Club Certificate2026
ARGOESP-10833_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
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 Angles48.9°46.8°45.0°43.4°42.2°41.2°40.8°40.2°40.7°
Beat VMG2.223.294.134.785.295.645.835.985.97
52°3.575.216.417.277.898.288.518.698.76
60°3.975.636.807.648.208.558.799.009.12
75°4.275.947.097.918.448.799.079.519.76
90°4.145.837.027.898.579.019.369.8010.27
110°3.915.697.078.108.759.239.7010.6011.39
120°3.775.516.887.938.629.129.6010.5711.72
135°3.274.866.227.318.168.749.2010.1311.20
150°2.714.085.306.377.288.028.569.3510.13
Run VMG2.353.534.595.526.316.957.468.299.01
Gybe Angles140.2°142.6°145.8°147.6°148.7°150.3°153.8°161.7°173.6°
APH ToD:521.1CDL: 11.801APH ToT: 1.1514CertNo:108331
BOAT
ClassDufour 520 GLDesignerFelciBuilderDufour yachtsAge date02/2019Series date01/2019Offset fileDufo520GL_CL.offData fileE10833_C
HULL
Length Overall14.750 mMaximum Beam4.798 mDraft2.229 mDisplacement15,043 kgDLR5.4745IMS DivisionCruiser/RacerDynamic Allowance0.400%Age Allowance0.228%RS Assessment-0.127%
PROPELLER
InstallationStrutTypeSolid 3 bladesDiameter0.460m
CREW
Maximum weight640 kg(declared)Minimum weight510 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail55.6857.00Headsail Luffed77.5377.53Headsail FlyingSymmetricAsymmetric146.72146.72 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail15.88Storm Jib14.88Heavy Weather Jib40.18
SAIL LIMITS
Headsails7
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers5
STABILITY
Righting Moment 657.3 kg·m Stability Index 127.3
COMMENTS
CASCO ESTIMADO. MEDIDAS ESTIMADAS
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  03510004BIU Issued on 14/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ARGOESP-10833_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
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 VMG1620.31094.7871.2752.6680.8638.0617.7602.0602.6
52°1007.6690.9561.5494.9456.3434.6422.8414.1410.9
60°907.8639.1529.1471.3439.3420.9409.7399.8394.8
75°842.1605.8507.8455.3426.7409.4396.8378.5368.8
90°868.8617.8513.1456.3420.2399.6384.7367.2350.4
110°921.5633.2509.1444.5411.4390.0371.1339.5316.0
120°955.5653.2523.2454.2417.4394.8375.1340.6307.1
135°1101.7740.1578.9492.3441.1411.8391.2355.4321.3
150°1328.8883.4679.3564.8494.4448.9420.5385.0355.3
Run VMG1534.31020.0784.4652.2570.9518.2482.8434.2399.4
Selected Courses
Windward / Leeward1577.31057.4827.8702.4625.9578.1550.2518.1501.0
All purpose1173.7799.0636.4548.8496.9465.4445.6420.5404.1
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward660.40.9085
All purpose521.11.1514
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7989
Downwind "popa"0.9411
70% up, 30% down "Ilhabela"0.8369
30% up, 70% down "Ilhabela-inverso"0.8934
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Predominantly Upwind566.01.0601
Predominantly Downwind537.01.1172
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP544.21.1025 Predom. Rc High397.21.5106 5B SF Bay L/M747.70.8025 TriNum AP Low717.70.8360 Predom. Dn Low890.30.6739 5B SF Bay Med614.60.9762 TriNum AP Med518.11.1582 Predom. Dn L/M625.20.9596 5B SF Bay M/H536.61.1182 TriNum AP High441.11.3601 Predom. Dn Med512.21.1713 5B SF Bay High504.71.1887 TriNum W/L Low993.50.6039 Predom. Dn M/H444.61.3496 5B AP Low807.60.7430 TriNum W/L Med656.20.9143 Predom. Dn High409.81.4642 5B AP L/M608.90.9854 TriNum W/L Hig545.21.1006 ChiMac Up Low765.60.7837 5B AP Med507.61.1820 Predom. Upwind595.71.0073 ChiMac Up Med670.50.8949 5B AP M/H449.01.3363 Predom. Reaching520.51.1526 ChiMac Up High560.61.0704 5B AP High422.01.4217 Predom. Downwind566.61.0589 ChiMac Off Low746.90.8033 5B W/L Low1130.00.5310 Predom. Up Low897.60.6685 ChiMac Off Med644.60.9308 5B W/L L/M787.60.7618 Predom. Up L/M645.30.9298 ChiMac Off High525.01.1428 5B W/L Med641.10.9359 Predom. Up Med541.71.1077 ChiMac AP Low751.60.7983 5B W/L M/H555.91.0794 Predom. Up M/H484.81.2376 ChiMac AP Med654.20.9171 5B W/L High520.71.1523 Predom. Up High463.81.2937 ChiMac AP High540.61.1098 W/L 60-40 Low1138.00.5272 Predom. Rc Low783.50.7658 BayMac Cove Island879.60.6821 W/L 60-40 L/M796.90.7529 Predom. Rc L/M566.01.0600 BayMac Shore871.70.6883 W/L 60-40 Med652.10.9201 Predom. Rc Med475.41.2622 Harvest Moon446.81.3430 W/L 60-40 M/H569.41.0537 Predom. Rc M/H422.81.4192 5B SF Bay Low938.40.6394 W/L 60-40 High537.51.1163      SA/DSPL Up21.66SA/DSPL Dn32.92
