International
Certificate
2023

Boat

DJ70

USA 370

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
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°37.2°37.2°38.6°
Beat VMG3.103.794.274.564.644.664.61
52°4.725.626.096.396.556.636.67
60°4.975.816.256.606.846.967.06
75°5.125.916.396.847.267.557.85
90°5.406.246.706.997.387.978.81
110°5.476.367.087.728.208.679.60
120°5.336.246.977.828.689.3810.78
135°4.815.876.567.268.159.2512.55
150°4.085.165.946.507.077.8710.87
Run VMG3.544.475.155.636.126.819.42
Gybe Angles144.2°148.0°149.6°148.3°145.7°143.5°140.3°

APH: 594.8

CDL: 6.929

GPH: 668.7

CertNo: USA370

BOAT
ClassJ 70 ODDesignerJOHNSTONEBuilderJ BOATSAge date02/2013Series date02/2012Offset fileJ-70.OD.OFFData fileUSA 370
HULL
Length Overall6.942 mMaximum Beam2.260 mDraft1.449 mDisplacement808 kgDLR3.3739IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.357%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight340 kgMinimum weight255 kg * when appliedNon Manual PowerNoCrew Arm Extension0.50 m
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 Index95.7
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  03330002J10Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
2023

Boat

DJ70

USA 370

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1162.0950.7843.6789.5776.2772.2781.0
52°762.8641.1591.5563.4549.7543.0539.4
60°725.0620.2575.9545.1526.0517.3509.6
75°703.3608.7563.3526.4496.1476.6458.5
90°666.3576.6537.0515.1488.0451.9408.8
110°657.8566.1508.8466.1439.1415.4374.9
120°675.8576.6516.5460.4414.7383.7334.0
135°749.0613.6548.8496.0441.5389.2286.9
150°882.0697.1605.9553.7509.1457.5331.1
Run VMG1018.4804.9699.6639.4587.8528.3382.4
Selected Courses
Windward / Leeward1090.2877.8771.6714.4682.0650.2581.7
All purpose840.6694.5622.6578.3548.1521.0472.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward741.40.8092
All purpose594.81.0087
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6914
Downwind "popa"0.9011
70% up, 30% down "Ilhabela"0.7433
30% up, 70% down "Ilhabela-inverso"0.8260
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Predominantly Upwind655.60.9152
Predominantly Downwind595.11.0082
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low767.60.7817
Triple Number All Purpose Medium595.21.0081
Triple Number All Purpose High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Predominantly Upwind655.60.9152
Predominantly Downwind595.11.0082
Predominantly Upwind Low870.00.6896
Predominantly Upwind Medium683.70.8775
Predominantly Upwind High634.70.9453
Predominantly Downwind Low816.60.7348
Predominantly Downwind Medium594.11.0100
Predominantly Downwind High452.51.3260
Chicago-Mac Upwind0.8981
Chicago-Mac All Purpose0.9414
Chicago-Mac Downwind0.9912
Bayview-Mac Cove Island0.8730
Bayview-Mac Shore0.8771
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching561.31.0689
Predominantly Reaching Low689.10.8707
Predominantly Reaching Medium560.51.0705
Predominantly Reaching High461.71.2994
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1073.80.5588
5-Band Low / Medium901.90.6652
5-Band Medium726.80.8255
5-Band Medium / High649.40.9239
5-Band High593.51.0109
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance646.5
Triple Number Coastal/Long Distance Low767.6
Triple Number Coastal/Long Distance Medium595.2
Triple Number Coastal/Long Distance High509.6
Triple Number Windward/Leeward Low983.9
Triple Number Windward/Leeward Medium739.0
Triple Number Windward/Leeward High632.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7817
Triple Number Coastal/Long Distance Medium1.0081
Triple Number Coastal/Long Distance High1.1775
Triple Number Windward/Leeward Low0.6098
Triple Number Windward/Leeward Medium0.8119
Triple Number Windward/Leeward High0.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low767.6
Triple Number Coastal/Long Distance Medium595.2
Triple Number Coastal/Long Distance High509.6
Triple Number Windward/Leeward Low983.9
Triple Number Windward/Leeward Medium739.0
Triple Number Windward/Leeward High632.4
Predominantly Upwind655.6
Predominantly Downwind595.1
Predominantly Reaching571.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7817
