Double HandedClub Certificate2025
BoerderijtjeNED 7023
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 Angles43.2°43.2°41.2°39.8°38.5°38.0°37.8°38.3°39.6°
Beat VMG2.393.354.124.664.955.085.165.215.15
52°3.735.106.126.757.047.177.257.337.34
60°3.985.396.386.957.237.387.477.587.60
75°4.175.596.567.107.427.647.818.008.10
90°4.145.666.767.287.537.768.028.418.66
110°4.235.796.927.527.978.348.619.119.28
120°4.105.666.827.467.978.468.969.7810.62
135°3.615.096.317.127.668.188.7410.2412.95
150°2.994.285.446.417.117.588.049.0411.41
Run VMG2.593.714.715.556.186.637.027.839.88
Gybe Angles142.8°142.8°146.7°149.8°152.3°156.1°159.0°150.1°141.5°
APH ToD:555.2CDL: 8.999APH ToT: 1.0807CertNo:16403
BOAT
ClassJ-105DesignerJohnstoneBuilderTPIAge date03/2001Series date01/1992Offset filej105.offData fileNED7023
HULL
Length Overall10.570 mMaximum Beam3.344 mDraft2.022 mDisplacement4,196 kgDLR4.7857IMS DivisionPerformanceDynamic Allowance0.180%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.410m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.6334.32Headsail Luffed25.7325.73Headsail FlyingSymmetricAsymmetric91.1680.30 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail9.86Storm Jib7.72Heavy Weather Jib20.83
SAIL LIMITS
Headsails5
✱ One set on the forestay
✱ Woven polyester sails
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
BoerderijtjeNED 7023
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 VMG1505.21076.0873.3772.9727.4708.6698.1690.6699.5
52°964.5705.7587.9533.5511.7502.2496.4490.8490.6
60°903.8668.5564.2518.1498.2487.8481.9475.2473.8
75°863.3644.1548.9506.9485.3471.1461.0449.9444.5
90°869.2636.1532.9494.3478.2464.2449.0428.0415.7
110°851.2621.9520.1478.7451.6431.6418.2395.3388.0
120°877.7636.5528.0482.7451.9425.8402.0368.2339.1
135°996.2707.1570.7505.4469.9439.9412.1351.4278.1
150°1205.5841.0662.0561.2506.4474.7447.8398.4315.6
Run VMG1392.3971.1764.4648.1582.7543.3512.5459.9364.4
Selected Courses
Windward / Leeward1448.51023.6818.9710.5655.0625.9605.3575.3531.9
All purpose1097.8787.9642.7572.0536.1514.5498.1472.7445.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward686.20.8744
All purpose555.21.0807
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7572
Downwind "popa"0.9371
70% up, 30% down "Ilhabela"0.8034
30% up, 70% down "Ilhabela-inverso"0.8747
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Predominantly Upwind605.10.9917
Predominantly Downwind559.31.0728
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low715.30.8388
Triple Number AP Medium551.61.0878
Triple Number AP High492.61.2179
Triple Number Windward/Leeward Low963.10.6230
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Single Number Predominant Upwind631.00.9508
Single Number Predominant Reaching551.11.0887
Single Number Predominant Downwind582.61.0298
Predominant Upwind - Low878.60.6829
Predominant Upwind - Low/Med664.20.9034
Predominant Upwind - Medium585.61.0246
Predominant Upwind - Med/High547.61.0957
Predominant Upwind - High528.11.1361
Predominant Downwind Low853.70.7028
Predominant Downwind Low/Med630.50.9516
Predominant Downwind Medium540.51.1100
Predominant Downwind Med/High483.01.2423
Predominant Downwind High437.51.3714
Predominant Reaching Low768.70.7805
Predominant Reaching Low/Med584.21.0271
Predominant Reaching Medium515.81.1632
Predominant Reaching Med/High473.21.2678
Predominant Reaching High441.21.3600
SA/DSPL Upwind22.71SA/DSPL Downwind47.74
Scoring OptionTODTOT
5-Band Windward/Leeward Low1078.70.5562
5-Band Windward/Leeward Low/Med786.60.7628
5-Band Windward/Leeward Medium668.90.8970
5-Band Windward/Leeward Med/High607.90.9870
5-Band Windward/Leeward High573.01.0472
Windward/Leeward 60-40 Low1089.50.5507
Windward/Leeward 60-40 Low/Med798.50.7514
Windward/Leeward 60-40 Medium683.40.8780
Windward/Leeward 60-40 Med/High626.50.9576
Windward/Leeward 60-40 High597.11.0049
5-Band AP Low789.90.7596
5-Band AP Low/Med623.40.9625
5-Band AP Medium544.11.1027
5-Band AP Med/High499.71.2006
5-Band AP High472.31.2703
5-Band SF Bay Tour - Low929.70.6454
5-Band SF Bay Tour - Low/Med752.90.7970
5-Band SF Bay Tour - Medium644.70.9306
5-Band SF Bay Tour - Med/High588.41.0198
5-Band SF Bay Tour - High555.71.0797
Chicago-Mac Upwind0.9221
Chicago-Mac All Purpose0.9592
Chicago-Mac Downwind0.9923
Bayview-Mac Cove Island0.6981
Bayview-Mac Shore0.7023
Harvest Moon Regatta478.91.2528
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance603.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating603.90.9936
FinRating, kevyt tuuli1058.50.9447
FinRating, kova tuuli472.61.0581
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9936
Triple Number Coastal/Long Distance Low0.8388
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2179
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8825
Triple Number Windward/Leeward High1.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
For information
General Purpose Handicap (GPH)623.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low715.3
Triple Number Coastal/Long Distance Medium551.5
Triple Number Coastal/Long Distance High492.7
