Club
Certificate
Non Spinnaker
2023

Boat

The three Cs

NOR 4281

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 Angles43.9°42.3°41.5°39.9°39.0°38.8°39.4°
Beat VMG2.693.253.663.954.104.154.14
52°4.134.905.395.655.805.875.91
60°4.355.115.555.795.946.046.10
75°4.485.245.685.926.096.236.41
90°4.395.175.655.956.156.336.60
110°4.054.925.545.906.166.396.83
120°3.854.745.405.816.086.316.78
135°3.434.335.045.575.906.146.59
150°2.973.864.595.215.655.946.38
Run VMG2.573.374.084.705.255.656.15
Gybe Angles152.0°157.7°167.6°173.0°176.6°179.0°179.5°

APH: 723.2

CDL: 5.962

GPH: 816.9

CertNo: 666811

BOAT
ClassDUFOUR 1800DesignerCORDELLE LAURENTBuilderDufour YachtsAge date01/1979Series date01/1979Offset fileg1042.offData file666811
HULL
Length Overall7.350 mMaximum Beam2.630 mDraft1.315 mDisplacement2,195 kgDLR8.2518IMS DivisionCruiser/RacerDynamic Allowance0.400%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight367 kgMinimum weight275 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail14.8115.04Headsail Luffed15.8515.85Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail4.59Storm Jib3.57Heavy Weather Jib9.62
SAIL LIMITS
Headsails5  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.
ORC Ref  03440002MBKIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

