Club
Certificate
2023

Boat

J 24 ONE DESIGN

GER 907

ORC Bulgaria
Varna
Mosrka Gara 1
orcratingbulgaria@gmail.com
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.6°41.8°40.5°38.8°38.2°38.2°39.3°
Beat VMG2.963.563.984.264.404.444.40
52°4.535.315.755.996.146.216.25
60°4.775.515.896.126.306.406.49
75°4.915.616.006.266.506.696.89
90°4.825.616.096.426.656.807.22
110°4.775.656.146.546.917.267.91
120°4.625.536.056.446.827.218.25
135°4.135.065.776.186.556.927.84
150°3.504.465.275.856.226.567.28
Run VMG3.033.874.595.255.776.136.77
Gybe Angles147.5°152.0°155.0°167.6°177.2°179.0°179.0°

APH: 658.7

CDL: 6.436

GPH: 739.2

CertNo: 022/23

BOAT
ClassJ-24DesignerJOHN STONEBuilderJ-BOATSAge date01/1979Series date01/1977Offset filej24.OD.OFFData filej24907
HULL
Length Overall7.318 mMaximum Beam2.692 mDraft1.244 mDisplacement1,444 kgDLR5.7194IMS DivisionSportboatDynamic Allowance0.090%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight400 kgMinimum weight300 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail15.4415.77Headsail Luffed17.7917.79Headsail FlyingSymmetric34.5934.59Asymmetric
STORM SAIL AREAS (m²)
Trysail4.44Storm Jib3.41Heavy Weather Jib9.19
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
0898773055
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.
ORC Ref  03850002ML3Issued on 24/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

