Double HandedClub Certificate2025
Jam SessionNED 6630
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 Angles43.9°43.9°41.7°40.3°39.2°38.6°38.4°38.5°39.5°
Beat VMG2.363.294.054.584.905.045.125.175.10
52°3.715.056.056.687.007.167.247.337.33
60°3.975.346.316.897.197.377.467.577.59
75°4.155.556.507.057.377.617.798.018.12
90°4.185.686.757.277.527.717.968.398.66
110°4.285.836.937.517.958.328.589.079.52
120°4.165.716.847.467.958.428.899.6910.51
135°3.685.166.357.147.668.168.6810.1012.79
150°3.044.345.496.457.127.588.018.9511.17
Run VMG2.643.764.755.596.206.637.027.789.67
Gybe Angles143.0°143.0°146.9°149.9°152.5°156.5°159.9°156.5°141.3°
APH ToD:557.6CDL: 8.951APH ToT: 1.0760CertNo:
BOAT
ClassJ-105DesignerR. JohnstoneBuilderJ Boats inc.Age date05/1998Series date01/1992Offset filej105-SD.offData fileNED6630
HULL
Length Overall10.570 mMaximum Beam3.344 mDraft1.752 mDisplacement4,508 kgDLR4.9186IMS DivisionPerformanceDynamic Allowance0.210%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameterm
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.5134.19Headsail Luffed24.3524.35Headsail FlyingSymmetricAsymmetric88.3788.37 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail9.88Storm Jib7.45Heavy Weather Jib20.10
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.
Double HandedClub Certificate2025
Jam SessionNED 6630
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 VMG1525.71093.0888.6785.4735.4714.7703.5696.1705.7
52°970.7712.7595.3538.7514.3503.0497.1491.3491.4
60°907.9673.9570.2522.4500.6488.8482.3475.3474.0
75°867.4648.6553.7510.7488.3473.2462.0449.5443.5
90°861.8633.6533.2495.2478.8467.0452.0429.2415.6
110°840.4617.4519.2479.2452.7432.6419.5396.8378.1
120°864.9630.7526.1482.7453.0427.6404.7371.5342.4
135°978.7698.3566.8504.3470.3441.3414.6356.6281.4
150°1182.6829.0655.8558.1505.3475.1449.4402.3322.3
Run VMG1365.9957.2757.2644.4581.0542.7512.9462.9372.1
Selected Courses
Windward / Leeward1445.61025.1822.9714.9658.2628.7608.2579.5538.9
All purpose1094.3788.4645.5575.0538.3516.6500.3475.4447.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward689.50.8702
All purpose557.61.0760
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7478
Downwind "popa"0.9421
70% up, 30% down "Ilhabela"0.7971
30% up, 70% down "Ilhabela-inverso"0.8739
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Predominantly Upwind609.10.9850
Predominantly Downwind559.61.0721
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low716.90.8369
Triple Number AP Medium554.11.0828
Triple Number AP High495.11.2120
Triple Number Windward/Leeward Low965.40.6215
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Single Number Predominant Upwind635.00.9448
Single Number Predominant Reaching552.11.0867
Single Number Predominant Downwind582.31.0303
Predominant Upwind - Low883.80.6789
Predominant Upwind - Low/Med669.70.8960
Predominant Upwind - Medium589.51.0178
Predominant Upwind - Med/High550.41.0901
Predominant Upwind - High531.11.1298
Predominant Downwind Low847.20.7082
Predominant Downwind Low/Med629.30.9535
Predominant Downwind Medium541.11.1088
Predominant Downwind Med/High485.01.2372
Predominant Downwind High440.81.3611
Predominant Reaching Low766.20.7831
Predominant Reaching Low/Med585.01.0256
Predominant Reaching Medium517.41.1597
Predominant Reaching Med/High475.61.2617
Predominant Reaching High443.71.3522
SA/DSPL Upwind21.10SA/DSPL Downwind44.44
Scoring OptionTODTOT
5-Band Windward/Leeward Low1079.70.5557
5-Band Windward/Leeward Low/Med790.30.7592
5-Band Windward/Leeward Medium672.30.8925
