886.366.727.087.879.04
150°2.423.504.495.335.976.416.757.458.32
Run VMG2.093.033.904.685.395.976.397.057.75
Gybe Angles146.5°146.5°153.8°161.3°171.8°179.0°179.7°179.9°179.7°
APH ToD:622.7CDL: 7.092APH ToT: 0.9636CertNo:676004
BOAT
ClassOne Off 1/2 tonDesignerD.DuckmanBuilderOneOffAge dateSeries date01/1983Offset fileHALFTONNER-NOR8856.offData file676004
HULL
Length Overall9.152 mMaximum Beam3.324 mDraft1.501 mDisplacement2,030 kgDLR7.3750IMS DivisionPerformanceDynamic Allowance0.090%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.360m
CREW
Maximum weight373 kg(default)Minimum weight243 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail27.4727.95Headsail Luffed21.7821.78Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail8.45Storm Jib5.63Heavy Weather Jib15.20
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ Spinnaker pole aboard
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.
Non Spin/HSFClub Certificate2025
Dubbel DuckNOR 8856
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 VMG1403.31036.2874.5810.0791.1784.5781.9789.8831.5
52°895.6686.9604.7574.5563.2557.6553.9551.1558.2
60°840.6656.4588.9561.0547.4540.9536.1530.8532.6
75°812.3639.8578.5548.7529.5517.4510.3500.0496.4
90°834.7650.2580.6546.9522.7503.6489.5471.4460.9
110°971.7721.7612.1562.3530.3503.1479.6437.1406.6
120°1054.0766.9635.9575.7541.3512.7486.6435.8375.6
135°1224.0871.8702.7612.4566.2535.5508.6457.7398.1
150°1490.01028.3801.8675.9602.9562.0533.0483.2432.7
Run VMG1723.91187.4923.0769.7668.0602.9563.6510.4464.3
Selected Courses
Windward / Leeward1560.81111.8898.7789.8729.6693.7672.8650.1647.9
All purpose1160.6850.9709.9640.9603.9581.1564.9541.5528.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward760.80.7886
All purpose622.70.9636
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7157
Downwind "popa"0.8038
70% up, 30% down "Ilhabela"0.7401
30% up, 70% down "Ilhabela-inverso"0.7752
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Predominantly Upwind662.60.9055
Predominantly Downwind642.40.9341
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low780.40.7689
Triple Number AP Medium619.40.9686
Triple Number AP High560.21.0711
Triple Number Windward/Leeward Low1050.20.5713
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Single Number Predominant Upwind685.50.8753
Single Number Predominant Reaching617.20.9722
Single Number Predominant Downwind670.90.8943
Predominant Upwind - Low895.50.6700
Predominant Upwind - Low/Med709.70.8454
Predominant Upwind - Medium645.50.9295
Predominant Upwind - Med/High615.10.9755
Predominant Upwind - High604.60.9924
Predominant Downwind Low981.60.6113
Predominant Downwind Low/Med728.80.8232
Predominant Downwind Medium620.40.9671
Predominant Downwind Med/High553.11.0848
Predominant Downwind High514.21.1669
Predominant Reaching Low831.70.7214
Predominant Reaching Low/Med652.60.9194
Predominant Reaching Medium581.71.0315
Predominant Reaching Med/High537.71.1159
Predominant Reaching High511.41.1732
SA/DSPL Upwind30.66SA/DSPL Downwind30.66
Scoring OptionTODTOT
5-Band Windward/Leeward Low1171.50.5122
5-Band Windward/Leeward Low/Med866.70.6922
5-Band Windward/Leeward Medium742.90.8076
5-Band Windward/Leeward Med/High677.20.8859
5-Band Windward/Leeward High653.70.9179
Windward/Leeward 60-40 Low1154.70.5196
Windward/Leeward 60-40 Low/Med866.00.6928
Windward/Leeward 60-40 Medium754.20.7956
Windward/Leeward 60-40 Med/High698.70.8587
Windward/Leeward 60-40 High682.10.8797
5-Band AP Low866.20.6927
5-Band AP Low/Med690.70.8687
5-Band AP Medium611.80.9807
5-Band AP Med/High567.01.0582
5-Band AP High543.31.1043
5-Band SF Bay Tour - Low1004.70.5972
5-Band SF Bay Tour - Low/Med827.50.7251
5-Band SF Bay Tour - Medium719.90.8334
5-Band SF Bay Tour - Med/High664.60.9028
5-Band SF Bay Tour - High642.80.9335
Chicago-Mac Upwind0.8539
Chicago-Mac All Purpose0.8625
Chicago-Mac Downwind0.8617
Bayview-Mac Cove Island0.6409
Bayview-Mac Shore0.6484
Harvest Moon Regatta543.11.1047
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance676.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating668.90.8970
FinRating, kevyt tuuli1152.30.8678
FinRating, kova tuuli545.40.9168
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8866
Triple Number Coastal/Long Distance Low0.7689
Triple Number Coastal/Long Distance Medium0.9687
Triple Number Coastal/Long Distance High1.0711
Triple Number Windward/Leeward Low0.5969
Triple Number Windward/Leeward Medium0.7949
Triple Number Windward/Leeward High0.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
For information
General Purpose Handicap (GPH)694.4
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low780.3
Triple Number Coastal/Long Distance Medium619.4
Triple Number Coastal/Long Distance High560.2
Triple Number Windward/Leeward Low1005.2
Triple Number Windward/Leeward Medium754.8
Triple Number Windward/Leeward High669.5
Predominantly Upwind662.6
Predominantly Downwind642.4
Predominantly Reaching610.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7689
Triple Number Coastal/Long Distance Medium0.9687
Triple Number Coastal/Long Distance High1.0711
Triple Number Windward/Leeward Low0.5969
