Club
Certificate
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 Angles42.1°40.2°38.7°38.2°38.4°38.7°40.0°
Beat VMG3.484.124.434.544.584.604.53
52°5.255.956.266.396.466.506.52
60°5.496.116.416.576.666.726.77
75°5.636.226.566.806.967.077.19
90°5.546.206.596.897.157.367.63
110°5.376.236.717.107.447.758.20
120°5.206.106.617.057.457.888.81
135°4.675.676.296.737.167.618.81
150°3.954.985.816.366.777.168.08
Run VMG3.424.315.085.726.256.667.41
Gybe Angles145.7°150.7°155.9°166.4°177.2°179.0°178.4°

APH: 605.3

CDL: 7.068

GPH: 671.5

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 weight373 kgMinimum weight280 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.

Club
Certificate
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 VMG1035.0874.4811.8792.6785.3782.5794.6
52°686.0604.7575.0563.6557.3553.7552.3
60°655.7588.8561.3547.7540.4535.7531.6
75°639.3578.6548.9529.5517.1509.4501.0
90°649.7580.6546.2522.6503.5489.1471.8
110°669.9578.2536.7506.8483.6464.8439.1
120°692.9590.4544.5511.0483.0457.0408.7
135°770.5634.9571.9534.8503.1473.3408.6
150°910.9723.3619.6566.3532.1502.5445.6
Run VMG1051.8835.0708.6629.3575.6540.9485.8
Selected Courses
Windward / Leeward1043.4854.7760.2711.0680.5661.7640.2
All purpose806.4681.0621.6589.8568.9553.3530.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward737.20.8138
All purpose605.30.9912
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7147
Downwind "popa"0.8701
70% up, 30% down "Ilhabela"0.7552
30% up, 70% down "Ilhabela-inverso"0.8168
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Predominantly Upwind653.50.9182
Predominantly Downwind611.50.9811
Custom scoring options for Canada
Scoring OptionTime On
Distance
Time On
Time
Triple Number All Purpose Low743.70.8068
Triple Number All Purpose Medium602.80.9954
Triple Number All Purpose High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Predominantly Upwind653.50.9182
Predominantly Downwind611.50.9811
Predominantly Upwind Low815.10.7361
Predominantly Upwind Medium676.60.8868
Predominantly Upwind High653.20.9185
Predominantly Downwind Low819.70.7320
Predominantly Downwind Medium607.80.9871
Predominantly Downwind High508.21.1807
Chicago-Mac Upwind0.9040
Chicago-Mac All Purpose0.9328
Chicago-Mac Downwind0.9654
Bayview-Mac Cove Island0.8828
Bayview-Mac Shore0.8894
Scoring OptionTime On
Distance
Time On
Time
Predominantly Reaching576.71.0403
Predominantly Reaching Low680.10.8822
Predominantly Reaching Medium572.91.0473
Predominantly Reaching High510.01.1764
5-Band
Windward/Leeward
Time On
Distance
Time On
Time
5-Band Low1028.90.5832
5-Band Low / Medium876.20.6847
5-Band Medium721.80.8312
5-Band Medium / High665.40.9018
5-Band High643.90.9318
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance655.5
Triple Number Coastal/Long Distance Low743.7
Triple Number Coastal/Long Distance Medium602.8
Triple Number Coastal/Long Distance High548.7
Triple Number Windward/Leeward Low949.1
Triple Number Windward/Leeward Medium731.7
Triple Number Windward/Leeward High658.3
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8068
Triple Number Coastal/Long Distance Medium0.9954
Triple Number Coastal/Long Distance High1.0934
Triple Number Windward/Leeward Low0.6322
Triple Number Windward/Leeward Medium0.8200
Triple Number Windward/Leeward High0.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low743.7
Triple Number Coastal/Long Distance Medium602.8
Triple Number Coastal/Long Distance High548.7
Triple Number Windward/Leeward Low949.1
Triple Number Windward/Leeward Medium731.7
Triple Number Windward/Leeward High658.3
Predominantly Upwind653.5
Predominantly Downwind611.5