5-Band Windward/Leeward Med/High611.00.9820
5-Band Windward/Leeward High577.51.0390
Windward/Leeward 60-40 Low1093.80.5485
Windward/Leeward 60-40 Low/Med804.20.7461
Windward/Leeward 60-40 Medium687.90.8722
Windward/Leeward 60-40 Med/High630.20.9521
Windward/Leeward 60-40 High601.80.9971
5-Band AP Low788.00.7614
5-Band AP Low/Med625.90.9587
5-Band AP Medium546.51.0978
5-Band AP Med/High502.11.1951
5-Band AP High475.01.2633
5-Band SF Bay Tour - Low932.80.6433
5-Band SF Bay Tour - Low/Med757.10.7925
5-Band SF Bay Tour - Medium648.50.9252
5-Band SF Bay Tour - Med/High591.81.0139
5-Band SF Bay Tour - High560.21.0710
Chicago-Mac Upwind0.9156
Chicago-Mac All Purpose0.9563
Chicago-Mac Downwind0.9935
Bayview-Mac Cove Island0.6979
Bayview-Mac Shore0.7019
Harvest Moon Regatta481.01.2474
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance606.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating601.40.9976
FinRating, kevyt tuuli1057.90.9453
FinRating, kova tuuli475.61.0513
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9892
Triple Number Coastal/Long Distance Low0.8369
Triple Number Coastal/Long Distance Medium1.0829
Triple Number Coastal/Long Distance High1.2120
Triple Number Windward/Leeward Low0.6493
Triple Number Windward/Leeward Medium0.8779
Triple Number Windward/Leeward High0.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
For information
General Purpose Handicap (GPH)626.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low716.9
Triple Number Coastal/Long Distance Medium554.1
Triple Number Coastal/Long Distance High495.0
Triple Number Windward/Leeward Low924.1
Triple Number Windward/Leeward Medium683.4
Triple Number Windward/Leeward High602.6
Predominantly Upwind609.1
Predominantly Downwind559.6
Predominantly Reaching538.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8369
Triple Number Coastal/Long Distance Medium1.0829
Triple Number Coastal/Long Distance High1.2120
Triple Number Windward/Leeward Low0.6493
Triple Number Windward/Leeward Medium0.8779
Triple Number Windward/Leeward High0.9957
Coastal/Long Distance0.9892
Predominantly Upwind0.9850
Predominantly Downwind1.0721
For information
General Purpose Handicap (GPH)626.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0760
Distanseseilas Trippeltall svak vind0.8369
Distanseseilas Trippeltall mellomvind1.0829
Distanseseilas Trippeltall sterk vind1.2120
Pølsebane Trippeltall svak vind0.6493
Pølsebane Trippeltall mellomvind0.8779
Pølsebane Trippeltall sterk vind0.9957
Motvind Singeltall0.9850
Medvind Singeltall1.0721
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Coastal/Long Distance606.50.9892
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind609.10.9850
Predominantly Downwind559.61.0721
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore551.11.0887
Cape Doctor Coastal456.11.3155
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8369
Triple Number Coastal/Long Distance Medium1.0829
Triple Number Coastal/Long Distance High1.2120
Triple Number Windward/Leeward Low0.6493
Triple Number Windward/Leeward Medium0.8779
Triple Number Windward/Leeward High0.9957
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8369
Triple Number Coastal/Long Distance Medium1.0829
Triple Number Coastal/Long Distance High1.2120
Triple Number Windward/Leeward Low0.6493
Triple Number Windward/Leeward Medium0.8779
Triple Number Windward/Leeward High0.9957
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Predominantly Upwind609.10.9850
Predominantly Downwind559.61.0721
