International
One Design
 Certificate
2023

Boat

J 70

MNA-1234

Offshore Racing Congress
One Design
Certificate Sample
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.2°41.7°39.3°37.6°37.6°37.8°39.3°
Beat VMG3.103.784.264.524.574.594.53
52°4.725.616.076.356.476.546.57
60°4.965.806.236.576.766.866.95
75°5.125.916.386.817.207.437.69
90°5.406.226.636.917.357.908.60
110°5.476.357.047.628.078.519.38
120°5.326.246.967.788.579.2010.50
135°4.805.876.567.268.159.2412.33
150°4.085.165.946.507.077.8610.82
Run VMG3.534.475.145.636.126.819.37
Gybe Angles144.2°148.0°149.6°148.3°145.7°143.5°140.8°

APH: 598.2

CDL: 6.864

GPH: 671.6

CertNo: J-70

BOAT
ClassJ-70 ONE DESIGNDesignerJOHNSTONEBuilderJ BOATSAge date02/2013Series date02/2012Offset filej-70.od.offData filej70
HULL
Length Overall6.942 mMaximum Beam2.260 mDraft1.450 mDisplacement810 kgDLR3.3766IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.357%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight340 kgMinimum weight255 kg * when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail15.4616.12Headsail Luffed10.0010.00Headsail FlyingSymmetricAsymmetric45.6445.64 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail4.02Storm Jib3.39Heavy Weather Jib9.13
SAIL LIMITS
Headsails5 * Woven polyester sails  Spinnakers4
STABILITY
Righting Moment18.5 kg·mStability Index95.6
COMMENTS
weight acc to OD class rules incl outboard engine, 4 crew
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  02920002EL7Issued on 26/03/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
One Design
 Certificate
2023

