Club
Certificate
Double Handed
2023

Boat

Dubbel Duck

NOR 8856

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles41.8°39.6°38.8°39.9°40.2°40.8°43.5°
Beat VMG3.514.044.224.284.294.274.10
52°5.255.856.066.156.196.216.15
60°5.476.036.256.356.416.456.44
75°5.626.176.466.636.746.816.88
90°5.566.176.536.807.017.167.32
110°5.406.206.656.997.267.467.77
120°5.246.106.607.017.397.768.36
135°4.725.716.316.757.187.648.91
150°3.995.025.836.376.797.218.22
Run VMG3.464.355.115.746.266.677.47
Gybe Angles145.7°150.5°156.5°168.2°177.2°179.0°178.4°

APH: 619.7

CDL: 6.587

GPH: 682.9

CertNo: 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 DivisionCruiser/RacerDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.360m
CREW
Maximum weight170 kgMinimum weight120 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail27.4727.95Headsail Luffed21.7821.78Headsail FlyingSymmetric47.7347.73Asymmetric
STORM SAIL AREAS (m²)
Trysail8.45Storm Jib5.63Heavy Weather Jib15.20
SAIL LIMITS
Headsails5  Spinnakers4
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  03440002NK4Issued on 02/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Dubbel Duck

NOR 8856

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1025.1892.0854.0841.5838.7842.2878.2
52°685.6615.2594.1585.3581.2579.4585.1
60°658.1597.1576.1566.7561.4558.3559.1
75°640.7583.7557.6543.1534.3528.5523.3
90°647.3583.2551.3529.6513.7503.1491.7
110°667.1580.9541.7514.7495.8482.6463.0
120°687.2590.1545.6513.5487.5463.9430.8
135°762.4631.0570.8533.0501.1471.2404.0
150°901.8717.5617.0565.4530.3499.6437.9
Run VMG1041.3828.1704.5627.0574.7539.5482.2
Selected Courses
Windward / Leeward1033.2860.0779.3734.3706.7690.8680.2
All purpose800.8685.4634.0605.4586.9573.9559.0
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward758.20.7913
All purpose619.70.9682
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6805
Downwind "popa"0.8755
70% up, 30% down "Ilhabela"0.7293
30% up, 70% down "Ilhabela-inverso"0.8062
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Predominantly Upwind673.80.8905
Predominantly Downwind615.70.9745
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low743.10.8074
Triple Number All Purpose Medium617.00.9725
Triple Number All Purpose High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Predominantly Upwind673.80.8905
Predominantly Downwind615.70.9745
Predominantly Upwind Low817.00.7344
Predominantly Upwind Medium705.40.8506
Predominantly Upwind High696.40.8616
Predominantly Downwind Low815.20.7360
Predominantly Downwind Medium608.70.9856
Predominantly Downwind High511.21.1738
Chicago-Mac Upwind0.8759
Chicago-Mac All Purpose0.9152
Chicago-Mac Downwind0.9587
Bayview-Mac Cove Island0.8737
Bayview-Mac Shore0.8764
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching585.41.0250
Predominantly Reaching Low679.00.8836
Predominantly Reaching Medium580.11.0342
Predominantly Reaching High522.61.1480
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1019.90.5883
5-Band Low / Medium881.40.6807
5-Band Medium743.90.8065
5-Band Medium / High695.40.8628
5-Band High682.00.8797
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance670.6
Triple Number Coastal/Long Distance Low743.1
Triple Number Coastal/Long Distance Medium617.0
Triple Number Coastal/Long Distance High571.6
Triple Number Windward/Leeward Low946.7
Triple Number Windward/Leeward Medium752.8
Triple Number Windward/Leeward High690.8
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8074
Triple Number Coastal/Long Distance Medium0.9725
Triple Number Coastal/Long Distance High1.0497
Triple Number Windward/Leeward Low0.6338
Triple Number Windward/Leeward Medium0.7970
Triple Number Windward/Leeward High0.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low743.1
Triple Number Coastal/Long Distance Medium617.0
Triple Number Coastal/Long Distance High571.6
Triple Number Windward/Leeward Low946.7
Triple Number Windward/Leeward Medium752.8
Triple Number Windward/Leeward High690.8
Predominantly Upwind673.8
Predominantly Downwind615.7
Predominantly Reaching594.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8074
Triple Number Coastal/Long Distance Medium0.9725
Triple Number Coastal/Long Distance High1.0497
Triple Number Windward/Leeward Low0.6338