Predominantly Reaching588.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8068
Triple Number Coastal/Long Distance Medium0.9954
Triple Number Coastal/Long Distance High1.0934
Triple Number Windward/Leeward Low0.6322
Triple Number Windward/Leeward Medium0.8200
Triple Number Windward/Leeward High0.9114
Coastal/Long Distance0.9153
Predominantly Upwind0.9182
Predominantly Downwind0.9811
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8068
Tretall Distanseseilas Mellomvind0.9954
Tretall Distanseseilas Mye vind1.0934
Tretall Pølsebane Lite vind0.6322
Tretall Pølsebane Mellomvind0.8200
Tretall Pølsebane Mye vind0.9114
Distanseseilas ett tall (OSN 8-16kn)0.9153
Distanseseilas ett tall (APH 6-20kn)0.9912
Enkeltall Motvind0.9182
Enkeltall Medvind0.9811
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Coastal/Long Distance655.50.9153
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind653.50.9182
Predominantly Downwind611.50.9811
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore646.60.9279
Cape Doctor Coastal537.51.1162
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8068
Triple Number Coastal/Long Distance Medium0.9954
Triple Number Coastal/Long Distance High1.0934
Triple Number Windward/Leeward Low0.6322
Triple Number Windward/Leeward Medium0.8200
Triple Number Windward/Leeward High0.9114
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8068
Triple Number Coastal/Long Distance Medium0.9954
Triple Number Coastal/Long Distance High1.0934
Triple Number Windward/Leeward Low0.6322
Triple Number Windward/Leeward Medium0.8200
Triple Number Windward/Leeward High0.9114
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Predominantly Upwind653.50.9182
Predominantly Downwind611.50.9811
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.50.9153
Triple Number Coastal/Long Distance Low743.70.8068
Triple Number Coastal/Long Distance Medium602.80.9954
Triple Number Coastal/Long Distance High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1044.3807.9692.5628.2590.1557.8502.0
Custom scoring options for United States of America
Scoring OptionTime On
Distance
Time On
Time
Triple Number All Purpose Low743.70.8068
Triple Number All Purpose Medium602.80.9954
Triple Number All Purpose High548.71.0934
Triple Number Windward/Leeward Low949.10.6322
Triple Number Windward/Leeward Medium731.70.8200
Triple Number Windward/Leeward High658.30.9114
Predominantly Upwind653.50.9182
Predominantly Downwind611.50.9811
Predominantly Upwind Low815.10.7361
Predominantly Upwind Medium676.60.8868
Predominantly Upwind High653.20.9185
Predominantly Downwind Low819.70.7320
Predominantly Downwind Medium607.80.9871
Predominantly Downwind High508.21.1807
Chicago-Mac Upwind0.9040
Chicago-Mac All Purpose0.9328
Chicago-Mac Downwind0.9654
Bayview-Mac Cove Island0.8828
Bayview-Mac Shore0.8894
Harvest Moon Regatta526.21.1402
Scoring OptionTime On
Distance
Time On
Time
San Francisco Bay Heavy646.00.9289
San Francisco Bay Medium724.00.8287
Predominantly Reaching576.71.0403
Predominantly Reaching Low680.10.8822
Predominantly Reaching Medium572.91.0473
Predominantly Reaching High510.01.1764
Windward/Leeward 60-40 Low950.20.6315
Windward/Leeward 60-40 Medium756.30.7933
Windward/Leeward 60-40 High702.30.8543
5-Band
Windward/Leeward
Time On
Distance
Time On
Time
5-Band Low1028.90.5832
5-Band Low / Medium876.20.6847
5-Band Medium721.80.8312
5-Band Medium / High665.40.9018
5-Band High643.90.9318

Club
Certificate
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 L7.037LSM06.504Acc. 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

Club
Certificate
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