Club Certificate2026
ANEMOSGRE-692
Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
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 Angles46.7°44.1°41.9°40.8°40.0°39.3°39.1°39.2°40.6°
Beat VMG2.012.863.453.874.174.344.424.444.33
52°3.164.385.165.685.996.166.256.296.27
60°3.414.615.395.876.156.316.416.486.48
75°3.574.765.556.026.296.476.606.786.85
90°3.464.675.526.106.406.566.696.987.21
110°3.364.695.646.216.536.787.027.397.58
120°3.234.545.506.146.506.777.057.577.87
135°2.864.135.105.866.326.636.917.518.00
150°2.413.584.565.375.986.376.657.217.75
Run VMG2.093.103.964.685.325.836.216.747.26
Gybe Angles144.7°148.3°152.1°155.6°161.2°167.1°176.3°178.1°177.7°
APH ToD:661.2CDL: 6.750APH ToT: 0.9074CertNo:02166
BOAT
ClassDUFOUR 31DesignerMICHEL DUFOURBuilderDUFOURAge dateSeries date01/1973Offset fileH143.bofData fileGR692
HULL
Length Overall9.353Maximum Beam3.166Draft1.788Displacement4,691DLR11.9626IMS DivisionCruiser/RacerDynamic Allowance0.710%Age Allowance0.650%RS Assessment0.000%
PROPELLER
InstallationShaft non exposedTypeFeathering 2 bladesDiameter0.381m
CREW
Maximum weight400(declared)Minimum weight270 ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail17.9118.13Headsail Luffed30.7430.74Headsail FlyingSymmetric60.7660.76Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail5.45Storm Jib6.81Heavy Weather Jib18.39
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting Moment 75.3 Stability Index 127.4
COMMENTS
Weighted by measurer.
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  03420004IWF Issued on 25/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ANEMOSGRE-692
Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
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 VMG1794.31260.21042.9929.9863.6829.0814.9811.3832.0
52°1138.3822.2697.6633.4601.2584.4575.8572.0574.1
60°1056.8780.2667.8613.0585.8570.6561.7556.0555.2
75°1007.7756.5648.3597.6572.3556.6545.5531.3525.9
90°1039.7771.5651.7590.1562.9548.7538.4515.7499.5
110°1070.4767.7638.4579.9551.5531.1512.9487.3475.3
120°1116.1793.7654.5586.5554.0531.8510.9475.6457.2
135°1259.7872.6705.8614.5569.6543.3521.1479.1450.2
150°1495.11006.7789.7670.8601.7565.1541.5499.7464.5
Run VMG1726.31162.4910.0768.8676.4617.5579.4533.8495.9
Selected Courses
Windward / Leeward1760.31211.3976.5849.4770.0723.2697.1672.6663.9
All purpose1334.6940.3772.6684.9636.1608.1590.8569.0559.2
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward807.10.7434
All purpose661.20.9074
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6411
Downwind "popa"0.8003
70% up, 30% down "Ilhabela"0.6817
30% up, 70% down "Ilhabela-inverso"0.7448
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Predominantly Upwind718.10.8356
Predominantly Downwind667.50.8988
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP688.10.8719 Predom. Rc High542.41.1062 5B SF Bay L/M895.80.6698 TriNum AP Low856.40.7006 Predom. Dn Low1036.40.5789 5B SF Bay Med763.20.7861 TriNum AP Med656.80.9135 Predom. Dn L/M757.20.7923 5B SF Bay M/H690.30.8692 TriNum AP High586.91.0223 Predom. Dn Med642.00.9345 5B SF Bay High664.90.9024 TriNum W/L Low1147.80.5227 Predom. Dn M/H575.11.0433 5B AP Low952.50.6299 TriNum W/L Med801.90.7482 Predom. Dn High540.71.1097 5B AP L/M746.20.8040 TriNum W/L Hig694.40.8640 ChiMac Up Low915.90.6551 5B AP Med647.10.9272 Predom. Upwind749.30.8008 ChiMac Up Med822.70.7293 5B AP M/H593.81.0104 Predom. Reaching662.10.9062 ChiMac Up High715.80.8382 5B AP High571.11.0507 Predom. Downwind699.60.8576 ChiMac Off Low886.00.6772 5B W/L Low1289.80.4652 Predom. Up Low1047.00.5731 ChiMac Off Med779.60.7696 5B W/L L/M935.80.6412 Predom. Up L/M792.40.7572 ChiMac Off High655.50.9153 5B W/L Med786.50.7628 Predom. Up Med693.60.8651 ChiMac AP Low896.80.6690 5B W/L M/H703.50.8529 Predom. Up M/H644.50.9310 ChiMac AP Med798.30.7516 5B W/L High675.30.8885 Predom. Up High629.10.9538 ChiMac AP High683.90.8774 W/L 60-40 Low1299.70.4616 Predom. Rc Low930.00.6452 BayMac Cove Island1032.00.5814 W/L 60-40 L/M950.30.6314 Predom. Rc L/M702.90.8536 BayMac Shore1024.10.5859 W/L 60-40 Med805.20.7452 Predom. Rc Med614.70.9761 Harvest Moon583.21.0287 W/L 60-40 M/H727.00.8254 Predom. Rc M/H567.41.0574 5B SF Bay Low1089.70.5506 W/L 60-40 High703.40.8531      SA/DSPL Up17.27SA/DSPL Dn27.93
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance718.2