J 24 ONE DESIGN

GER 907

ORC Bulgaria
Varna
Mosrka Gara 1
orcratingbulgaria@gmail.com
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1214.41012.1905.2844.7818.8810.7817.3
52°794.8678.2626.2601.0586.2579.8576.5
60°755.0653.6611.0587.9571.5562.3555.0
75°733.9641.8600.5574.7554.3538.3522.7
90°747.4642.2591.1561.0541.0529.2498.8
110°755.1637.1586.4550.8521.2496.1455.1
120°779.5651.1594.9559.4528.1499.4436.6
135°870.9711.9623.9582.5549.7520.2459.3
150°1028.9806.5683.4615.3578.8548.4494.4
Run VMG1188.1930.1784.5685.6623.9587.6531.6
Selected Courses
Windward / Leeward1201.2971.1844.9765.1721.3699.1674.5
All purpose925.3766.2684.0635.7607.0588.3560.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward803.60.7466
All purpose658.70.9109
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6539
Downwind "popa"0.7878
70% up, 30% down "Ilhabela"0.6890
30% up, 70% down "Ilhabela-inverso"0.7422
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Predominantly Upwind711.30.8436
Predominantly Downwind670.70.8946
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low845.80.7094
Triple Number All Purpose Medium655.50.9153
Triple Number All Purpose High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Predominantly Upwind711.30.8436
Predominantly Downwind670.70.8946
Predominantly Upwind Low937.50.6400
Predominantly Upwind Medium732.70.8189
Predominantly Upwind High682.40.8792
Predominantly Downwind Low926.50.6476
Predominantly Downwind Medium664.20.9034
Predominantly Downwind High552.51.0860
Chicago-Mac Upwind0.8277
Chicago-Mac All Purpose0.8510
Chicago-Mac Downwind0.8793
Bayview-Mac Cove Island0.7924
Bayview-Mac Shore0.8000
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching628.80.9542
Predominantly Reaching Low769.50.7797
Predominantly Reaching Medium624.20.9613
Predominantly Reaching High548.31.0943
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1183.50.5070
5-Band Low / Medium992.90.6043
5-Band Medium782.80.7665
5-Band Medium / High704.20.8520
5-Band High678.70.8840
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance715.7
Triple Number Coastal/Long Distance Low845.8
Triple Number Coastal/Long Distance Medium655.5
Triple Number Coastal/Long Distance High582.6
Triple Number Windward/Leeward Low1086.2
Triple Number Windward/Leeward Medium798.0
Triple Number Windward/Leeward High695.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7094
Triple Number Coastal/Long Distance Medium0.9153
Triple Number Coastal/Long Distance High1.0298
Triple Number Windward/Leeward Low0.5524
Triple Number Windward/Leeward Medium0.7519
Triple Number Windward/Leeward High0.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low845.8
Triple Number Coastal/Long Distance Medium655.5
Triple Number Coastal/Long Distance High582.6
Triple Number Windward/Leeward Low1086.2
Triple Number Windward/Leeward Medium798.0
Triple Number Windward/Leeward High695.4
Predominantly Upwind711.3
Predominantly Downwind670.7
Predominantly Reaching644.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7094
Triple Number Coastal/Long Distance Medium0.9153
Triple Number Coastal/Long Distance High1.0298
Triple Number Windward/Leeward Low0.5524
Triple Number Windward/Leeward Medium0.7519
Triple Number Windward/Leeward High0.8628
Coastal/Long Distance0.8383
Predominantly Upwind0.8436
Predominantly Downwind0.8946
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7094
Tretall Distanseseilas Mellomvind0.9153
Tretall Distanseseilas Mye vind1.0298
Tretall Pølsebane Lite vind0.5524
Tretall Pølsebane Mellomvind0.7519
Tretall Pølsebane Mye vind0.8628
Distanseseilas ett tall (OSN 8-16kn)0.8383
Distanseseilas ett tall (APH 6-20kn)0.9109
Enkeltall Motvind0.8436
Enkeltall Medvind0.8946
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Coastal/Long Distance715.70.8383
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind711.30.8436
Predominantly Downwind670.70.8946
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore681.90.8800
Cape Doctor Coastal569.01.0545
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7094
Triple Number Coastal/Long Distance Medium0.9153
Triple Number Coastal/Long Distance High1.0298
Triple Number Windward/Leeward Low0.5524
Triple Number Windward/Leeward Medium0.7519
Triple Number Windward/Leeward High0.8628
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7094
Triple Number Coastal/Long Distance Medium0.9153
Triple Number Coastal/Long Distance High1.0298
Triple Number Windward/Leeward Low0.5524
Triple Number Windward/Leeward Medium0.7519
Triple Number Windward/Leeward High0.8628
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Predominantly Upwind711.30.8436
Predominantly Downwind670.70.8946
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance715.70.8383
Triple Number Coastal/Long Distance Low845.80.7094
Triple Number Coastal/Long Distance Medium655.50.9153
Triple Number Coastal/Long Distance High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1199.9914.6765.8676.7629.6594.9532.0
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low845.80.7094
Triple Number All Purpose Medium655.50.9153
Triple Number All Purpose High582.61.0298
Triple Number Windward/Leeward Low1086.20.5524
Triple Number Windward/Leeward Medium798.00.7519
Triple Number Windward/Leeward High695.40.8628
Predominantly Upwind711.30.8436
Predominantly Downwind670.70.8946
Predominantly Upwind Low937.50.6400
Predominantly Upwind Medium732.70.8189
Predominantly Upwind High682.40.8792
Predominantly Downwind Low926.50.6476
Predominantly Downwind Medium664.20.9034
Predominantly Downwind High552.51.0860
Chicago-Mac Upwind0.8277
Chicago-Mac All Purpose0.8510
Chicago-Mac Downwind0.8793
Bayview-Mac Cove Island0.7924
Bayview-Mac Shore0.8000
Harvest Moon Regatta572.21.0487
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy683.90.8774
San Francisco Bay Medium794.40.7553
Predominantly Reaching628.80.9542
Predominantly Reaching Low769.50.7797
Predominantly Reaching Medium624.20.9613
Predominantly Reaching High548.31.0943
Windward/Leeward 60-40 Low1091.60.5497
Windward/Leeward 60-40 Medium823.30.7288
Windward/Leeward 60-40 High736.20.8150
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1183.50.5070
5-Band Low / Medium992.90.6043
5-Band Medium782.80.7665
5-Band Medium / High704.20.8520
5-Band High678.70.8840
ORC Ref  03850002ML3Issued on 24/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

J 24 ONE DESIGN

GER 907

ORC Bulgaria
Varna
Mosrka Gara 1
orcratingbulgaria@gmail.com
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-24Measurement01/02/1977HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA7.318Max. Beam2.692Draft1.244Displacement1,444Wetted area11.01IMS L6.621LSM06.320Acc. length7.318Sink (kg/mm) 9.09
VCGD0.080VCGM0.088RM Rated (kg·m) 30.0Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P8.540IG8.190ISP8.210MDT10.090MDL10.130MDT20.090MDL20.130TLMW0.130GO0.150
E2.970J2.900BAS1.080FSDSFJSPL2.980WPLTPSBD0.085MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date02/02/2021MeasurerComment
SFFP0.286FFMFF0.810LCFcl4.184SG1.0188
SAFP7.317FAMFA0.660LCFsh4.394HBI0.719
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03850002ML3Issued on 24/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

J 24 ONE DESIGN

GER 907

ORC Bulgaria
Varna
Mosrka Gara 1
orcratingbulgaria@gmail.com
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.150.681.091.992.5615.4402/02/2021
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.090.561.072.123.214.258.32NoNo 17.7902/02/2021
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment18.108.108.105.184.9034.5902/02/2021
ORC Ref  03850002ML3Issued on 24/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org