Club
Certificate
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°4.134.895.395.655.805.875.91
60°4.355.115.555.795.946.046.11
75°4.485.235.685.926.096.236.41
90°4.465.355.836.096.276.386.59
110°4.515.405.886.196.446.677.06
120°4.375.275.806.116.376.647.20
135°3.914.825.515.916.206.477.05
150°3.374.305.065.615.966.226.73
Run VMG2.923.734.425.045.545.896.39
Gybe Angles148.4°152.9°156.8°166.7°177.2°179.0°179.0°

APH: 700.1

CDL: 5.961

GPH: 786.8

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 Allowance0.410%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 FlyingSymmetric27.4231.78Asymmetric
STORM SAIL AREAS (m²)
Trysail4.59Storm Jib3.57Heavy Weather Jib9.62
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  03440002M9MIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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 VMG1336.41107.1983.3912.2879.0867.4868.9
52°871.7735.5668.4637.7621.0613.0608.7
60°827.7705.1648.3622.2606.2596.4589.7
75°804.1687.7633.7607.9591.1577.9561.9
90°807.0672.8617.6591.4574.2564.3546.2
110°797.8667.2611.8582.0559.2539.7509.7
120°823.8683.0620.4589.2564.7542.3500.1
135°920.5746.2653.1608.8580.9556.8510.3
150°1068.3837.8712.1641.4604.5578.8534.6
Run VMG1233.5965.1814.7715.0649.7611.5563.6
Selected Courses
Windward / Leeward1285.01036.1899.0813.6764.4739.4716.2
All purpose993.4815.7724.3673.6644.7627.2605.0
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward854.40.7023
All purpose700.10.8570
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6039
Downwind "popa"0.7563
70% up, 30% down "Ilhabela"0.6428
30% up, 70% down "Ilhabela-inverso"0.7031
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Predominantly Upwind759.70.7898
Predominantly Downwind706.50.8492
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low904.60.6633
Triple Number All Purpose Medium695.10.8632
Triple Number All Purpose High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Predominantly Upwind759.70.7898
Predominantly Downwind706.50.8492
Predominantly Upwind Low1015.60.5908
Predominantly Upwind Medium785.80.7636
Predominantly Upwind High727.30.8249
Predominantly Downwind Low977.20.6140
Predominantly Downwind Medium694.90.8635
Predominantly Downwind High586.91.0223
Chicago-Mac Upwind0.7741
Chicago-Mac All Purpose0.8014
Chicago-Mac Downwind0.8345
Bayview-Mac Cove Island0.7435
Bayview-Mac Shore0.7487
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching665.40.9017
Predominantly Reaching Low819.70.7320
Predominantly Reaching Medium658.40.9113
Predominantly Reaching High586.11.0237
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1265.80.4740
5-Band Low / Medium1059.60.5662
5-Band Medium832.00.7212
5-Band Medium / High745.90.8044
5-Band High720.30.8330
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance760.9
Triple Number Coastal/Long Distance Low904.6
Triple Number Coastal/Long Distance Medium695.1
Triple Number Coastal/Long Distance High623.2
Triple Number Windward/Leeward Low1160.5
Triple Number Windward/Leeward Medium848.3
Triple Number Windward/Leeward High737.0
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6633
Triple Number Coastal/Long Distance Medium0.8632
Triple Number Coastal/Long Distance High0.9627
Triple Number Windward/Leeward Low0.5170
Triple Number Windward/Leeward Medium0.7073
Triple Number Windward/Leeward High0.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low904.6
Triple Number Coastal/Long Distance Medium695.1
Triple Number Coastal/Long Distance High623.2
Triple Number Windward/Leeward Low1160.5
Triple Number Windward/Leeward Medium848.3
Triple Number Windward/Leeward High737.0
Predominantly Upwind759.7
Predominantly Downwind706.5
Predominantly Reaching680.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6633
Triple Number Coastal/Long Distance Medium0.8632
