Club Certificate2026
VENTANEIRO 3BRA 2505
ABVO - www.abvo.org.br
Associação Brasileira
de Vela Oceânica
CBVELA - ISAF World Sailing
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 Angles48.6°46.3°44.5°43.1°41.9°40.8°40.4°40.1°40.8°
Beat VMG2.243.314.164.815.335.705.896.015.97
52°3.595.226.427.287.918.328.558.718.75
60°3.955.626.797.648.208.578.819.019.08
75°4.225.907.067.898.438.799.069.479.66
90°4.155.987.358.298.819.089.279.6610.11
110°4.296.237.648.569.119.579.9810.5310.99
120°4.176.117.528.469.049.5210.0010.9811.73
135°3.655.366.877.968.679.179.6410.6712.04
150°3.024.495.756.967.928.558.999.7710.63
Run VMG2.623.894.986.026.867.437.888.629.29
Gybe Angles139.4°142.1°145.8°145.6°150.3°152.3°156.1°161.2°159.3°
APH ToD:503.9CDL: 11.853APH ToT: 1.1906CertNo:2505.2026.01
BOAT
ClassDufour 500DesignerUmberto FelciBuilderDufour YachtsAge date07/2013Series date09/2012Offset fileduf500b.offData fileBRA2505
HULL
Length Overall14.750Maximum Beam4.796Draft2.306Displacement15,301DLR5.9006IMS DivisionCruiser/RacerDynamic Allowance0.320%Age Allowance0.455%RS Assessment-0.356%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.530m
CREW
Maximum weight1,065(declared)Minimum weight905 ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail58.5759.64Headsail Luffed56.4756.47Headsail FlyingSymmetricAsymmetric201.33201.33 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail16.96Storm Jib16.76Heavy Weather Jib45.24
SAIL LIMITS
Headsails7Spinnakers5
STABILITY
Righting Moment 538.1 Stability Index 119.5
COMMENTS
Crew Weight Disable HeadSail Furler
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  04420004BWD Issued on 19/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
VENTANEIRO 3BRA 2505
ABVO - www.abvo.org.br
Associação Brasileira
de Vela Oceânica
CBVELA - ISAF World Sailing
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 VMG1608.91086.5866.0748.0674.9631.7611.3599.2603.4
52°1003.6689.3561.1494.2454.9432.7421.0413.1411.6
60°911.9640.3529.9471.5438.8419.9408.8399.4396.3
75°853.3610.4509.7456.1427.1409.7397.1380.2372.5
90°867.1602.4489.7434.5408.8396.6388.3372.7356.1
110°838.4578.3471.1420.5395.1376.1360.9342.0327.6
120°862.6589.4478.8425.4398.4378.1360.0327.7307.0
135°985.1672.2523.7452.1415.3392.7373.5337.4299.1
150°1191.8802.3625.6517.6454.7420.9400.4368.4338.5
Run VMG1376.2926.4722.4597.6524.9484.4457.0417.6387.4
Selected Courses
Windward / Leeward1492.51006.4794.2672.8599.9558.0534.2508.4495.4
All purpose1118.4763.1610.3527.7480.8453.2436.0415.1401.3
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward634.70.9453
All purpose503.91.1906
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.8050
Downwind "popa"1.0169
70% up, 30% down "Ilhabela"0.8587
30% up, 70% down "Ilhabela-inverso"0.9425
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Predominantly Upwind554.01.0830
Predominantly Downwind508.71.1795
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP526.31.1401 Predom. Rc High392.21.5299 5B SF Bay L/M717.90.8358 TriNum AP Low686.70.8738 Predom. Dn Low828.60.7241 5B SF Bay Med592.51.0126 TriNum AP Med500.41.1991 Predom. Dn L/M585.91.0241 5B SF Bay M/H522.01.1494 TriNum AP High432.51.3874 Predom. Dn Med485.71.2354 5B SF Bay High495.11.2118 TriNum W/L Low947.40.6333 Predom. Dn M/H429.11.3983 5B AP Low766.80.7825 TriNum W/L Med629.90.9525 Predom. Dn High398.31.5063 5B AP L/M584.51.0265 TriNum W/L Hig530.51.1311 ChiMac Up Low747.40.8028 5B AP Med491.01.2220 Predom. Upwind583.91.0277 ChiMac Up Med655.60.9151 5B AP M/H439.11.3663 Predom. Reaching502.01.1953 ChiMac Up High550.11.0907 5B AP High416.31.4412 Predom. Downwind535.91.1197 ChiMac Off