Double HandedClub Certificate2025
sJamaanNED 3501
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 Angles41.8°41.8°39.7°38.2°37.5°37.2°37.1°37.9°38.9°
Beat VMG2.803.784.474.824.975.045.085.094.94
52°4.305.656.476.816.957.027.067.107.04
60°4.545.886.646.977.127.207.257.307.28
75°4.676.026.757.117.317.457.537.667.71
90°4.535.906.707.137.407.627.798.018.17
110°4.135.616.667.187.517.747.928.168.49
120°4.005.476.547.147.547.908.208.638.90
135°3.514.936.096.867.357.778.189.1110.40
150°2.924.195.346.286.957.407.818.679.92
Run VMG2.533.634.625.476.166.727.167.928.75
Gybe Angles145.5°145.5°149.6°153.4°159.7°166.4°171.8°175.4°164.0°
APH ToD:560.3CDL: 8.795APH ToT: 1.0709CertNo:
BOAT
ClassJ-35DesignerJohnstoneBuilderJ-boatsAge date01/1989Series date01/1983Offset filej35.offData fileNED3501
HULL
Length Overall10.820 mMaximum Beam3.646 mDraft2.126 mDisplacement4,722 kgDLR6.6483IMS DivisionCruiser/RacerDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameterm
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail32.1432.73Headsail Luffed42.2742.27Headsail FlyingSymmetric85.8785.87Asymmetric
STORM SAIL AREAS (m²)
Trysail9.44Storm Jib10.16Heavy Weather Jib27.42
SAIL LIMITS
Headsails5Spinnakers4
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.
Double HandedClub Certificate2025
sJamaanNED 3501
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 VMG1286.3951.5805.0747.0724.7714.4709.1707.5728.1
52°836.8637.1556.7528.3517.9512.6509.7506.9511.3
60°793.7611.8541.8516.2505.5500.1496.8493.0494.4
75°770.3598.2533.4506.7492.2483.4478.2470.1466.7
90°795.0610.6537.3505.2486.4472.7462.3449.3440.9
110°871.4641.5540.8501.2479.4465.1454.5441.0423.9
120°899.8658.6550.5504.1477.2455.9439.0417.3404.4
135°1024.6730.1591.4524.4489.7463.4440.1395.3346.3
150°1234.4858.8674.8573.0518.0486.6461.1415.1362.8
Run VMG1425.0991.7779.1658.6584.4535.6503.0454.8411.6
Selected Courses
Windward / Leeward1353.9971.6792.1702.8654.5625.0606.0581.2569.9
All purpose1028.8754.7631.1574.2544.5526.1513.1494.2481.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward679.40.8832
All purpose560.31.0709
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7837
Downwind "popa"0.9318
70% up, 30% down "Ilhabela"0.8229
30% up, 70% down "Ilhabela-inverso"0.8818
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Predominantly Upwind601.60.9974
Predominantly Downwind566.31.0594
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low692.90.8659
Triple Number AP Medium557.11.0771
Triple Number AP High509.31.1782
Triple Number Windward/Leeward Low920.30.6520
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Single Number Predominant Upwind622.50.9639
Single Number Predominant Reaching556.01.0791
Single Number Predominant Downwind590.31.0165
Predominant Upwind - Low810.40.7404
Predominant Upwind - Low/Med643.70.9321
Predominant Upwind - Medium587.21.0218
Predominant Upwind - Med/High559.71.0720
Predominant Upwind - High547.81.0953
Predominant Downwind Low845.50.7097
Predominant Downwind Low/Med635.20.9446
Predominant Downwind Medium549.11.0927
Predominant Downwind Med/High494.71.2128
Predominant Downwind High460.31.3035
Predominant Reaching Low741.60.8091
Predominant Reaching Low/Med583.81.0277
Predominant Reaching Medium524.91.1431
Predominant Reaching Med/High489.01.2270
Predominant Reaching High466.41.2866
SA/DSPL Upwind26.30SA/DSPL Downwind41.71
Scoring OptionTODTOT
5-Band Windward/Leeward Low1022.70.5867
5-Band Windward/Leeward Low/Med766.70.7825
5-Band Windward/Leeward Medium665.00.9023
5-Band Windward/Leeward Med/High609.10.9850
5-Band Windward/Leeward High583.51.0282
Windward/Leeward 60-40 Low1017.90.5895
Windward/Leeward 60-40 Low/Med772.20.7770
Windward/Leeward 60-40 Medium678.40.8844
Windward/Leeward 60-40 Med/High629.50.9531
Windward/Leeward 60-40 High609.10.9851
5-Band AP Low765.70.7836
5-Band AP Low/Med616.40.9733
5-Band AP Medium550.91.0891
5-Band AP Med/High514.71.1656
5-Band AP High495.31.2115
5-Band SF Bay Tour - Low883.00.6795
5-Band SF Bay Tour - Low/Med733.90.8175
5-Band SF Bay Tour - Medium644.30.9312
5-Band SF Bay Tour - Med/High596.31.0062
5-Band SF Bay Tour - High573.11.0470
Chicago-Mac Upwind0.9407
Chicago-Mac All Purpose0.9643
Chicago-Mac Downwind0.9823
Bayview-Mac Cove Island0.7254
Bayview-Mac Shore0.7316
Harvest Moon Regatta492.21.2190
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance606.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9900
Triple Number Coastal/Long Distance Low0.8659
Triple Number Coastal/Long Distance Medium1.0772
Triple Number Coastal/Long Distance High1.1782
Triple Number Windward/Leeward Low0.6804
Triple Number Windward/Leeward Medium0.8893
Triple Number Windward/Leeward High0.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
For information
General Purpose Handicap (GPH)622.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low692.9
Triple Number Coastal/Long Distance Medium557.0
Triple Number Coastal/Long Distance High509.3
Triple Number Windward/Leeward Low881.8
Triple Number Windward/Leeward Medium674.7
Triple Number Windward/Leeward High601.4
Predominantly Upwind601.6
Predominantly Downwind566.3
Predominantly Reaching545.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8659