Triple Number Windward/Leeward Low921.2
Triple Number Windward/Leeward Medium679.9
Triple Number Windward/Leeward High599.2
Predominantly Upwind605.1
Predominantly Downwind559.3
Predominantly Reaching537.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8388
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2179
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8825
Triple Number Windward/Leeward High1.0013
Coastal/Long Distance0.9936
Predominantly Upwind0.9917
Predominantly Downwind1.0728
For information
General Purpose Handicap (GPH)623.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0807
Distanseseilas Trippeltall svak vind0.8388
Distanseseilas Trippeltall mellomvind1.0879
Distanseseilas Trippeltall sterk vind1.2179
Pølsebane Trippeltall svak vind0.6513
Pølsebane Trippeltall mellomvind0.8825
Pølsebane Trippeltall sterk vind1.0013
Motvind Singeltall0.9917
Medvind Singeltall1.0728
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Coastal/Long Distance603.90.9936
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind605.10.9917
Predominantly Downwind559.31.0728
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore544.91.1010
Cape Doctor Coastal453.61.3226
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8388
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2179
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8825
Triple Number Windward/Leeward High1.0013
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8388
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2179
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8825
Triple Number Windward/Leeward High1.0013
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Predominantly Upwind605.10.9917
Predominantly Downwind559.31.0728
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.90.9936
Triple Number Coastal/Long Distance Low715.30.8388
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High492.71.2179
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1531.01018.3769.5642.0571.9534.2502.2451.3424.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low715.30.8388
Triple Number AP Medium551.61.0878
Triple Number AP High492.61.2179
Triple Number Windward/Leeward Low963.10.6230
Triple Number Windward/Leeward Medium679.90.8825
Triple Number Windward/Leeward High599.21.0013
Single Number Predominant Upwind631.00.9508
Single Number Predominant Reaching551.11.0887
Single Number Predominant Downwind582.61.0298
Predominant Upwind - Low878.60.6829
Predominant Upwind - Low/Med664.20.9034
Predominant Upwind - Medium585.61.0246
Predominant Upwind - Med/High547.61.0957
Predominant Upwind - High528.11.1361
Predominant Downwind Low853.70.7028
Predominant Downwind Low/Med630.50.9516
Predominant Downwind Medium540.51.1100
Predominant Downwind Med/High483.01.2423
Predominant Downwind High437.51.3714
Predominant Reaching Low768.70.7805
Predominant Reaching Low/Med584.21.0271
Predominant Reaching Medium515.81.1632
Predominant Reaching Med/High473.21.2678
Predominant Reaching High441.21.3600
SA/DSPL Upwind22.71SA/DSPL Downwind47.74
Scoring OptionTODTOT
5-Band Windward/Leeward Low1078.70.5562
5-Band Windward/Leeward Low/Med786.60.7628
5-Band Windward/Leeward Medium668.90.8970
5-Band Windward/Leeward Med/High607.90.9870
5-Band Windward/Leeward High573.01.0472
Windward/Leeward 60-40 Low1089.50.5507
Windward/Leeward 60-40 Low/Med798.50.7514
Windward/Leeward 60-40 Medium683.40.8780
Windward/Leeward 60-40 Med/High626.50.9576
Windward/Leeward 60-40 High597.11.0049
5-Band AP Low789.90.7596
5-Band AP Low/Med623.40.9625
5-Band AP Medium544.11.1027
5-Band AP Med/High499.71.2006
5-Band AP High472.31.2703
5-Band SF Bay Tour - Low929.70.6454
5-Band SF Bay Tour - Low/Med752.90.7970
5-Band SF Bay Tour - Medium644.70.9306
5-Band SF Bay Tour - Med/High588.41.0198
5-Band SF Bay Tour - High555.71.0797
Chicago-Mac Upwind0.9221
Chicago-Mac All Purpose0.9592
Chicago-Mac Downwind0.9923
Bayview-Mac Cove Island0.6981
Bayview-Mac Shore0.7023
Harvest Moon Regatta478.91.2528
Double HandedClub Certificate2025
BoerderijtjeNED 7023
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-105Measurement12/08/2000HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.570Max. Beam3.344Draft2.022Displacement4,196Wetted area23.35IMS L9.568LSM09.570Acc. length10.570Sink (kg/mm) 17.55
VCGD-0.102VCGM-0.136RM Rated (kg·m) 106.8Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.410PBW0.110PIPA0.0045
PSD0.025PHD0.070PHL0.115
PSA17.0°ESL0.900
ST10.020ST20.090ST30.090
ST40.049ST50.190
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.650IG12.360ISP12.880MDT10.102MDL10.165MDT20.100MDL20.105TL1.850MW0.165GO0.185
E4.450J4.120BAS1.560FSD0.028SFJ0.000SPL0.000WPLTPS5.860BD0.127MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.100Flotation Date02/12/2008
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
BoerderijtjeNED 7023
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20250.170.911.682.893.7633.63
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20254.1612.15NoNo 25.73
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment202513.7613.768.177.07116%91.16