Low697.80.8599 5B W/L Low1074.90.5582 Predom. Up Low875.50.6853 ChiMac Off Med605.50.9909 5B W/L L/M754.00.7958 Predom. Up L/M630.10.9523 ChiMac Off High498.41.2039 5B W/L Med615.80.9744 Predom. Up Med530.91.1302 ChiMac AP Low718.70.8349 5B W/L M/H539.41.1124 Predom. Up M/H478.41.2541 ChiMac AP Med627.80.9557 5B W/L High510.61.1751 Predom. Up High460.01.3044 ChiMac AP High522.51.1484 W/L 60-40 Low1092.30.5493 Predom. Rc Low747.50.8027 BayMac Cove Island839.30.7149 W/L 60-40 L/M768.90.7803 Predom. Rc L/M539.61.1119 BayMac Shore833.20.7201 W/L 60-40 Med630.70.9513 Predom. Rc Med458.61.3084 Harvest Moon432.51.3874 W/L 60-40 M/H555.11.0809 Predom. Rc M/H415.21.4451 5B SF Bay Low897.80.6683 W/L 60-40 High528.91.1345      SA/DSPL Up18.50SA/DSPL Dn41.79
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance553.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating553.31.0843
FinRating, kevyt tuuli1056.30.9467
FinRating, kova tuuli418.41.1949
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.0843
Triple Number Coastal/Long Distance Low0.8738
Triple Number Coastal/Long Distance Medium1.1993
Triple Number Coastal/Long Distance High1.3874
Triple Number Windward/Leeward Low0.6664
Triple Number Windward/Leeward Medium0.9525
Triple Number Windward/Leeward High1.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
For information
General Purpose Handicap (GPH)573.5
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Saronikos S All Purpose602.00.9966
Saronikos S Upwind693.00.8658
Saronikos S Downwind487.81.2301
Saronikos N All Purpose602.00.9966
Saronikos N Upwind725.40.8271
Saronikos N Downwind528.91.1344
Saronikos SW All Purpose609.60.9842
Saronikos SW Upwind722.80.8301
Saronikos SW Downwind489.41.2259
Saronikos NE All Purpose649.10.9244
Saronikos NE Upwind676.50.8869
Saronikos NE Downwind601.30.9978
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose526.31.1401
5-Band All Purpose Low847.90.7077
5-Band All Purpose L/M605.60.9908
5-Band All Purpose Med506.91.1837
5-Band All Purpose M/H453.21.3238
5-Band All Purpose High429.01.3986
Single Number Predominant Upwind553.61.0838
Single Number Predominant Reaching477.21.2574
Single Number Predominant Downwind508.51.1799
5-Band 50-50 Windward/Leeward Low1074.90.5582
5-Band 50-50 Windward/Leeward L/M754.00.7958
5-Band 50-50 Windward/Leeward Med615.80.9744
5-Band 50-50 Windward/Leeward M/H539.41.1124
5-Band 50-50 Windward/Leeward High510.61.1751
5-Band 60-40 Windward/Leeward Low1092.30.5493
5-Band 60-40 Windward/Leeward L/M768.90.7803
5-Band 60-40 Windward/Leeward Med630.70.9513
5-Band 60-40 Windward/Leeward M/H555.11.0809
5-Band 60-40 Windward/Leeward High528.91.1345
Triple Number 50-50 Windward/Leeward Low947.40.6333
Triple Number 50-50 Windward/Leeward Med630.00.9523
Triple Number 50-50 Windward/Leeward High530.51.1311
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward649.90.9233
Triple Number 60-40 Windward/Leeward Low963.50.6228
Triple Number 60-40 Windward/Leeward Med644.90.9303
Triple Number 60-40 Windward/Leeward High546.71.0974
Triple Number All-Purpose Low750.70.7993
Triple Number All-Purpose Med516.71.1612
Triple Number All-Purpose High446.21.3446
Triple Number Predominant Upwind Low782.50.7668
Triple Number Predominant Upwind Med544.21.1026
Triple Number Predominant Upwind High476.71.2587
Triple Number Predominant Reaching Low669.00.8969
Triple Number Predominant Reaching Med475.91.2607
Triple Number Predominant Reaching High400.31.4988
Triple Number Predominant Downwind Low731.80.8199
Triple Number Predominant Downwind Med495.31.2115
Triple Number Predominant Downwind High412.71.4540