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating718.20.8354
FinRating, kevyt tuuli1272.40.7859
FinRating, kova tuuli575.90.8683
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8354
Triple Number Coastal/Long Distance Low0.7006
Triple Number Coastal/Long Distance Medium0.9136
Triple Number Coastal/Long Distance High1.0223
Triple Number Windward/Leeward Low0.5485
Triple Number Windward/Leeward Medium0.7482
Triple Number Windward/Leeward High0.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
For information
General Purpose Handicap (GPH)743.5
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Saronikos S All Purpose760.40.7890
Saronikos S Upwind860.10.6976
Saronikos S Downwind641.40.9354
Saronikos N All Purpose796.50.7533
Saronikos N Upwind897.20.6687
Saronikos N Downwind700.60.8564
Saronikos SW All Purpose770.90.7783
Saronikos SW Upwind886.40.6769
Saronikos SW Downwind655.60.9152
Saronikos NE All Purpose828.10.7245
Saronikos NE Upwind842.50.7122
Saronikos NE Downwind792.70.7569
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose688.10.8719
5-Band All Purpose Low1037.20.5785
5-Band All Purpose L/M772.60.7766
5-Band All Purpose Med666.60.9001
5-Band All Purpose M/H609.20.9849
5-Band All Purpose High584.41.0267
Single Number Predominant Upwind716.80.8370
Single Number Predominant Reaching635.30.9444
Single Number Predominant Downwind668.00.8982
5-Band 50-50 Windward/Leeward Low1289.80.4652
5-Band 50-50 Windward/Leeward L/M935.80.6412
5-Band 50-50 Windward/Leeward Med786.50.7628
5-Band 50-50 Windward/Leeward M/H703.50.8529
5-Band 50-50 Windward/Leeward High675.30.8885
5-Band 60-40 Windward/Leeward Low1299.70.4616
5-Band 60-40 Windward/Leeward L/M950.30.6314
5-Band 60-40 Windward/Leeward Med805.20.7452
5-Band 60-40 Windward/Leeward M/H727.00.8254
5-Band 60-40 Windward/Leeward High703.40.8531
Triple Number 50-50 Windward/Leeward Low1147.80.5227
Triple Number 50-50 Windward/Leeward Med802.10.7481
Triple Number 50-50 Windward/Leeward High694.50.8640
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward825.70.7267
Triple Number 60-40 Windward/Leeward Low1159.10.5176
Triple Number 60-40 Windward/Leeward Med820.10.7316
Triple Number 60-40 Windward/Leeward High719.00.8345
Triple Number All-Purpose Low930.50.6448
Triple Number All-Purpose Med677.10.8862
Triple Number All-Purpose High601.80.9971
Triple Number Predominant Upwind Low951.70.6305
Triple Number Predominant Upwind Med706.60.8491
Triple Number Predominant Upwind High645.50.9295
Triple Number Predominant Reaching Low843.20.7116
Triple Number Predominant Reaching Med633.10.9477
Triple Number Predominant Reaching High550.91.0891
Triple Number Predominant Downwind Low923.80.6495
Triple Number Predominant Downwind Med653.20.9185
Triple Number Predominant Downwind High554.41.0823
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low856.4
Triple Number Coastal/Long Distance Medium656.7
Triple Number Coastal/Long Distance High586.9
Triple Number Windward/Leeward Low1093.9
Triple Number Windward/Leeward Medium801.9
Triple Number Windward/Leeward High694.4
Predominantly Upwind718.1
Predominantly Downwind667.5
Predominantly Reaching644.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7006
Triple Number Coastal/Long Distance Medium0.9136
Triple Number Coastal/Long Distance High1.0223
Triple Number Windward/Leeward Low0.5485
Triple Number Windward/Leeward Medium0.7482
Triple Number Windward/Leeward High0.8640
Coastal/Long Distance0.8354
Predominantly Upwind0.8356
Predominantly Downwind0.8988
For information
General Purpose Handicap (GPH)743.5
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9074
Distanseseilas Trippeltall svak vind0.7006
Distanseseilas Trippeltall mellomvind0.9136
Distanseseilas Trippeltall sterk vind1.0223
Pølsebane Trippeltall svak vind0.5485
Pølsebane Trippeltall mellomvind0.7482
Pølsebane Trippeltall sterk vind0.8640
Motvind Singeltall0.8356
Medvind Singeltall0.8988
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Coastal/Long Distance718.20.8354
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind718.10.8356
Predominantly Downwind667.50.8988
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore666.50.9002
Cape Doctor Coastal562.11.0673
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7006
Triple Number Coastal/Long Distance Medium0.9136
Triple Number Coastal/Long Distance High1.0223