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance573.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating573.31.0466
FinRating, kevyt tuuli1112.50.8988
FinRating, kova tuuli424.21.1788
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.0466
Triple Number Coastal/Long Distance Low0.8360
Triple Number Coastal/Long Distance Medium1.1584
Triple Number Coastal/Long Distance High1.3601
Triple Number Windward/Leeward Low0.6365
Triple Number Windward/Leeward Medium0.9143
Triple Number Windward/Leeward High1.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
For information
General Purpose Handicap (GPH)594.5
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Saronikos S All Purpose616.70.9729
Saronikos S Upwind697.60.8601
Saronikos S Downwind522.51.1483
Saronikos N All Purpose643.50.9324
Saronikos N Upwind731.10.8207
Saronikos N Downwind573.21.0467
Saronikos SW All Purpose626.50.9578
Saronikos SW Upwind728.40.8237
Saronikos SW Downwind526.51.1397
Saronikos NE All Purpose674.40.8897
Saronikos NE Upwind681.00.8811
Saronikos NE Downwind656.10.9145
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose544.21.1025
5-Band All Purpose Low888.40.6753
5-Band All Purpose L/M632.70.9484
5-Band All Purpose Med525.41.1420
5-Band All Purpose M/H463.61.2943
5-Band All Purpose High435.91.3765
Single Number Predominant Upwind565.11.0618
Single Number Predominant Reaching495.51.2109
Single Number Predominant Downwind537.21.1168
5-Band 50-50 Windward/Leeward Low1130.00.5310
5-Band 50-50 Windward/Leeward L/M787.60.7618
5-Band 50-50 Windward/Leeward Med641.10.9359
5-Band 50-50 Windward/Leeward M/H555.91.0794
5-Band 50-50 Windward/Leeward High520.71.1523
5-Band 60-40 Windward/Leeward Low1138.00.5272
5-Band 60-40 Windward/Leeward L/M796.90.7529
5-Band 60-40 Windward/Leeward Med652.10.9201
5-Band 60-40 Windward/Leeward M/H569.41.0537
5-Band 60-40 Windward/Leeward High537.51.1163
Triple Number 50-50 Windward/Leeward Low993.50.6039
Triple Number 50-50 Windward/Leeward Med656.40.9141
Triple Number 50-50 Windward/Leeward High545.21.1006
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward671.60.8934
Triple Number 60-40 Windward/Leeward Low1001.80.5989
Triple Number 60-40 Windward/Leeward Med667.10.8994
Triple Number 60-40 Windward/Leeward High559.51.0724
Triple Number All-Purpose Low786.00.7634
Triple Number All-Purpose Med536.51.1183
Triple Number All-Purpose High455.51.3172
Triple Number Predominant Upwind Low803.60.7466
Triple Number Predominant Upwind Med555.91.0793
Triple Number Predominant Upwind High481.11.2471
Triple Number Predominant Reaching Low701.20.8556
Triple Number Predominant Reaching Med494.11.2142
Triple Number Predominant Reaching High406.41.4762
Triple Number Predominant Downwind Low783.60.7657
Triple Number Predominant Downwind Med525.51.1419
Triple Number Predominant Downwind High428.01.4020
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low717.7
Triple Number Coastal/Long Distance Medium518.0
Triple Number Coastal/Long Distance High441.1
Triple Number Windward/Leeward Low942.7
Triple Number Windward/Leeward Medium656.2
Triple Number Windward/Leeward High545.2
Predominantly Upwind566.0
Predominantly Downwind537.0
Predominantly Reaching507.4
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8360
Triple Number Coastal/Long Distance Medium1.1584
Triple Number Coastal/Long Distance High1.3601
Triple Number Windward/Leeward Low0.6365
Triple Number Windward/Leeward Medium0.9143
Triple Number Windward/Leeward High1.1006
Coastal/Long Distance1.0466
Predominantly Upwind1.0601
Predominantly Downwind1.1172
For information
General Purpose Handicap (GPH)594.5
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.1514
Distanseseilas Trippeltall svak vind0.8360
Distanseseilas Trippeltall mellomvind1.1584
Distanseseilas Trippeltall sterk vind1.3601
Pølsebane Trippeltall svak vind0.6365
Pølsebane Trippeltall mellomvind0.9143
Pølsebane Trippeltall sterk vind1.1006
Motvind Singeltall1.0601
Medvind Singeltall1.1172
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Coastal/Long Distance573.31.0466
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind566.01.0601
Predominantly Downwind537.01.1172
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore506.11.1855
Cape Doctor Coastal409.01.4669
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8360