The three Cs

NOR 4281

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 VMG1335.91106.8983.0912.0879.0867.5869.1
52°871.5735.3668.2637.6620.9613.1608.7
60°827.4704.9648.2622.1606.2596.4589.7
75°803.8687.5633.5607.8591.1577.8561.9
90°819.4696.1636.7605.5584.9568.5545.9
110°889.2731.3649.6609.9584.8563.7527.4
120°934.6760.2666.3619.6592.3570.6531.1
135°1051.0832.3714.0646.7610.6586.5546.5
150°1213.5933.7784.3691.6637.5606.3564.1
Run VMG1399.51068.8882.5765.2686.0637.1585.3
Selected Courses
Windward / Leeward1367.71087.8932.8838.6782.5752.3727.2
All purpose1052.9856.1751.8693.1659.4639.5616.8
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward883.40.6792
All purpose723.20.8296
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6040
Downwind "popa"0.6972
70% up, 30% down "Ilhabela"0.6292
30% up, 70% down "Ilhabela-inverso"0.6663
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Predominantly Upwind773.20.7760
Predominantly Downwind745.40.8049
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low954.50.6286
Triple Number All Purpose Medium717.80.8359
Triple Number All Purpose High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Predominantly Upwind773.20.7760
Predominantly Downwind745.40.8049
Predominantly Upwind Low1041.50.5761
Predominantly Upwind Medium790.30.7592
Predominantly Upwind High729.70.8223
Predominantly Downwind Low1066.20.5627
Predominantly Downwind Medium740.80.8100
Predominantly Downwind High610.60.9827
Chicago-Mac Upwind0.7605
Chicago-Mac All Purpose0.7732
Chicago-Mac Downwind0.7891
Bayview-Mac Cove Island0.7161
Bayview-Mac Shore0.7273
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching689.40.8703
Predominantly Reaching Low869.70.6899
Predominantly Reaching Medium686.00.8747
Predominantly Reaching High600.10.9998
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1346.20.4457
5-Band Low / Medium1114.10.5385
5-Band Medium858.40.6989
5-Band Medium / High760.40.7891
5-Band High731.50.8202
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance787.4
Triple Number Coastal/Long Distance Low954.5
Triple Number Coastal/Long Distance Medium717.8
Triple Number Coastal/Long Distance High636.0
Triple Number Windward/Leeward Low1227.7
Triple Number Windward/Leeward Medium876.7
Triple Number Windward/Leeward High750.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6286
Triple Number Coastal/Long Distance Medium0.8359
Triple Number Coastal/Long Distance High0.9434
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6844
Triple Number Windward/Leeward High0.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low954.5
Triple Number Coastal/Long Distance Medium717.8
Triple Number Coastal/Long Distance High636.0
Triple Number Windward/Leeward Low1227.7
Triple Number Windward/Leeward Medium876.7
Triple Number Windward/Leeward High750.5
Predominantly Upwind773.2
Predominantly Downwind745.4
Predominantly Reaching710.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6286
Triple Number Coastal/Long Distance Medium0.8359
Triple Number Coastal/Long Distance High0.9434
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6844
Triple Number Windward/Leeward High0.7995
Coastal/Long Distance0.7620
Predominantly Upwind0.7760
Predominantly Downwind0.8049
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6286
Tretall Distanseseilas Mellomvind0.8359
Tretall Distanseseilas Mye vind0.9434
Tretall Pølsebane Lite vind0.4887
Tretall Pølsebane Mellomvind0.6844
Tretall Pølsebane Mye vind0.7995
Distanseseilas ett tall (OSN 8-16kn)0.7620
Distanseseilas ett tall (APH 6-20kn)0.8296
Enkeltall Motvind0.7760
Enkeltall Medvind0.8049
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Coastal/Long Distance787.40.7620
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind773.20.7760
Predominantly Downwind745.40.8049
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore734.70.8167
Cape Doctor Coastal623.70.9621
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6286
Triple Number Coastal/Long Distance Medium0.8359
Triple Number Coastal/Long Distance High0.9434
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6844
Triple Number Windward/Leeward High0.7995
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6286
Triple Number Coastal/Long Distance Medium0.8359
Triple Number Coastal/Long Distance High0.9434
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6844
Triple Number Windward/Leeward High0.7995
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Predominantly Upwind773.20.7760
Predominantly Downwind745.40.8049
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance787.40.7620
Triple Number Coastal/Long Distance Low954.50.6286
Triple Number Coastal/Long Distance Medium717.80.8359
Triple Number Coastal/Long Distance High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1370.91025.0844.4738.9684.0646.8591.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low954.50.6286
Triple Number All Purpose Medium717.80.8359
Triple Number All Purpose High636.00.9434
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium876.70.6844
Triple Number Windward/Leeward High750.50.7995
Predominantly Upwind773.20.7760
Predominantly Downwind745.40.8049
Predominantly Upwind Low1041.50.5761
Predominantly Upwind Medium790.30.7592
Predominantly Upwind High729.70.8223
Predominantly Downwind Low1066.20.5627
Predominantly Downwind Medium740.80.8100
Predominantly Downwind High610.60.9827
Chicago-Mac Upwind0.7605
Chicago-Mac All Purpose0.7732
Chicago-Mac Downwind0.7891
Bayview-Mac Cove Island0.7161
Bayview-Mac Shore0.7273
Harvest Moon Regatta630.20.9521
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy742.50.8081
San Francisco Bay Medium875.80.6851
Predominantly Reaching689.40.8703
Predominantly Reaching Low869.70.6899
Predominantly Reaching Medium686.00.8747
Predominantly Reaching High600.10.9998
Windward/Leeward 60-40 Low1226.50.4892
Windward/Leeward 60-40 Medium899.60.6670
Windward/Leeward 60-40 High791.40.7581
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1346.20.4457
5-Band Low / Medium1114.10.5385
5-Band Medium858.40.6989
5-Band Medium / High760.40.7891
5-Band High731.50.8202
ORC Ref  03440002MBKIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

The three Cs

NOR 4281

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 1800MeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA7.350Max. Beam2.630Draft1.315Displacement2,195Wetted area12.76IMS L6.563LSM06.431Acc. length7.350Sink (kg/mm) 9.12
VCGD0.000VCGM0.041RM Rated (kg·m) 28.1Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P8.500IG8.440ISP8.440MDT10.085MDL10.125MDT20.085MDL20.125TL0.000MW0.000GO0.000
E3.080J3.100BAS1.210FSD0.000SFJ0.000SPL2.220WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.000Flotation Date01/01/2015MeasurerComment
SFFP0.417FFMFF0.919LCFcl4.027SG1.0300
SAFP7.326FAMFA0.869LCFsh4.233HBI0.871
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002MBKIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

The three Cs

NOR 4281

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment474-2014062514310.130.581.051.832.4914.8125/06/2014
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment474-2014062514300.050.450.871.812.894.008.31NoNo 15.8525/06/2014
ORC Ref  03440002MBKIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org