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low686.7
Triple Number Coastal/Long Distance Medium500.3
Triple Number Coastal/Long Distance High432.5
Triple Number Windward/Leeward Low900.4
Triple Number Windward/Leeward Medium629.9
Triple Number Windward/Leeward High530.5
Predominantly Upwind554.0
Predominantly Downwind508.7
Predominantly Reaching485.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8738
Triple Number Coastal/Long Distance Medium1.1993
Triple Number Coastal/Long Distance High1.3874
Triple Number Windward/Leeward Low0.6664
Triple Number Windward/Leeward Medium0.9525
Triple Number Windward/Leeward High1.1311
Coastal/Long Distance1.0843
Predominantly Upwind1.0830
Predominantly Downwind1.1795
For information
General Purpose Handicap (GPH)573.5
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.1906
Distanseseilas Trippeltall svak vind0.8738
Distanseseilas Trippeltall mellomvind1.1993
Distanseseilas Trippeltall sterk vind1.3874
Pølsebane Trippeltall svak vind0.6664
Pølsebane Trippeltall mellomvind0.9525
Pølsebane Trippeltall sterk vind1.1311
Motvind Singeltall1.0830
Medvind Singeltall1.1795
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Coastal/Long Distance553.31.0843
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind554.01.0830
Predominantly Downwind508.71.1795
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore499.31.2018
Cape Doctor Coastal405.51.4798
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8738
Triple Number Coastal/Long Distance Medium1.1993
Triple Number Coastal/Long Distance High1.3874
Triple Number Windward/Leeward Low0.6664
Triple Number Windward/Leeward Medium0.9525
Triple Number Windward/Leeward High1.1311
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8738
Triple Number Coastal/Long Distance Medium1.1993
Triple Number Coastal/Long Distance High1.3874
Triple Number Windward/Leeward Low0.6664
Triple Number Windward/Leeward Medium0.9525
Triple Number Windward/Leeward High1.1311
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Predominantly Upwind554.01.0830
Predominantly Downwind508.71.1795
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance553.31.0843
Triple Number Coastal/Long Distance Low686.70.8738
Triple Number Coastal/Long Distance Medium500.31.1993
Triple Number Coastal/Long Distance High432.51.3874
Triple Number Windward/Leeward Low900.40.6664
Triple Number Windward/Leeward Medium629.90.9525
Triple Number Windward/Leeward High530.51.1311
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1480.9998.4741.6600.2515.9470.8440.0394.8380.0
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP526.31.1401 Predom. Dn High398.31.5063 5B AP M/H439.11.3663 TriNum AP Low686.70.8738 Predom. Rc Low747.50.8027 5B AP High416.31.4412 TriNum AP Med500.41.1991 Predom. Rc L/M539.61.1119 5B SF Bay Low897.80.6683 TriNum AP High432.51.3874 Predom. Rc Med458.61.3084 5B SF Bay L/M717.90.8358 TriNum W/L Low947.40.6333 Predom. Rc M/H415.21.4451 5B SF Bay Med592.51.0126 TriNum W/L Med629.90.9525 Predom. Rc High392.21.5299 5B SF Bay M/H522.01.1494 TriNum W/L Hig530.51.1311 5B W/L Low1074.90.5582 5B SF Bay High495.11.2118 Predom. Upwind583.91.0277 5B W/L L/M754.00.7958 ChiMac Up Low747.40.8028 Predom. Reaching502.01.1953 5B W/L Med615.80.9744 ChiMac Up Med655.60.9151 Predom. Downwind535.91.1197 5B W/L M/H539.41.1124 ChiMac Up High550.11.0907 Predom. Up Low875.50.6853 5B W/L High510.61.1751 ChiMac Off Low697.80.8599 Predom. Up L/M630.10.9523 W/L 60-40 Low1092.30.5493 ChiMac Off Med605.50.9909 Predom. Up Med530.91.1302 W/L 60-40 L/M768.90.7803 ChiMac Off High498.41.2039 Predom. Up M/H478.41.2541 W/L 60-40 Med630.70.9513 ChiMac AP Low718.70.8349 Predom. Up High460.01.3044 W/L 60-40 M/H555.11.0809 ChiMac AP Med627.80.9557 Predom. Dn Low828.60.7241 W/L 60-40 High528.91.1345 ChiMac AP High522.51.1484 Predom. Dn L/M585.91.0241 5B AP Low766.80.7825 BayMac Cove Island839.30.7149 Predom. Dn Med485.71.2354 5B AP L/M584.51.0265 BayMac Shore833.20.7201 Predom. Dn M/H429.11.3983 5B AP Med491.01.2220 Harvest Moon432.51.3874      SA/DSPL Up18.50SA/DSPL Dn41.79
