International Certificate2026
MAYKTUR 1731
Turkiye
Sailing
Federation
www.tyf.org.tr/
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 Angles45.8°43.7°42.0°40.1°38.0°37.3°37.4°38.3°40.2°
Beat VMG2.093.023.704.184.504.614.654.624.52
52°3.284.615.526.026.326.496.586.656.62
60°3.524.875.736.196.536.776.897.027.02
75°3.695.035.856.336.767.157.437.747.88
90°3.865.396.246.717.017.287.798.599.01
110°3.955.506.397.117.778.268.749.6510.55
120°3.845.376.277.007.838.719.4110.6912.14
135°3.404.845.886.567.248.119.2012.4114.47
150°2.824.095.165.956.547.117.8510.6714.28
Run VMG2.443.544.475.175.686.166.809.2412.36
Gybe Angles140.3°143.8°148.0°151.6°151.9°149.2°145.1°139.5°144.9°
APH ToD:598.3CDL: 6.862APH ToT: 1.0029CertNo:
BOAT
ClassJ-70 ONE DESIGNDesignerJOHNSTONEBuilderJ BOATSAge date04/2023Series date02/2012Offset filej-70.od.offData fileTUR1731 MAYK
HULL
Length Overall6.942 mMaximum Beam2.260 mDraft1.450 mDisplacement812 kgDLR3.3788IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.455%RS Assessment-0.127%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight365 kg(declared)Minimum weight235 kg ✱ when appliedCrew 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 Maximum (m²)
Trysail4.02Storm Jib3.39Heavy Weather Jib9.13
SAIL LIMITS
Headsails5
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers4
STABILITY
Righting Moment 18.5 kg·m Stability Index 93.5
COMMENTS
OUTBOARD ENGINE (electric)
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  04590004J4O Issued on 26/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
MAYKTUR 1731
Turkiye
Sailing
Federation
www.tyf.org.tr/
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 VMG1718.81193.3973.7860.3799.2780.8774.7779.5797.1
52°1098.3780.8652.0598.0569.2554.4547.3541.6543.8
60°1023.5740.0628.3581.9551.4531.5522.7513.1512.6
75°975.5715.4614.9569.0532.8503.3484.3465.2457.1
90°932.5667.6576.6536.4513.6494.7462.1419.0399.6
110°911.1654.4563.8506.4463.3435.7412.1373.0341.1
120°938.3670.6573.9514.5460.0413.4382.4336.8296.5
135°1059.2744.1612.5549.1497.2444.0391.2290.2248.9
150°1276.1879.5697.5604.6550.2506.4458.3337.4252.2
Run VMG1473.61015.5805.4696.7634.3584.8529.2389.6291.2
Selected Courses
Windward / Leeward1596.21104.4889.5778.5716.7682.8652.0584.6544.1
All purpose1208.4849.1700.9626.7580.5550.3523.8476.1449.1
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward745.90.8044
All purpose598.31.0029
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6816
Downwind "popa"0.9022
70% up, 30% down "Ilhabela"0.7356
30% up, 70% down "Ilhabela-inverso"0.8223
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Predominantly Upwind662.00.9064
Predominantly Downwind596.81.0053
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP619.30.9688 Predom. Rc High436.91.3732 5B SF Bay L/M818.60.7330 TriNum AP Low775.00.7742 Predom. Dn Low912.70.6574 5B SF Bay Med702.50.8541 TriNum AP Med598.51.0026 Predom. Dn L/M679.30.8832 5B SF Bay M/H628.40.9548 TriNum AP High512.51.1707 Predom. Dn Med580.81.0330 5B SF Bay High575.01.0435 TriNum W/L Low1045.80.5737 Predom. Dn M/H493.41.2162 5B AP Low855.70.7012 TriNum W/L Med743.20.8073 Predom. Dn High414.91.4463 5B AP L/M678.80.8839 TriNum W/L Hig634.40.9458 ChiMac Up Low846.00.7092 5B AP Med588.51.0196 Predom. Upwind690.20.8693 ChiMac Up Med759.00.7905 5B AP M/H525.01.1429 Predom. Reaching588.31.0199 ChiMac Up High656.20.9144 5B AP High479.61.2509 Predom. Downwind617.20.9721 ChiMac Off Low788.10.7613 5B W/L Low1173.70.5112 Predom. Up Low967.60.6201 ChiMac Off Med693.40.8653 5B W/L L/M856.50.7005 Predom. Up L/M730.40.8215 ChiMac Off High572.41.0482 5B W/L Med730.40.8215 Predom. Up Med641.50.9353 ChiMac AP Low812.90.7381 5B W/L M/H651.20.9214 Predom. Up M/H590.71.0158 ChiMac AP Med723.30.8295 5B W/L High589.21.0183 Predom. Up High563.01.0657 ChiMac AP High612.50.9795 W/L 60-40 Low1192.90.5030 Predom. Rc Low828.20.7244 BayMac Cove Island935.80.6412 W/L 60-40 L/M873.30.6871 Predom. Rc L/M633.40.9473 BayMac Shore929.40.6456 W/L 60-40 Med748.10.8020 Predom. Rc Med555.81.0796 Harvest Moon502.41.1943 W/L 60-40 M/H676.70.8867 Predom. Rc M/H489.51.2258 5B SF Bay Low992.90.6043 W/L 60-40 High627.70.9558      SA/DSPL Up29.28SA/DSPL Dn70.25