Triple Number Windward/Leeward Low0.5485
Triple Number Windward/Leeward Medium0.7482
Triple Number Windward/Leeward High0.8640
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7006
Triple Number Coastal/Long Distance Medium0.9136
Triple Number Coastal/Long Distance High1.0223
Triple Number Windward/Leeward Low0.5485
Triple Number Windward/Leeward Medium0.7482
Triple Number Windward/Leeward High0.8640
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Predominantly Upwind718.10.8356
Predominantly Downwind667.50.8988
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance718.20.8354
Triple Number Coastal/Long Distance Low856.40.7006
Triple Number Coastal/Long Distance Medium656.70.9136
Triple Number Coastal/Long Distance High586.91.0223
Triple Number Windward/Leeward Low1093.90.5485
Triple Number Windward/Leeward Medium801.90.7482
Triple Number Windward/Leeward High694.40.8640
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1756.91206.4919.3768.2678.1630.7597.4545.5532.2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP688.10.8719 Predom. Dn High540.71.1097 5B AP M/H593.81.0104 TriNum AP Low856.40.7006 Predom. Rc Low930.00.6452 5B AP High571.11.0507 TriNum AP Med656.80.9135 Predom. Rc L/M702.90.8536 5B SF Bay Low1089.70.5506 TriNum AP High586.91.0223 Predom. Rc Med614.70.9761 5B SF Bay L/M895.80.6698 TriNum W/L Low1147.80.5227 Predom. Rc M/H567.41.0574 5B SF Bay Med763.20.7861 TriNum W/L Med801.90.7482 Predom. Rc High542.41.1062 5B SF Bay M/H690.30.8692 TriNum W/L Hig694.40.8640 5B W/L Low1289.80.4652 5B SF Bay High664.90.9024 Predom. Upwind749.30.8008 5B W/L L/M935.80.6412 ChiMac Up Low915.90.6551 Predom. Reaching662.10.9062 5B W/L Med786.50.7628 ChiMac Up Med822.70.7293 Predom. Downwind699.60.8576 5B W/L M/H703.50.8529 ChiMac Up High715.80.8382 Predom. Up Low1047.00.5731 5B W/L High675.30.8885 ChiMac Off Low886.00.6772 Predom. Up L/M792.40.7572 W/L 60-40 Low1299.70.4616 ChiMac Off Med779.60.7696 Predom. Up Med693.60.8651 W/L 60-40 L/M950.30.6314 ChiMac Off High655.50.9153 Predom. Up M/H644.50.9310 W/L 60-40 Med805.20.7452 ChiMac AP Low896.80.6690 Predom. Up High629.10.9538 W/L 60-40 M/H727.00.8254 ChiMac AP Med798.30.7516 Predom. Dn Low1036.40.5789 W/L 60-40 High703.40.8531 ChiMac AP High683.90.8774 Predom. Dn L/M757.20.7923 5B AP Low952.50.6299 BayMac Cove Island1032.00.5814 Predom. Dn Med642.00.9345 5B AP L/M746.20.8040 BayMac Shore1024.10.5859 Predom. Dn M/H575.11.0433 5B AP Med647.10.9272 Harvest Moon583.21.0287      SA/DSPL Up17.27SA/DSPL Dn27.93
ORC Ref  03420004IWF Issued on 25/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ANEMOSGRE-692
Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 31Measurement06/10/2023HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.353Maximum beam3.166Draft1.788Displacement4,691Wetted area20.00IMS L7.521LSM07.319Accomod. length9.353Sink (kg/mm) 13.72
VCGD-0.078VCGM-0.058 RM Rated (kg·m) 75.3Limit of positive stability(°) 125.8 Stability Index 127.4 BLR index 0.0000Default crew weight441 Declared crew weight 400
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFeathering 2 blades
InstallationShaft non exposedTwin screwNoHydro generatorNo
PRD0.381PBW0.115PIPA0.0019
PSD0.025PHD0.082PHL0.160
PSA30.0°ESL0.215
RIG
BackstayFixedForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P10.200IG11.670ISP11.670MDT10.110MDL10.170MDT2MDL2TLNo TaperMWGO
E3.050J3.640BAS1.350FSDFoilSFJ0.000SPL3.750WPLTPSBDMWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date28/05/2024
SFFP0.641FFM1.270FF1.270LCFcl5.416SG
SAFP8.925FAM0.940FA0.940LCFsh5.643HBI1.137
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03420004IWF Issued on 25/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ANEMOSGRE-692
Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.140.621.101.852.4817.9106/10/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.040.671.322.674.045.3711.46NoNo 30.7406/10/2023
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.3011.3011.306.476.3860.7606/10/2023211.4511.4511.455.785.8255.2325/02/2026
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.4 mTable area0.44 m²Headroom1.66 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity68 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity38 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  03420004IWF Issued on 25/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org