ORC Ref  04420004BWD Issued on 19/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
VENTANEIRO 3BRA 2505
ABVO - www.abvo.org.br
Associação Brasileira
de Vela Oceânica
CBVELA - ISAF World Sailing
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDufour 500Measurement19/03/2025HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall14.750Maximum beam4.796Draft2.306Displacement15,301Wetted area51.48IMS L13.915LSM013.737Accomod. length14.750Sink (kg/mm) 39.78
VCGD0.162VCGM0.148 RM Rated (kg·m) 538.1Limit of positive stability(°) 112.9 Stability Index 119.5 BLR index 0.0000Default crew weight1,083 Declared crew weight 1,065
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.530PBW0.137PIPA0.0043
EDL3.870ST10.067ST20.177
ST30.177ST40.110ST50.310
RIG
BackstayAdjustable (NMP)ForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P17.460IG18.272ISP19.342MDT10.185MDL10.305MDT20.185MDL20.305TL0.000MW0.305GO0.315
E5.550J5.380BAS1.820FSD0.056SFJ0.280SPLWPLTPS6.470BD0.247MWT474.00MCG7.070
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date19/03/2025MeasurerBRAM11
SFFP0.028FFM1.755FF1.783LCFcl8.250SG1.0240
SAFP14.750FAM1.332FA1.317LCFsh8.569HBI1.548
W1297.0W2297.0W3297.0W4297.0LCFD
PD1215.1PD2229.1PD3235.0PD4227.6
WD5.140PLM9000.00GSA1.0RSA1.0RM530.9
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG#H2o BOILER INOXWater900#PVC CABINE DE POPA BBFuel250160#PVC CABINE DE POPA BEFuel25010#H2o PVS CABINE DE PROAWater2800#H2o PVC PISO DO SALÃO BEWater1850#H2o PVC PISO SALÃO BBWater1850Total deductible143
OTHER ITEMSIdKindDescriptionWeightLCGVCG2MiscellaneousBUJÃO DE GAZ 5 Kg POPA BB#MiscellaneousRADAR#MiscellaneousFREZER DEGA PISO SALÃO#MiscellaneousGUINCHO DE ANCORA PROA#MiscellaneousCARREGADOR BATERIAS 60Amp BE#MiscellaneousBUJÃO DE GAS 9 KG POPA BB#MiscellaneousFREZER BB#MiscellaneousINVERSOR SALÃO BE2MiscellaneousAR CONDICIONADO SALÃO BB#MiscellaneousWATER MAKER SALÃO BE1BatteryBATERIA 90Amp GERADOR1BatteryBATERIA 150Amp MOTOR3BatteryBATERIA 220Amp CENTOR PISO SALÃO SERVIÇO#Engine (IC)GERADOR KULLER 5 kw#Engine (IC)VOLVO PENTA 75 HP#Deck GearCHURRASQUEIRA POPA COCKPITTTotal deductible
ORC Ref  04420004BWD Issued on 19/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
VENTANEIRO 3BRA 2505
ABVO - www.abvo.org.br
Associação Brasileira
de Vela Oceânica
CBVELA - ISAF World Sailing
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM30.211.232.183.654.6958.5718/03/2025REMEDIÇÃO
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment4-G0.141.071.933.344.605.8917.66YesNo 56.4718/03/2025REMEDIDACRU-10.120.841.623.144.595.9617.87YesNo 55.0824/09/2019Nordac
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2-321.1718.7919.9811.9312.7494%201.3318/03/2025REMEDIDA BRANCAA221.2118.5919.9011.6012.1895%194.2921/03/2025REMEDIDA
NON MANUAL POWER CONTROLS (NMP)
SheetsYesMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsYes
CRUISER/RACER REQUIREMENTS*
Accommodation length14.8 mTable area0.66 m²Headroom1.90 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity264 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity146 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04420004BWD Issued on 19/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org