Club 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 Angles43.7°43.7°41.6°39.8°37.8°36.7°36.3°36.0°36.4°
Beat VMG2.353.304.084.675.095.315.425.535.54
52°3.695.056.086.747.127.337.457.587.63
60°3.935.346.356.947.287.517.667.827.90
75°4.095.526.517.087.437.717.958.248.40
90°4.115.646.777.367.737.968.168.578.93
110°4.165.736.897.528.018.478.889.5310.17
120°4.045.586.757.427.948.458.9810.2311.53
135°3.565.026.227.047.578.088.619.9512.95
150°2.944.225.366.337.037.497.918.8010.80
Run VMG2.553.664.655.486.116.566.957.689.35
Gybe Angles142.9°142.9°147.0°149.6°152.0°156.3°160.3°158.8°138.6°
APH ToD:552.0CDL: 9.340APH ToT: 1.0869CertNo: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 weight659 kg(declared)Minimum weight529 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.
Club 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 VMG1532.51092.5882.8771.4707.7677.7663.9651.1649.7
52°976.7712.9592.0533.7505.6491.2483.4475.2471.9
60°915.3674.7567.3518.8494.4479.6470.1460.4455.7
75°879.3652.4552.7508.5484.7466.8453.1437.0428.7
90°875.0637.7531.8489.2466.0452.0441.4420.1403.2
110°864.5628.3522.5478.8449.2425.3405.6377.7354.1
120°891.6644.9533.2485.4453.6426.1401.0351.7312.3
135°1010.0717.7579.2511.0475.4445.6418.3361.8277.9
150°1223.3852.9671.2568.9512.1480.7455.3409.3333.5
Run VMG1412.8984.9775.0656.9589.6549.1518.1468.9385.1
Selected Courses
Windward / Leeward1472.41038.7828.9714.2648.7613.4591.0560.0517.4
All purpose1114.6798.0648.8573.6531.5506.1488.2460.7429.9
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward682.00.8797
All purpose552.01.0869
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7711
Downwind "popa"0.9246
70% up, 30% down "Ilhabela"0.8115
30% up, 70% down "Ilhabela-inverso"0.8725
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Predominantly Upwind599.21.0013
Predominantly Downwind561.61.0684
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low723.40.8294
Triple Number AP Medium549.01.0928
Triple Number AP High482.41.2438
Triple Number Windward/Leeward Low976.20.6146
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Single Number Predominant Upwind625.30.9596
Single Number Predominant Reaching549.11.0927
Single Number Predominant Downwind585.21.0253
Predominant Upwind - Low889.50.6746
Predominant Upwind - Low/Med666.50.9002
Predominant Upwind - Medium578.01.0381
Predominant Upwind - Med/High532.51.1267
Predominant Upwind - High510.31.1759
Predominant Downwind Low864.60.6939
Predominant Downwind Low/Med636.00.9434
Predominant Downwind Medium541.41.1082
Predominant Downwind Med/High481.91.2450
Predominant Downwind High437.31.3721
Predominant Reaching Low776.50.7727
Predominant Reaching Low/Med586.11.0237
Predominant Reaching Medium512.01.1719
Predominant Reaching Med/High467.31.2839
Predominant Reaching High434.91.3798
SA/DSPL Upwind22.71SA/DSPL Downwind47.74
Scoring OptionTODTOT
5-Band Windward/Leeward Low1094.70.5481
5-Band Windward/Leeward Low/Med792.70.7569
5-Band Windward/Leeward Medium663.90.9037
5-Band Windward/Leeward Med/High594.41.0095
5-Band Windward/Leeward High558.01.0753
Windward/Leeward 60-40 Low1105.80.5426
Windward/Leeward 60-40 Low/Med803.90.7464
Windward/Leeward 60-40 Medium676.00.8876
Windward/Leeward 60-40 Med/High609.00.9852
Windward/Leeward 60-40 High577.01.0399
5-Band AP Low799.70.7503
5-Band AP Low/Med627.00.9570
5-Band AP Medium540.41.1102
5-Band AP Med/High490.21.2239
5-Band AP High460.11.3040
5-Band SF Bay Tour - Low942.90.6363
5-Band SF Bay Tour - Low/Med758.30.7912
5-Band SF Bay Tour - Medium639.20.9386
5-Band SF Bay Tour - Med/High574.51.0444
5-Band SF Bay Tour - High539.51.1122
Chicago-Mac Upwind0.9267
Chicago-Mac All Purpose0.9595
Chicago-Mac Downwind0.9866
Bayview-Mac Cove Island0.6922
Bayview-Mac Shore0.6967
Harvest Moon Regatta476.81.2583
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance601.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating601.10.9982
FinRating, kevyt tuuli1073.90.9312
FinRating, kova tuuli459.51.0881
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9982
Triple Number Coastal/Long Distance Low0.8294
Triple Number Coastal/Long Distance Medium1.0929
Triple Number Coastal/Long Distance High1.2438
Triple Number Windward/Leeward Low0.6425
Triple Number Windward/Leeward Medium0.8867
Triple Number Windward/Leeward High1.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
For information
General Purpose Handicap (GPH)622.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low723.4
Triple Number Coastal/Long Distance Medium549.0
Triple Number Coastal/Long Distance High482.4
Triple Number Windward/Leeward Low933.9