Triple Number Coastal/Long Distance High0.9627
Triple Number Windward/Leeward Low0.5170
Triple Number Windward/Leeward Medium0.7073
Triple Number Windward/Leeward High0.8141
Coastal/Long Distance0.7885
Predominantly Upwind0.7898
Predominantly Downwind0.8492
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6633
Tretall Distanseseilas Mellomvind0.8632
Tretall Distanseseilas Mye vind0.9627
Tretall Pølsebane Lite vind0.5170
Tretall Pølsebane Mellomvind0.7073
Tretall Pølsebane Mye vind0.8141
Distanseseilas ett tall (OSN 8-16kn)0.7885
Distanseseilas ett tall (APH 6-20kn)0.8570
Enkeltall Motvind0.7898
Enkeltall Medvind0.8492
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Coastal/Long Distance760.90.7885
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind759.70.7898
Predominantly Downwind706.50.8492
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore723.20.8296
Cape Doctor Coastal611.60.9810
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6633
Triple Number Coastal/Long Distance Medium0.8632
Triple Number Coastal/Long Distance High0.9627
Triple Number Windward/Leeward Low0.5170
Triple Number Windward/Leeward Medium0.7073
Triple Number Windward/Leeward High0.8141
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6633
Triple Number Coastal/Long Distance Medium0.8632
Triple Number Coastal/Long Distance High0.9627
Triple Number Windward/Leeward Low0.5170
Triple Number Windward/Leeward Medium0.7073
Triple Number Windward/Leeward High0.8141
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Predominantly Upwind759.70.7898
Predominantly Downwind706.50.8492
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance760.90.7885
Triple Number Coastal/Long Distance Low904.60.6633
Triple Number Coastal/Long Distance Medium695.10.8632
Triple Number Coastal/Long Distance High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1279.8973.8812.6718.0668.3633.8578.4
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low904.60.6633
Triple Number All Purpose Medium695.10.8632
Triple Number All Purpose High623.20.9627
Triple Number Windward/Leeward Low1160.50.5170
Triple Number Windward/Leeward Medium848.30.7073
Triple Number Windward/Leeward High737.00.8141
Predominantly Upwind759.70.7898
Predominantly Downwind706.50.8492
Predominantly Upwind Low1015.60.5908
Predominantly Upwind Medium785.80.7636
Predominantly Upwind High727.30.8249
Predominantly Downwind Low977.20.6140
Predominantly Downwind Medium694.90.8635
Predominantly Downwind High586.91.0223
Chicago-Mac Upwind0.7741
Chicago-Mac All Purpose0.8014
Chicago-Mac Downwind0.8345
Bayview-Mac Cove Island0.7435
Bayview-Mac Shore0.7487
Harvest Moon Regatta609.70.9841
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy728.10.8241
San Francisco Bay Medium846.50.7088
Predominantly Reaching665.40.9017
Predominantly Reaching Low819.70.7320
Predominantly Reaching Medium658.40.9113
Predominantly Reaching High586.11.0237
Windward/Leeward 60-40 Low1172.80.5116
Windward/Leeward 60-40 Medium880.80.6812
Windward/Leeward 60-40 High782.50.7667
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1265.80.4740
5-Band Low / Medium1059.60.5662
5-Band Medium832.00.7212
5-Band Medium / High745.90.8044
5-Band High720.30.8330
ORC Ref  03440002M9MIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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 L6.564LSM06.431Acc. 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  03440002M9MIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment474-2014062514408.198.198.193.585.7727.4225/06/2014Spinnakern er asymetrisk, men ikke nok til å klassifiseres som asym.spinnaker. Den har målene ASLU 8,570, ASLE 7,80, ASHW 3,58 og ASF 5,77. Jeg har satt opp SL = ASLU+ASLE/2x0dx0aSMW er ikke målt.
ORC Ref  03440002M9MIssued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org