Triple Number Coastal/Long Distance Medium1.0081
Triple Number Coastal/Long Distance High1.1775
Triple Number Windward/Leeward Low0.6098
Triple Number Windward/Leeward Medium0.8119
Triple Number Windward/Leeward High0.9487
Coastal/Long Distance0.9281
Predominantly Upwind0.9152
Predominantly Downwind1.0082
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7817
Tretall Distanseseilas Mellomvind1.0081
Tretall Distanseseilas Mye vind1.1775
Tretall Pølsebane Lite vind0.6098
Tretall Pølsebane Mellomvind0.8119
Tretall Pølsebane Mye vind0.9487
Distanseseilas ett tall (OSN 8-16kn)0.9281
Distanseseilas ett tall (APH 6-20kn)1.0087
Enkeltall Motvind0.9152
Enkeltall Medvind1.0082
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Coastal/Long Distance646.50.9281
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind655.60.9152
Predominantly Downwind595.11.0082
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore602.20.9963
Cape Doctor Coastal487.01.2321
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7817
Triple Number Coastal/Long Distance Medium1.0081
Triple Number Coastal/Long Distance High1.1775
Triple Number Windward/Leeward Low0.6098
Triple Number Windward/Leeward Medium0.8119
Triple Number Windward/Leeward High0.9487
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7817
Triple Number Coastal/Long Distance Medium1.0081
Triple Number Coastal/Long Distance High1.1775
Triple Number Windward/Leeward Low0.6098
Triple Number Windward/Leeward Medium0.8119
Triple Number Windward/Leeward High0.9487
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Predominantly Upwind655.60.9152
Predominantly Downwind595.11.0082
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.50.9281
Triple Number Coastal/Long Distance Low767.60.7817
Triple Number Coastal/Long Distance Medium595.21.0081
Triple Number Coastal/Long Distance High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1083.0825.7697.7618.2569.5523.9442.1
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low767.60.7817
Triple Number All Purpose Medium595.21.0081
Triple Number All Purpose High509.61.1775
Triple Number Windward/Leeward Low983.90.6098
Triple Number Windward/Leeward Medium739.00.8119
Triple Number Windward/Leeward High632.40.9487
Predominantly Upwind655.60.9152
Predominantly Downwind595.11.0082
Predominantly Upwind Low870.00.6896
Predominantly Upwind Medium683.70.8775
Predominantly Upwind High634.70.9453
Predominantly Downwind Low816.60.7348
Predominantly Downwind Medium594.11.0100
Predominantly Downwind High452.51.3260
Chicago-Mac Upwind0.8981
Chicago-Mac All Purpose0.9414
Chicago-Mac Downwind0.9912
Bayview-Mac Cove Island0.8730
Bayview-Mac Shore0.8771
Harvest Moon Regatta493.31.2162
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy613.20.9784
San Francisco Bay Medium723.60.8292
Predominantly Reaching561.31.0689
Predominantly Reaching Low689.10.8707
Predominantly Reaching Medium560.51.0705
Predominantly Reaching High461.71.2994
Windward/Leeward 60-40 Low998.40.6009
Windward/Leeward 60-40 Medium765.80.7835
Windward/Leeward 60-40 High681.40.8805
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1073.80.5588
5-Band Low / Medium901.90.6652
5-Band Medium726.80.8255
5-Band Medium / High649.40.9239
5-Band High593.51.0109
ORC Ref  03330002J10Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
2023

Boat

DJ70

USA 370

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 70 ODMeasurement01/02/2013HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA6.942Max. Beam2.260Draft1.449Displacement808Wetted area9.14IMS L6.703LSM06.210Acc. length6.942Sink (kg/mm) 7.47
VCGD-0.040VCGM-0.043RM Rated (kg·m) 18.5Limit of positive stability(°) 104.4Stability Index95.7
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
SFFP0.147FFM0.793FF0.793LCFcl3.695SG
SAFP6.895FAM0.578FA0.578LCFsh3.857HBI0.678
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  03330002J10Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
2023

Boat

DJ70

USA 370

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
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  03330002J10Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org