Club Certificate2025
IJs Na!NED 6741
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 Angles43.7°43.7°41.7°40.1°38.9°38.2°37.7°37.8°38.5°
Beat VMG2.513.434.134.634.935.075.145.195.17
52°3.915.246.146.676.947.087.157.227.24
60°4.175.526.386.847.097.247.317.407.45
75°4.355.716.546.977.237.417.547.707.81
90°4.245.616.496.987.277.487.667.968.17
110°3.915.356.427.037.387.657.928.368.66
120°3.755.156.236.927.327.627.918.579.15
135°3.304.615.706.557.087.447.748.409.27
150°2.703.915.005.926.657.127.458.058.76
Run VMG2.343.384.345.155.886.486.947.578.13
Gybe Angles146.0°146.0°151.0°154.1°160.1°166.6°175.4°178.8°178.6°
APH ToD:576.9CDL: 8.951APH ToT: 1.0401CertNo:none
BOAT
ClassWinner 1120DesignerStadtBuilderWinnerAge date01/1997Series date03/1993Offset fileG_WN1120.bofData fileNED6741
HULL
Length Overall11.255 mMaximum Beam3.624 mDraft1.959 mDisplacement7,234 kgDLR8.9714IMS DivisionCruiser/RacerDynamic Allowance0.320%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.407m
CREW
Maximum weight621 kg(default)Minimum weight491 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail40.2040.90Headsail Luffed44.6944.69Headsail FlyingSymmetric82.8382.83Asymmetric
STORM SAIL AREAS (m²)
Trysail12.16Storm Jib9.20Heavy Weather Jib24.83
SAIL LIMITS
Headsails5
✱ One set on the forestay
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 Certificate2025
IJs Na!NED 6741
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 VMG1436.71051.1872.3778.0730.9710.7700.0693.2696.7
52°919.7687.7586.4539.5518.4508.4503.6498.8497.4
60°862.7652.5564.4526.0507.5497.3492.2486.3483.4
75°827.0630.8550.8516.3498.1485.9477.3467.5461.1
90°848.4641.6554.7515.7495.0481.6470.0452.0440.6
110°921.2673.0561.0512.2488.1470.5454.7430.6415.7
120°959.2698.4578.3519.9491.6472.6455.3420.3393.3
135°1090.1780.4631.5549.7508.4484.0465.0428.6388.2
150°1334.3921.4719.4607.8541.5505.8483.2447.4411.0
Run VMG1541.41063.9830.1698.6612.2555.8519.1475.3442.7
Selected Courses
Windward / Leeward1486.91057.5851.2738.3671.6633.3609.5584.2569.7
All purpose1118.6812.2669.5596.0555.9533.2518.1497.8483.0
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward703.90.8523
All purpose576.91.0401
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7586
Downwind "popa"0.8833
70% up, 30% down "Ilhabela"0.7922
30% up, 70% down "Ilhabela-inverso"0.8418
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Predominantly Upwind618.60.9699
Predominantly Downwind590.81.0156
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low740.90.8099
Triple Number AP Medium573.11.0469
Triple Number AP High514.31.1667
Triple Number Windward/Leeward Low996.50.6021
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Single Number Predominant Upwind642.40.9340
Single Number Predominant Reaching576.21.0413
Single Number Predominant Downwind617.40.9718
Predominant Upwind - Low878.80.6827
Predominant Upwind - Low/Med677.00.8863
Predominant Upwind - Medium598.71.0022
Predominant Upwind - Med/High560.61.0702
Predominant Upwind - High545.41.1001
Predominant Downwind Low907.10.6614
Predominant Downwind Low/Med670.20.8952
Predominant Downwind Medium569.01.0545
Predominant Downwind Med/High509.01.1788
Predominant Downwind High476.71.2587
Predominant Reaching Low792.80.7568
Predominant Reaching Low/Med610.80.9824
Predominant Reaching Medium538.81.1135
Predominant Reaching Med/High498.61.2034
Predominant Reaching High475.71.2614
SA/DSPL Upwind22.55SA/DSPL Downwind32.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low1113.80.5387
5-Band Windward/Leeward Low/Med815.30.7360
5-Band Windward/Leeward Medium686.10.8745
5-Band Windward/Leeward Med/High614.50.9764
5-Band Windward/Leeward High586.11.0237
Windward/Leeward 60-40 Low1111.60.5398
Windward/Leeward 60-40 Low/Med821.10.7307
Windward/Leeward 60-40 Medium697.80.8599
Windward/Leeward 60-40 Med/High632.20.9490
Windward/Leeward 60-40 High607.90.9870
5-Band AP Low819.80.7319
5-Band AP Low/Med647.80.9262
5-Band AP Medium565.11.0618
5-Band AP Med/High520.41.1530
5-Band AP High498.81.2030
5-Band SF Bay Tour - Low958.80.6258
5-Band SF Bay Tour - Low/Med779.40.7698
5-Band SF Bay Tour - Medium663.60.9041
5-Band SF Bay Tour - Med/High602.10.9965
5-Band SF Bay Tour - High576.61.0407
Chicago-Mac Upwind0.9058
Chicago-Mac All Purpose0.9246
Chicago-Mac Downwind0.9365
Bayview-Mac Cove Island0.6779
Bayview-Mac Shore0.6839
Harvest Moon Regatta507.11.1832
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance627.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9563
Triple Number Coastal/Long Distance Low0.8099
Triple Number Coastal/Long Distance Medium1.0470
Triple Number Coastal/Long Distance High1.1667
Triple Number Windward/Leeward Low0.6287
Triple Number Windward/Leeward Medium0.8581
Triple Number Windward/Leeward High0.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
For information
General Purpose Handicap (GPH)647.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low740.8
Triple Number Coastal/Long Distance Medium573.1
Triple Number Coastal/Long Distance High514.3
Triple Number Windward/Leeward Low954.4
Triple Number Windward/Leeward Medium699.2
Triple Number Windward/Leeward High606.0
Predominantly Upwind618.6
Predominantly Downwind590.8
Predominantly Reaching565.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8099
Triple Number Coastal/Long Distance Medium1.0470