Triple Number Coastal/Long Distance Medium1.1584
Triple Number Coastal/Long Distance High1.3601
Triple Number Windward/Leeward Low0.6365
Triple Number Windward/Leeward Medium0.9143
Triple Number Windward/Leeward High1.1006
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8360
Triple Number Coastal/Long Distance Medium1.1584
Triple Number Coastal/Long Distance High1.3601
Triple Number Windward/Leeward Low0.6365
Triple Number Windward/Leeward Medium0.9143
Triple Number Windward/Leeward High1.1006
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Predominantly Upwind566.01.0601
Predominantly Downwind537.01.1172
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance573.31.0466
Triple Number Coastal/Long Distance Low717.70.8360
Triple Number Coastal/Long Distance Medium518.01.1584
Triple Number Coastal/Long Distance High441.11.3601
Triple Number Windward/Leeward Low942.70.6365
Triple Number Windward/Leeward Medium656.20.9143
Triple Number Windward/Leeward High545.21.1006
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1573.01053.6774.5626.0534.6484.3449.6400.7381.3
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP544.21.1025 Predom. Dn High409.81.4642 5B AP M/H449.01.3363 TriNum AP Low717.70.8360 Predom. Rc Low783.50.7658 5B AP High422.01.4217 TriNum AP Med518.11.1582 Predom. Rc L/M566.01.0600 5B SF Bay Low938.40.6394 TriNum AP High441.11.3601 Predom. Rc Med475.41.2622 5B SF Bay L/M747.70.8025 TriNum W/L Low993.50.6039 Predom. Rc M/H422.81.4192 5B SF Bay Med614.60.9762 TriNum W/L Med656.20.9143 Predom. Rc High397.21.5106 5B SF Bay M/H536.61.1182 TriNum W/L Hig545.21.1006 5B W/L Low1130.00.5310 5B SF Bay High504.71.1887 Predom. Upwind595.71.0073 5B W/L L/M787.60.7618 ChiMac Up Low765.60.7837 Predom. Reaching520.51.1526 5B W/L Med641.10.9359 ChiMac Up Med670.50.8949 Predom. Downwind566.61.0589 5B W/L M/H555.91.0794 ChiMac Up High560.61.0704 Predom. Up Low897.60.6685 5B W/L High520.71.1523 ChiMac Off Low746.90.8033 Predom. Up L/M645.30.9298 W/L 60-40 Low1138.00.5272 ChiMac Off Med644.60.9308 Predom. Up Med541.71.1077 W/L 60-40 L/M796.90.7529 ChiMac Off High525.01.1428 Predom. Up M/H484.81.2376 W/L 60-40 Med652.10.9201 ChiMac AP Low751.60.7983 Predom. Up High463.81.2937 W/L 60-40 M/H569.41.0537 ChiMac AP Med654.20.9171 Predom. Dn Low890.30.6739 W/L 60-40 High537.51.1163 ChiMac AP High540.61.1098 Predom. Dn L/M625.20.9596 5B AP Low807.60.7430 BayMac Cove Island879.60.6821 Predom. Dn Med512.21.1713 5B AP L/M608.90.9854 BayMac Shore871.70.6883 Predom. Dn M/H444.61.3496 5B AP Med507.61.1820 Harvest Moon446.81.3430      SA/DSPL Up21.66SA/DSPL Dn32.92
ORC Ref  03510004BIU Issued on 14/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ARGOESP-10833_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDufour 520 GLMeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall14.750Maximum beam4.798Draft2.229Displacement15,043Wetted area51.06IMS L13.980LSM014.005Accomod. length14.620Sink (kg/mm) 41.57
VCGD-0.219VCGM-0.139 RM Rated (kg·m) 657.3Limit of positive stability(°) 120.9 Stability Index 127.3 BLR index 0.0000Default crew weight1,113 Declared crew weight 640
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeSolid 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.460PBWPIPA0.0257
EDLST1ST2
ST3ST4ST5
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerIn mastArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P16.200IG17.250ISP17.550MDT10.100MDL10.110MDT2MDL2TLMWGO
E5.600J5.590BAS1.900FSD0.040SFJ0.000SPLWPLTPS6.000BDMWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.200Flotation Date01/01/2010
SFFP0.658FFMFF1.670LCFcl8.296SG
SAFP14.475FAMFA1.257LCFsh8.613HBI1.457
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03510004BIU Issued on 14/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ARGOESP-10833_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment155.68
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment18.40NoNo 77.53
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment117.50NaN146.72
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length14.6 mTable area0.66 m²Headroom1.90 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity258 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity142 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  03510004BIU Issued on 14/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org