Triple Number Windward/Leeward Medium0.7970
Triple Number Windward/Leeward High0.8685
Coastal/Long Distance0.8948
Predominantly Upwind0.8905
Predominantly Downwind0.9745
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8074
Tretall Distanseseilas Mellomvind0.9725
Tretall Distanseseilas Mye vind1.0497
Tretall Pølsebane Lite vind0.6338
Tretall Pølsebane Mellomvind0.7970
Tretall Pølsebane Mye vind0.8685
Distanseseilas ett tall (OSN 8-16kn)0.8948
Distanseseilas ett tall (APH 6-20kn)0.9682
Enkeltall Motvind0.8905
Enkeltall Medvind0.9745
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Coastal/Long Distance670.60.8948
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind673.80.8905
Predominantly Downwind615.70.9745
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore683.40.8780
Cape Doctor Coastal563.51.0648
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8074
Triple Number Coastal/Long Distance Medium0.9725
Triple Number Coastal/Long Distance High1.0497
Triple Number Windward/Leeward Low0.6338
Triple Number Windward/Leeward Medium0.7970
Triple Number Windward/Leeward High0.8685
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8074
Triple Number Coastal/Long Distance Medium0.9725
Triple Number Coastal/Long Distance High1.0497
Triple Number Windward/Leeward Low0.6338
Triple Number Windward/Leeward Medium0.7970
Triple Number Windward/Leeward High0.8685
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Predominantly Upwind673.80.8905
Predominantly Downwind615.70.9745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance670.60.8948
Triple Number Coastal/Long Distance Low743.10.8074
Triple Number Coastal/Long Distance Medium617.00.9725
Triple Number Coastal/Long Distance High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1034.0812.4707.9646.3608.8577.2525.6
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low743.10.8074
Triple Number All Purpose Medium617.00.9725
Triple Number All Purpose High571.61.0497
Triple Number Windward/Leeward Low946.70.6338
Triple Number Windward/Leeward Medium752.80.7970
Triple Number Windward/Leeward High690.80.8685
Predominantly Upwind673.80.8905
Predominantly Downwind615.70.9745
Predominantly Upwind Low817.00.7344
Predominantly Upwind Medium705.40.8506
Predominantly Upwind High696.40.8616
Predominantly Downwind Low815.20.7360
Predominantly Downwind Medium608.70.9856
Predominantly Downwind High511.21.1738
Chicago-Mac Upwind0.8759
Chicago-Mac All Purpose0.9152
Chicago-Mac Downwind0.9587
Bayview-Mac Cove Island0.8737
Bayview-Mac Shore0.8764
Harvest Moon Regatta534.21.1231
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy678.10.8848
San Francisco Bay Medium743.80.8067
Predominantly Reaching585.41.0250
Predominantly Reaching Low679.00.8836
Predominantly Reaching Medium580.11.0342
Predominantly Reaching High522.61.1480
Windward/Leeward 60-40 Low949.00.6322
Windward/Leeward 60-40 Medium785.60.7638
Windward/Leeward 60-40 High746.60.8036
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1019.90.5883
5-Band Low / Medium881.40.6807
5-Band Medium743.90.8065
5-Band Medium / High695.40.8628
5-Band High682.00.8797
ORC Ref  03440002NK4Issued on 02/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Dubbel Duck

NOR 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 L6.877LSM06.504Acc. length9.152Sink (kg/mm) 10.40
VCGD-0.032VCGM0.062RM Rated (kg·m) 47.3Limit of positive stability(°) N/AStability IndexN/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 FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays2Spreaders2Rotating mastNo
P11.300IG10.610ISP10.690MDT10.090MDL10.110MDT20.000MDL20.000TLTaperMW0.000GO0.000
E4.270J3.120BAS1.310FSDFoilSFJ0.120SPL3.240WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.032Flotation Date01/01/2015MeasurerComment
SFFP0.409FFMFF1.010LCFcl4.858SG0.0000
SAFP8.037FAMFA0.980LCFsh5.128HBI0.980
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002NK4Issued on 02/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Dubbel Duck

NOR 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
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment460-20210915012210.1410.1410.145.685.5247.7314/09/2021
ORC Ref  03440002NK4Issued on 02/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org