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance650.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating650.90.9219
FinRating, kevyt tuuli1152.70.8675
FinRating, kova tuuli479.11.0435
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9219
Triple Number Coastal/Long Distance Low0.7742
Triple Number Coastal/Long Distance Medium1.0027
Triple Number Coastal/Long Distance High1.1707
Triple Number Windward/Leeward Low0.6018
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
For information
General Purpose Handicap (GPH)673.2
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Saronikos S All Purpose683.40.8780
Saronikos S Upwind803.30.7469
Saronikos S Downwind533.11.1255
Saronikos N All Purpose728.40.8237
Saronikos N Upwind841.50.7130
Saronikos N Downwind608.00.9868
Saronikos SW All Purpose685.60.8751
Saronikos SW Upwind826.60.7259
Saronikos SW Downwind543.11.1048
Saronikos NE All Purpose749.10.8010
Saronikos NE Upwind785.00.7643
Saronikos NE Downwind678.80.8840
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose619.30.9688
5-Band All Purpose Low935.30.6415
5-Band All Purpose L/M702.40.8543
5-Band All Purpose Med610.10.9835
5-Band All Purpose M/H541.71.1076
5-Band All Purpose High489.01.2270
Single Number Predominant Upwind660.60.9082
Single Number Predominant Reaching569.11.0542
Single Number Predominant Downwind598.11.0032
5-Band 50-50 Windward/Leeward Low1173.70.5112
5-Band 50-50 Windward/Leeward L/M856.50.7005
5-Band 50-50 Windward/Leeward Med730.40.8215
5-Band 50-50 Windward/Leeward M/H651.20.9214
5-Band 50-50 Windward/Leeward High589.21.0183
5-Band 60-40 Windward/Leeward Low1192.90.5030
5-Band 60-40 Windward/Leeward L/M873.30.6871
5-Band 60-40 Windward/Leeward Med748.10.8020
5-Band 60-40 Windward/Leeward M/H676.70.8867
5-Band 60-40 Windward/Leeward High627.70.9558
Triple Number 50-50 Windward/Leeward Low1045.80.5737
Triple Number 50-50 Windward/Leeward Med743.30.8072
Triple Number 50-50 Windward/Leeward High634.40.9458
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward765.00.7843
Triple Number 60-40 Windward/Leeward Low1063.80.5640
Triple Number 60-40 Windward/Leeward Med760.60.7889
Triple Number 60-40 Windward/Leeward High663.10.9048
Triple Number All-Purpose Low840.00.7143
Triple Number All-Purpose Med620.30.9673
Triple Number All-Purpose High527.31.1380
Triple Number Predominant Upwind Low876.00.6850
Triple Number Predominant Upwind Med653.60.9180
Triple Number Predominant Upwind High593.11.0117
Triple Number Predominant Reaching Low753.90.7958
Triple Number Predominant Reaching Med576.11.0415
Triple Number Predominant Reaching High464.51.2917
Triple Number Predominant Downwind Low818.30.7333
Triple Number Predominant Downwind Med592.11.0133
Triple Number Predominant Downwind High457.51.3114
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low775.0
Triple Number Coastal/Long Distance Medium598.4
Triple Number Coastal/Long Distance High512.5
Triple Number Windward/Leeward Low997.0
Triple Number Windward/Leeward Medium743.2
Triple Number Windward/Leeward High634.4
Predominantly Upwind662.0
Predominantly Downwind596.8
Predominantly Reaching574.5
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7742
Triple Number Coastal/Long Distance Medium1.0027
Triple Number Coastal/Long Distance High1.1707
Triple Number Windward/Leeward Low0.6018
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9458
Coastal/Long Distance0.9219
Predominantly Upwind0.9064
Predominantly Downwind1.0053
For information
General Purpose Handicap (GPH)673.2
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0029
Distanseseilas Trippeltall svak vind0.7742
Distanseseilas Trippeltall mellomvind1.0027
Distanseseilas Trippeltall sterk vind1.1707
Pølsebane Trippeltall svak vind0.6018
Pølsebane Trippeltall mellomvind0.8073
Pølsebane Trippeltall sterk vind0.9458
Motvind Singeltall0.9064
Medvind Singeltall1.0053
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Coastal/Long Distance650.90.9219
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind662.00.9064
Predominantly Downwind596.81.0053
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore556.31.0786