Triple Number Windward/Leeward Medium676.7
Triple Number Windward/Leeward High585.0
Predominantly Upwind599.2
Predominantly Downwind561.6
Predominantly Reaching536.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8294
Triple Number Coastal/Long Distance Medium1.0929
Triple Number Coastal/Long Distance High1.2438
Triple Number Windward/Leeward Low0.6425
Triple Number Windward/Leeward Medium0.8867
Triple Number Windward/Leeward High1.0257
Coastal/Long Distance0.9982
Predominantly Upwind1.0013
Predominantly Downwind1.0684
For information
General Purpose Handicap (GPH)622.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0869
Distanseseilas Trippeltall svak vind0.8294
Distanseseilas Trippeltall mellomvind1.0929
Distanseseilas Trippeltall sterk vind1.2438
Pølsebane Trippeltall svak vind0.6425
Pølsebane Trippeltall mellomvind0.8867
Pølsebane Trippeltall sterk vind1.0257
Motvind Singeltall1.0013
Medvind Singeltall1.0684
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Coastal/Long Distance601.10.9982
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind599.21.0013
Predominantly Downwind561.61.0684
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore530.21.1317
Cape Doctor Coastal439.11.3664
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8294
Triple Number Coastal/Long Distance Medium1.0929
Triple Number Coastal/Long Distance High1.2438
Triple Number Windward/Leeward Low0.6425
Triple Number Windward/Leeward Medium0.8867
Triple Number Windward/Leeward High1.0257
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8294
Triple Number Coastal/Long Distance Medium1.0929
Triple Number Coastal/Long Distance High1.2438
Triple Number Windward/Leeward Low0.6425
Triple Number Windward/Leeward Medium0.8867
Triple Number Windward/Leeward High1.0257
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Predominantly Upwind599.21.0013
Predominantly Downwind561.61.0684
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance601.10.9982
Triple Number Coastal/Long Distance Low723.40.8294
Triple Number Coastal/Long Distance Medium549.01.0929
Triple Number Coastal/Long Distance High482.41.2438
Triple Number Windward/Leeward Low933.90.6425
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1557.71033.3778.3644.6566.4525.2493.3440.0409.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low723.40.8294
Triple Number AP Medium549.01.0928
Triple Number AP High482.41.2438
Triple Number Windward/Leeward Low976.20.6146
Triple Number Windward/Leeward Medium676.70.8867
Triple Number Windward/Leeward High585.01.0257
Single Number Predominant Upwind625.30.9596
Single Number Predominant Reaching549.11.0927
Single Number Predominant Downwind585.21.0253
Predominant Upwind - Low889.50.6746
Predominant Upwind - Low/Med666.50.9002
Predominant Upwind - Medium578.01.0381
Predominant Upwind - Med/High532.51.1267
Predominant Upwind - High510.31.1759
Predominant Downwind Low864.60.6939
Predominant Downwind Low/Med636.00.9434
Predominant Downwind Medium541.41.1082
Predominant Downwind Med/High481.91.2450
Predominant Downwind High437.31.3721
Predominant Reaching Low776.50.7727
Predominant Reaching Low/Med586.11.0237
Predominant Reaching Medium512.01.1719
Predominant Reaching Med/High467.31.2839
Predominant Reaching High434.91.3798
SA/DSPL Upwind22.71SA/DSPL Downwind47.74
Scoring OptionTODTOT
5-Band Windward/Leeward Low1094.70.5481
5-Band Windward/Leeward Low/Med792.70.7569
5-Band Windward/Leeward Medium663.90.9037
5-Band Windward/Leeward Med/High594.41.0095
5-Band Windward/Leeward High558.01.0753
Windward/Leeward 60-40 Low1105.80.5426
Windward/Leeward 60-40 Low/Med803.90.7464
Windward/Leeward 60-40 Medium676.00.8876
Windward/Leeward 60-40 Med/High609.00.9852
Windward/Leeward 60-40 High577.01.0399
5-Band AP Low799.70.7503
5-Band AP Low/Med627.00.9570
5-Band AP Medium540.41.1102
5-Band AP Med/High490.21.2239
5-Band AP High460.11.3040
5-Band SF Bay Tour - Low942.90.6363
5-Band SF Bay Tour - Low/Med758.30.7912
5-Band SF Bay Tour - Medium639.20.9386
5-Band SF Bay Tour - Med/High574.51.0444
5-Band SF Bay Tour - High539.51.1122
Chicago-Mac Upwind0.9267
Chicago-Mac All Purpose0.9595
Chicago-Mac Downwind0.9866
Bayview-Mac Cove Island0.6922
Bayview-Mac Shore0.6967
Harvest Moon Regatta476.81.2583
Club 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 L9.774LSM09.570Acc. length10.570Sink (kg/mm) 17.55
VCGD-0.102VCGM-0.136RM Rated (kg·m) 106.8Limit of positive stability(°) N/AStability IndexN/ADefault crew weight647Declared crew weight659
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
Club 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