Triple Number Coastal/Long Distance High1.1667
Triple Number Windward/Leeward Low0.6287
Triple Number Windward/Leeward Medium0.8581
Triple Number Windward/Leeward High0.9901
Coastal/Long Distance0.9563
Predominantly Upwind0.9699
Predominantly Downwind1.0156
For information
General Purpose Handicap (GPH)647.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0401
Distanseseilas Trippeltall svak vind0.8099
Distanseseilas Trippeltall mellomvind1.0470
Distanseseilas Trippeltall sterk vind1.1667
Pølsebane Trippeltall svak vind0.6287
Pølsebane Trippeltall mellomvind0.8581
Pølsebane Trippeltall sterk vind0.9901
Motvind Singeltall0.9699
Medvind Singeltall1.0156
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Coastal/Long Distance627.40.9563
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind618.60.9699
Predominantly Downwind590.81.0156
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore574.11.0451
Cape Doctor Coastal487.51.2308
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8099
Triple Number Coastal/Long Distance Medium1.0470
Triple Number Coastal/Long Distance High1.1667
Triple Number Windward/Leeward Low0.6287
Triple Number Windward/Leeward Medium0.8581
Triple Number Windward/Leeward High0.9901
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8099
Triple Number Coastal/Long Distance Medium1.0470
Triple Number Coastal/Long Distance High1.1667
Triple Number Windward/Leeward Low0.6287
Triple Number Windward/Leeward Medium0.8581
Triple Number Windward/Leeward High0.9901
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Predominantly Upwind618.60.9699
Predominantly Downwind590.81.0156
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance627.40.9563
Triple Number Coastal/Long Distance Low740.80.8099
Triple Number Coastal/Long Distance Medium573.11.0470
Triple Number Coastal/Long Distance High514.31.1667
Triple Number Windward/Leeward Low954.40.6287
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1585.51058.1801.8668.5591.7553.0524.4478.6462.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low740.90.8099
Triple Number AP Medium573.11.0469
Triple Number AP High514.31.1667
Triple Number Windward/Leeward Low996.50.6021
Triple Number Windward/Leeward Medium699.20.8581
Triple Number Windward/Leeward High606.00.9901
Single Number Predominant Upwind642.40.9340
Single Number Predominant Reaching576.21.0413
Single Number Predominant Downwind617.40.9718
Predominant Upwind - Low878.80.6827
Predominant Upwind - Low/Med677.00.8863
Predominant Upwind - Medium598.71.0022
Predominant Upwind - Med/High560.61.0702
Predominant Upwind - High545.41.1001
Predominant Downwind Low907.10.6614
Predominant Downwind Low/Med670.20.8952
Predominant Downwind Medium569.01.0545
Predominant Downwind Med/High509.01.1788
Predominant Downwind High476.71.2587
Predominant Reaching Low792.80.7568
Predominant Reaching Low/Med610.80.9824
Predominant Reaching Medium538.81.1135
Predominant Reaching Med/High498.61.2034
Predominant Reaching High475.71.2614
SA/DSPL Upwind22.55SA/DSPL Downwind32.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low1113.80.5387
5-Band Windward/Leeward Low/Med815.30.7360
5-Band Windward/Leeward Medium686.10.8745
5-Band Windward/Leeward Med/High614.50.9764
5-Band Windward/Leeward High586.11.0237
Windward/Leeward 60-40 Low1111.60.5398
Windward/Leeward 60-40 Low/Med821.10.7307
Windward/Leeward 60-40 Medium697.80.8599
Windward/Leeward 60-40 Med/High632.20.9490
Windward/Leeward 60-40 High607.90.9870
5-Band AP Low819.80.7319
5-Band AP Low/Med647.80.9262
5-Band AP Medium565.11.0618
5-Band AP Med/High520.41.1530
5-Band AP High498.81.2030
5-Band SF Bay Tour - Low958.80.6258
5-Band SF Bay Tour - Low/Med779.40.7698
5-Band SF Bay Tour - Medium663.60.9041
5-Band SF Bay Tour - Med/High602.10.9965
5-Band SF Bay Tour - High576.61.0407
Chicago-Mac Upwind0.9058
Chicago-Mac All Purpose0.9246
Chicago-Mac Downwind0.9365
Bayview-Mac Cove Island0.6779
Bayview-Mac Shore0.6839
Harvest Moon Regatta507.11.1832
Club Certificate2025
IJs Na!NED 6741
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassWinner 1120Measurement12/05/2001HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA11.255Max. Beam3.624Draft1.959Displacement7,234Wetted area28.51IMS L9.555LSM09.306Acc. length11.255Sink (kg/mm) 20.47
VCGD-0.118VCGM-0.039RM Rated (kg·m) 165.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight621Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.407PBWPIPA0.0006
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionFixedInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.000IG13.560ISP13.650MDT10.110MDL10.220MDT2MDL2TLTaperMWGO
E4.960J4.080BAS1.650FSDFoilSFJSPL4.060WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date12/05/2001
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
IJs Na!NED 6741
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.171.001.793.044.0840.20* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC6.200.00NoNo 44.69* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC0.0082.83* Auto Added *
CRUISER/RACER REQUIREMENTS*
Accommodation length11.3 mTable area0.55 m²Headroom1.78 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity133 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity76 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.