Triple Number Coastal/Long Distance Medium1.0772
Triple Number Coastal/Long Distance High1.1782
Triple Number Windward/Leeward Low0.6804
Triple Number Windward/Leeward Medium0.8893
Triple Number Windward/Leeward High0.9976
Coastal/Long Distance0.9900
Predominantly Upwind0.9974
Predominantly Downwind1.0594
For information
General Purpose Handicap (GPH)622.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0709
Distanseseilas Trippeltall svak vind0.8659
Distanseseilas Trippeltall mellomvind1.0772
Distanseseilas Trippeltall sterk vind1.1782
Pølsebane Trippeltall svak vind0.6804
Pølsebane Trippeltall mellomvind0.8893
Pølsebane Trippeltall sterk vind0.9976
Motvind Singeltall0.9974
Medvind Singeltall1.0594
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Coastal/Long Distance606.10.9900
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind601.60.9974
Predominantly Downwind566.31.0594
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore573.31.0466
Cape Doctor Coastal485.31.2364
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8659
Triple Number Coastal/Long Distance Medium1.0772
Triple Number Coastal/Long Distance High1.1782
Triple Number Windward/Leeward Low0.6804
Triple Number Windward/Leeward Medium0.8893
Triple Number Windward/Leeward High0.9976
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8659
Triple Number Coastal/Long Distance Medium1.0772
Triple Number Coastal/Long Distance High1.1782
Triple Number Windward/Leeward Low0.6804
Triple Number Windward/Leeward Medium0.8893
Triple Number Windward/Leeward High0.9976
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Predominantly Upwind601.60.9974
Predominantly Downwind566.31.0594
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.10.9900
Triple Number Coastal/Long Distance Low692.90.8659
Triple Number Coastal/Long Distance Medium557.01.0772
Triple Number Coastal/Long Distance High509.31.1782
Triple Number Windward/Leeward Low881.80.6804
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.4973.6748.9639.8578.8544.9517.8475.2463.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low692.90.8659
Triple Number AP Medium557.11.0771
Triple Number AP High509.31.1782
Triple Number Windward/Leeward Low920.30.6520
Triple Number Windward/Leeward Medium674.70.8893
Triple Number Windward/Leeward High601.40.9976
Single Number Predominant Upwind622.50.9639
Single Number Predominant Reaching556.01.0791
Single Number Predominant Downwind590.31.0165
Predominant Upwind - Low810.40.7404
Predominant Upwind - Low/Med643.70.9321
Predominant Upwind - Medium587.21.0218
Predominant Upwind - Med/High559.71.0720
Predominant Upwind - High547.81.0953
Predominant Downwind Low845.50.7097
Predominant Downwind Low/Med635.20.9446
Predominant Downwind Medium549.11.0927
Predominant Downwind Med/High494.71.2128
Predominant Downwind High460.31.3035
Predominant Reaching Low741.60.8091
Predominant Reaching Low/Med583.81.0277
Predominant Reaching Medium524.91.1431
Predominant Reaching Med/High489.01.2270
Predominant Reaching High466.41.2866
SA/DSPL Upwind26.30SA/DSPL Downwind41.71
Scoring OptionTODTOT
5-Band Windward/Leeward Low1022.70.5867
5-Band Windward/Leeward Low/Med766.70.7825
5-Band Windward/Leeward Medium665.00.9023
5-Band Windward/Leeward Med/High609.10.9850
5-Band Windward/Leeward High583.51.0282
Windward/Leeward 60-40 Low1017.90.5895
Windward/Leeward 60-40 Low/Med772.20.7770
Windward/Leeward 60-40 Medium678.40.8844
Windward/Leeward 60-40 Med/High629.50.9531
Windward/Leeward 60-40 High609.10.9851
5-Band AP Low765.70.7836
5-Band AP Low/Med616.40.9733
5-Band AP Medium550.91.0891
5-Band AP Med/High514.71.1656
5-Band AP High495.31.2115
5-Band SF Bay Tour - Low883.00.6795
5-Band SF Bay Tour - Low/Med733.90.8175
5-Band SF Bay Tour - Medium644.30.9312
5-Band SF Bay Tour - Med/High596.31.0062
5-Band SF Bay Tour - High573.11.0470
Chicago-Mac Upwind0.9407
Chicago-Mac All Purpose0.9643
Chicago-Mac Downwind0.9823
Bayview-Mac Cove Island0.7254
Bayview-Mac Shore0.7316
Harvest Moon Regatta492.21.2190
Double HandedClub Certificate2025
sJamaanNED 3501
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-35Measurement25/10/2023HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.820Max. Beam3.646Draft2.126Displacement4,722Wetted area23.60IMS L9.099LSM08.921Acc. length10.820Sink (kg/mm) 17.52
VCGD-0.004VCGM0.055RM Rated (kg·m) 111.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRDPBW
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P12.650IG14.250ISP14.300MDT10.105MDL10.188MDT2MDL2TLNo TaperMWGO
E4.260J4.460BAS1.480FSDSFJ0.000SPL4.571WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date25/10/2023
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
sJamaanNED 3501
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.881.612.7132.14
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.731.422.896.1913.92NoNo 42.27
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentestimated14.0014.0014.007.407.2085.87
CRUISER/RACER REQUIREMENTS*
Accommodation length10.8 mTable area0.55 m²Headroom1.75 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity120 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity66 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.