Triple Number Windward/Leeward Medium0.7949
Triple Number Windward/Leeward High0.8962
Coastal/Long Distance0.8866
Predominantly Upwind0.9055
Predominantly Downwind0.9341
For information
General Purpose Handicap (GPH)694.4
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9636
Distanseseilas Trippeltall svak vind0.7689
Distanseseilas Trippeltall mellomvind0.9687
Distanseseilas Trippeltall sterk vind1.0711
Pølsebane Trippeltall svak vind0.5969
Pølsebane Trippeltall mellomvind0.7949
Pølsebane Trippeltall sterk vind0.8962
Motvind Singeltall0.9055
Medvind Singeltall0.9341
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Coastal/Long Distance676.80.8866
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind662.60.9055
Predominantly Downwind642.40.9341
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore648.60.9251
Cape Doctor Coastal532.51.1268
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7689
Triple Number Coastal/Long Distance Medium0.9687
Triple Number Coastal/Long Distance High1.0711
Triple Number Windward/Leeward Low0.5969
Triple Number Windward/Leeward Medium0.7949
Triple Number Windward/Leeward High0.8962
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7689
Triple Number Coastal/Long Distance Medium0.9687
Triple Number Coastal/Long Distance High1.0711
Triple Number Windward/Leeward Low0.5969
Triple Number Windward/Leeward Medium0.7949
Triple Number Windward/Leeward High0.8962
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Predominantly Upwind662.60.9055
Predominantly Downwind642.40.9341
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.80.8866
Triple Number Coastal/Long Distance Low780.30.7689
Triple Number Coastal/Long Distance Medium619.40.9687
Triple Number Coastal/Long Distance High560.21.0711
Triple Number Windward/Leeward Low1005.20.5969
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1681.21119.4849.3717.4643.5603.1570.7514.3492.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low780.40.7689
Triple Number AP Medium619.40.9686
Triple Number AP High560.21.0711
Triple Number Windward/Leeward Low1050.20.5713
Triple Number Windward/Leeward Medium754.80.7949
Triple Number Windward/Leeward High669.50.8962
Single Number Predominant Upwind685.50.8753
Single Number Predominant Reaching617.20.9722
Single Number Predominant Downwind670.90.8943
Predominant Upwind - Low895.50.6700
Predominant Upwind - Low/Med709.70.8454
Predominant Upwind - Medium645.50.9295
Predominant Upwind - Med/High615.10.9755
Predominant Upwind - High604.60.9924
Predominant Downwind Low981.60.6113
Predominant Downwind Low/Med728.80.8232
Predominant Downwind Medium620.40.9671
Predominant Downwind Med/High553.11.0848
Predominant Downwind High514.21.1669
Predominant Reaching Low831.70.7214
Predominant Reaching Low/Med652.60.9194
Predominant Reaching Medium581.71.0315
Predominant Reaching Med/High537.71.1159
Predominant Reaching High511.41.1732
SA/DSPL Upwind30.66SA/DSPL Downwind30.66
Scoring OptionTODTOT
5-Band Windward/Leeward Low1171.50.5122
5-Band Windward/Leeward Low/Med866.70.6922
5-Band Windward/Leeward Medium742.90.8076
5-Band Windward/Leeward Med/High677.20.8859
5-Band Windward/Leeward High653.70.9179
Windward/Leeward 60-40 Low1154.70.5196
Windward/Leeward 60-40 Low/Med866.00.6928
Windward/Leeward 60-40 Medium754.20.7956
Windward/Leeward 60-40 Med/High698.70.8587
Windward/Leeward 60-40 High682.10.8797
5-Band AP Low866.20.6927
5-Band AP Low/Med690.70.8687
5-Band AP Medium611.80.9807
5-Band AP Med/High567.01.0582
5-Band AP High543.31.1043
5-Band SF Bay Tour - Low1004.70.5972
5-Band SF Bay Tour - Low/Med827.50.7251
5-Band SF Bay Tour - Medium719.90.8334
5-Band SF Bay Tour - Med/High664.60.9028
5-Band SF Bay Tour - High642.80.9335
Chicago-Mac Upwind0.8539
Chicago-Mac All Purpose0.8625
Chicago-Mac Downwind0.8617
Bayview-Mac Cove Island0.6409
Bayview-Mac Shore0.6484
Harvest Moon Regatta543.11.1047
Non Spin/HSFClub Certificate2025
Dubbel DuckNOR 8856
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassOne Off 1/2 tonMeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.152Max. Beam3.324Draft1.501Displacement2,030Wetted area13.84IMS L7.058LSM06.504Acc. length9.152Sink (kg/mm) 10.40
VCGD-0.032VCGM0.062RM Rated (kg·m) 47.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight373Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.360PBWPIPA0.0012
PSD0.000PHD0.000PHL0.000
PSA0.0°ESL0.000
ST10.000ST20.000ST30.000
ST40.000ST50.000
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays2CheckstaysSpreaders2Rotating mastNo
P11.300IG10.610ISP10.690MDT10.090MDL10.110MDT20.000MDL20.000TLTaperMW0.000GO0.000
E4.270J3.120BAS1.310FSDFoilSFJ0.120SPL3.240WPLTPS0.000BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.032Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
Dubbel DuckNOR 8856
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment460-2021091501190.230.851.492.563.4327.4714/09/2021
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment460-2021091511240.030.501.082.053.214.4710.13NoNo 21.7815/09/2021460-2021091511250.030.501.082.053.214.4710.13NoNo 21.7815/09/2021460-2021091501210.700.360.661.402.163.980.00NoNo 18.1314/09/2021