Cape Doctor Coastal457.21.3124
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7742
Triple Number Coastal/Long Distance Medium1.0027
Triple Number Coastal/Long Distance High1.1707
Triple Number Windward/Leeward Low0.6018
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9458
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7742
Triple Number Coastal/Long Distance Medium1.0027
Triple Number Coastal/Long Distance High1.1707
Triple Number Windward/Leeward Low0.6018
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9458
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Predominantly Upwind662.00.9064
Predominantly Downwind596.81.0053
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance650.90.9219
Triple Number Coastal/Long Distance Low775.00.7742
Triple Number Coastal/Long Distance Medium598.41.0027
Triple Number Coastal/Long Distance High512.51.1707
Triple Number Windward/Leeward Low997.00.6018
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High634.40.9458
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1583.91095.5835.4703.0620.5571.5527.0446.9416.2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP619.30.9688 Predom. Dn High414.91.4463 5B AP M/H525.01.1429 TriNum AP Low775.00.7742 Predom. Rc Low828.20.7244 5B AP High479.61.2509 TriNum AP Med598.51.0026 Predom. Rc L/M633.40.9473 5B SF Bay Low992.90.6043 TriNum AP High512.51.1707 Predom. Rc Med555.81.0796 5B SF Bay L/M818.60.7330 TriNum W/L Low1045.80.5737 Predom. Rc M/H489.51.2258 5B SF Bay Med702.50.8541 TriNum W/L Med743.20.8073 Predom. Rc High436.91.3732 5B SF Bay M/H628.40.9548 TriNum W/L Hig634.40.9458 5B W/L Low1173.70.5112 5B SF Bay High575.01.0435 Predom. Upwind690.20.8693 5B W/L L/M856.50.7005 ChiMac Up Low846.00.7092 Predom. Reaching588.31.0199 5B W/L Med730.40.8215 ChiMac Up Med759.00.7905 Predom. Downwind617.20.9721 5B W/L M/H651.20.9214 ChiMac Up High656.20.9144 Predom. Up Low967.60.6201 5B W/L High589.21.0183 ChiMac Off Low788.10.7613 Predom. Up L/M730.40.8215 W/L 60-40 Low1192.90.5030 ChiMac Off Med693.40.8653 Predom. Up Med641.50.9353 W/L 60-40 L/M873.30.6871 ChiMac Off High572.41.0482 Predom. Up M/H590.71.0158 W/L 60-40 Med748.10.8020 ChiMac AP Low812.90.7381 Predom. Up High563.01.0657 W/L 60-40 M/H676.70.8867 ChiMac AP Med723.30.8295 Predom. Dn Low912.70.6574 W/L 60-40 High627.70.9558 ChiMac AP High612.50.9795 Predom. Dn L/M679.30.8832 5B AP Low855.70.7012 BayMac Cove Island935.80.6412 Predom. Dn Med580.81.0330 5B AP L/M678.80.8839 BayMac Shore929.40.6456 Predom. Dn M/H493.41.2162 5B AP Med588.51.0196 Harvest Moon502.41.1943      SA/DSPL Up29.28SA/DSPL Dn70.25
ORC Ref  04590004J4O Issued on 26/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
MAYKTUR 1731
Turkiye
Sailing
Federation
www.tyf.org.tr/
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-70 ONE DESIGNMeasurement20/06/2023HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall6.942Maximum beam2.260Draft1.450Displacement812Wetted area9.16IMS L6.741LSM06.217Accomod. length6.942Sink (kg/mm) 7.48
VCGD-0.035VCGM-0.039 RM Rated (kg·m) 18.5Limit of positive stability(°) 102.2 Stability Index 93.5 BLR index 0.0000Default crew weight349 Declared crew weight 365
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialCarbonSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P7.975IG8.153ISP9.412MDT10.076MDL10.131MDT20.070MDL20.070TL1.000MW0.116GO0.136
E2.876J2.340BAS1.145FSD0.000SFJ0.175SPL0.000WPLTPS4.025BD0.095MWT24.00MCG3.880
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date01/02/2016MeasurerOD
SFFP0.147FFM0.792FF0.793LCFcl3.696SG1.0210
SAFP6.895FAM0.577FA0.577LCFsh3.858HBI0.677
W118.0W218.0W318.0W418.0
PD1601.1PD2600.9PD3602.2PD4603.0
WD7.870PLM9000.00GSA1.0RSA1.0RM18.5
INVENTORY
Fixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCGEEngine (IC)OUTBOARDTotal deductible
ORC Ref  04590004J4O Issued on 26/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
MAYKTUR 1731
Turkiye
Sailing
Federation
www.tyf.org.tr/
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
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04590004J4O Issued on 26/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org