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance606.50.9892
Triple Number Coastal/Long Distance Low716.90.8369
Triple Number Coastal/Long Distance Medium554.11.0829
Triple Number Coastal/Long Distance High495.01.2120
Triple Number Windward/Leeward Low924.10.6493
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1523.81018.3772.6645.5574.5536.5504.6453.7427.2
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low716.90.8369
Triple Number AP Medium554.11.0828
Triple Number AP High495.11.2120
Triple Number Windward/Leeward Low965.40.6215
Triple Number Windward/Leeward Medium683.40.8779
Triple Number Windward/Leeward High602.60.9957
Single Number Predominant Upwind635.00.9448
Single Number Predominant Reaching552.11.0867
Single Number Predominant Downwind582.31.0303
Predominant Upwind - Low883.80.6789
Predominant Upwind - Low/Med669.70.8960
Predominant Upwind - Medium589.51.0178
Predominant Upwind - Med/High550.41.0901
Predominant Upwind - High531.11.1298
Predominant Downwind Low847.20.7082
Predominant Downwind Low/Med629.30.9535
Predominant Downwind Medium541.11.1088
Predominant Downwind Med/High485.01.2372
Predominant Downwind High440.81.3611
Predominant Reaching Low766.20.7831
Predominant Reaching Low/Med585.01.0256
Predominant Reaching Medium517.41.1597
Predominant Reaching Med/High475.61.2617
Predominant Reaching High443.71.3522
SA/DSPL Upwind21.10SA/DSPL Downwind44.44
Scoring OptionTODTOT
5-Band Windward/Leeward Low1079.70.5557
5-Band Windward/Leeward Low/Med790.30.7592
5-Band Windward/Leeward Medium672.30.8925
5-Band Windward/Leeward Med/High611.00.9820
5-Band Windward/Leeward High577.51.0390
Windward/Leeward 60-40 Low1093.80.5485
Windward/Leeward 60-40 Low/Med804.20.7461
Windward/Leeward 60-40 Medium687.90.8722
Windward/Leeward 60-40 Med/High630.20.9521
Windward/Leeward 60-40 High601.80.9971
5-Band AP Low788.00.7614
5-Band AP Low/Med625.90.9587
5-Band AP Medium546.51.0978
5-Band AP Med/High502.11.1951
5-Band AP High475.01.2633
5-Band SF Bay Tour - Low932.80.6433
5-Band SF Bay Tour - Low/Med757.10.7925
5-Band SF Bay Tour - Medium648.50.9252
5-Band SF Bay Tour - Med/High591.81.0139
5-Band SF Bay Tour - High560.21.0710
Chicago-Mac Upwind0.9156
Chicago-Mac All Purpose0.9563
Chicago-Mac Downwind0.9935
Bayview-Mac Cove Island0.6979
Bayview-Mac Shore0.7019
Harvest Moon Regatta481.01.2474
Double HandedClub Certificate2025
Jam SessionNED 6630
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-105Measurement30/08/2023HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.570Max. Beam3.344Draft1.752Displacement4,508Wetted area24.07IMS L9.657LSM09.713Acc. length10.570Sink (kg/mm) 18.05
VCGD-0.100VCGM-0.151RM Rated (kg·m) 114.4Limit 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 materialSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.650IG12.200ISP12.840MDT10.108MDL10.170MDT2MDL2TLTaperMWGO
E4.460J4.140BAS1.550FSDSFJSPLWPLTPS5.850BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.100Flotation Date30/08/2023
BALLAST
TANKS
IdDescriptionCapacityLCGVCGSp.WghtLevel
Sailing
2fresh water1206.241fuel1496.24
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG2fresh water12006.241fuel1491496.24Total deductible
Total deductible
Double HandedClub Certificate2025
Jam SessionNED 6630
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment0020.150.961.692.863.7233.5130/08/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment0010.050.530.991.983.024.0712.08NoNo 24.3530/08/2023
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment201615.1012.0513.587.728.1894%88.3721/01/2016