Boat

J 70

MNA-1234

Offshore Racing Congress
One Design
Certificate Sample
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1162.3951.2844.8796.8787.0784.2795.5
52°763.0641.4593.1567.2556.3550.5548.3
60°725.3620.4577.5548.0532.5524.6518.3
75°703.6608.9564.0528.4500.3484.3468.3
90°666.4578.6542.6521.1489.9455.8418.5
110°658.0566.6511.1472.3446.3423.1383.7
120°676.1576.8516.9462.8420.0391.2342.9
135°749.3613.7549.0496.2441.8389.6291.9
150°882.3697.3606.0554.0509.4457.9332.7
Run VMG1018.8805.2699.8639.7588.2528.7384.2
Selected Courses
Windward / Leeward1090.5878.2772.3718.2687.6656.5589.9
All purpose840.8695.0624.0581.8552.9526.8480.6
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward744.90.8054
All purpose598.21.0030
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6861
Downwind "popa"0.9004
70% up, 30% down "Ilhabela"0.7388
30% up, 70% down "Ilhabela-inverso"0.8233
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Predominantly Upwind659.60.9097
Predominantly Downwind596.71.0055
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low768.00.7813
Triple Number All Purpose Medium598.11.0032
Triple Number All Purpose High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Predominantly Upwind659.60.9097
Predominantly Downwind596.71.0055
Predominantly Upwind Low870.40.6893
Predominantly Upwind Medium688.10.8720
Predominantly Upwind High644.20.9314
Predominantly Downwind Low817.00.7344
Predominantly Downwind Medium595.11.0082
Predominantly Downwind High455.01.3186
Chicago-Mac Upwind0.8932
Chicago-Mac All Purpose0.9373
Chicago-Mac Downwind0.9883
Bayview-Mac Cove Island0.8705
Bayview-Mac Shore0.8741
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching564.21.0634
Predominantly Reaching Low689.70.8699
Predominantly Reaching Medium562.81.0661
Predominantly Reaching High466.21.2869
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1074.20.5586
5-Band Low / Medium902.70.6647
5-Band Medium730.30.8216
5-Band Medium / High655.70.9151
5-Band High601.40.9977
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance649.9
Triple Number Coastal/Long Distance Low768.0
Triple Number Coastal/Long Distance Medium598.1
Triple Number Coastal/Long Distance High516.0
Triple Number Windward/Leeward Low984.4
Triple Number Windward/Leeward Medium741.9
Triple Number Windward/Leeward High639.2
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7813
Triple Number Coastal/Long Distance Medium1.0032
Triple Number Coastal/Long Distance High1.1628
Triple Number Windward/Leeward Low0.6095
Triple Number Windward/Leeward Medium0.8087
Triple Number Windward/Leeward High0.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low768.0
Triple Number Coastal/Long Distance Medium598.1
Triple Number Coastal/Long Distance High516.0
Triple Number Windward/Leeward Low984.4
Triple Number Windward/Leeward Medium741.9
Triple Number Windward/Leeward High639.2
Predominantly Upwind659.6
Predominantly Downwind596.7
Predominantly Reaching574.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7813
Triple Number Coastal/Long Distance Medium1.0032
Triple Number Coastal/Long Distance High1.1628
Triple Number Windward/Leeward Low0.6095
Triple Number Windward/Leeward Medium0.8087
Triple Number Windward/Leeward High0.9386
Coastal/Long Distance0.9232
Predominantly Upwind0.9097
Predominantly Downwind1.0055
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7813
Tretall Distanseseilas Mellomvind1.0032
Tretall Distanseseilas Mye vind1.1628
Tretall Pølsebane Lite vind0.6095
Tretall Pølsebane Mellomvind0.8087
Tretall Pølsebane Mye vind0.9386
Distanseseilas ett tall (OSN 8-16kn)0.9232
Distanseseilas ett tall (APH 6-20kn)1.0030
Enkeltall Motvind0.9097
Enkeltall Medvind1.0055
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Coastal/Long Distance649.90.9232
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind659.60.9097
Predominantly Downwind596.71.0055
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore609.80.9839
Cape Doctor Coastal494.51.2134
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7813
Triple Number Coastal/Long Distance Medium1.0032
Triple Number Coastal/Long Distance High1.1628
Triple Number Windward/Leeward Low0.6095
Triple Number Windward/Leeward Medium0.8087
Triple Number Windward/Leeward High0.9386
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7813
Triple Number Coastal/Long Distance Medium1.0032
Triple Number Coastal/Long Distance High1.1628
Triple Number Windward/Leeward Low0.6095
Triple Number Windward/Leeward Medium0.8087
Triple Number Windward/Leeward High0.9386
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Predominantly Upwind659.60.9097
Predominantly Downwind596.71.0055
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low768.00.7813
Triple Number Coastal/Long Distance Medium598.11.0032
Triple Number Coastal/Long Distance High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.3826.2698.9621.8574.6529.9450.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low768.00.7813
Triple Number All Purpose Medium598.11.0032
Triple Number All Purpose High516.01.1628
Triple Number Windward/Leeward Low984.40.6095
Triple Number Windward/Leeward Medium741.90.8087
Triple Number Windward/Leeward High639.20.9386
Predominantly Upwind659.60.9097
Predominantly Downwind596.71.0055
Predominantly Upwind Low870.40.6893
Predominantly Upwind Medium688.10.8720
Predominantly Upwind High644.20.9314
Predominantly Downwind Low817.00.7344
Predominantly Downwind Medium595.11.0082
Predominantly Downwind High455.01.3186
Chicago-Mac Upwind0.8932
Chicago-Mac All Purpose0.9373
Chicago-Mac Downwind0.9883
Bayview-Mac Cove Island0.8705
Bayview-Mac Shore0.8741
Harvest Moon Regatta497.21.2068
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy620.20.9674
San Francisco Bay Medium726.40.8260
Predominantly Reaching564.21.0634
Predominantly Reaching Low689.70.8699
Predominantly Reaching Medium562.81.0661
Predominantly Reaching High466.21.2869
Windward/Leeward 60-40 Low998.80.6007
Windward/Leeward 60-40 Medium769.60.7796
Windward/Leeward 60-40 High690.30.8692
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1074.20.5586
5-Band Low / Medium902.70.6647
5-Band Medium730.30.8216
5-Band Medium / High655.70.9151
5-Band High601.40.9977
ORC Ref  02920002EL7Issued on 26/03/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
One Design
 Certificate
2023

Boat

J 70

MNA-1234

Offshore Racing Congress
One Design
Certificate Sample
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-70 ONE DESIGNMeasurement01/02/2013HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA6.942Max. Beam2.260Draft1.450Displacement810Wetted area9.15IMS L6.705LSM06.214Acc. length6.942Sink (kg/mm) 7.48
VCGD-0.038VCGM-0.041RM Rated (kg·m) 18.5Limit of positive stability(°) 104.3Stability Index95.6
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P7.975IG8.153ISP9.412MDT10.076MDL10.131MDT20.070MDL20.070TL1.000MW0.116GO0.136
E2.876J2.340BAS1.145FSD0.000SFJ0.175SPLWPLTPS4.025BD0.095MWT24.00MCG3.880
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date01/02/2016MeasurerClass rules weightComment
SFFP0.147FFM0.792FF0.793LCFcl3.696SG1.0190
SAFP6.895FAM0.577FA0.578LCFsh3.858HBI0.678
W118.0W218.0W318.0W418.0
PD1601.1PD2600.9PD3602.2PD4603.0
WD7.870PLM9000.00GSA1.0RSA1.0RM18.5
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCGEEngine OUTBOARD MIN.10kgTotal deductible
ORC Ref  02920002EL7Issued on 26/03/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
One Design
 Certificate
2023

Boat

J 70

MNA-1234

Offshore Racing Congress
One Design
Certificate Sample
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.370.881.432.142.5715.46CLASS
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC0.060.350.651.251.862.458.00YesNo 10.00CLASS
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentORC10.808.809.805.565.7098%45.64CLASS
ORC Ref  02920002EL7Issued on 26/03/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org