Club Certificate2025
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 Angles46.7°46.7°44.9°43.4°42.0°41.2°40.7°40.2°40.6°
Beat VMG2.323.314.154.805.315.655.835.985.98
52°3.755.236.437.297.908.298.518.698.76
60°4.135.656.827.658.208.558.789.009.11
75°4.405.957.097.918.438.799.079.509.75
90°4.275.837.027.898.569.009.359.8010.29
110°4.035.687.078.098.749.229.6910.6311.46
120°3.905.516.887.928.629.119.5910.5911.81
135°3.364.866.217.318.158.739.1910.1411.24
150°2.774.075.296.377.278.018.559.3410.14
Run VMG2.403.534.595.516.306.947.458.289.01
Gybe Angles142.6°142.6°145.8°147.6°148.7°150.3°153.8°161.7°173.6°
APH ToD:520.8CDL: 11.832APH ToT: 1.1522CertNo: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 Allowance0.195%
PROPELLER
InstallationStrutTypeSolid 3 bladesDiameter0.460m
CREW
Maximum weight640 kg(declared)Minimum weight510 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail55.6857.00Headsail Luffed77.5377.53Headsail FlyingSymmetricAsymmetric146.72146.72 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail15.88Storm Jib14.88Heavy Weather Jib40.18
SAIL LIMITS
Headsails7
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers5
STABILITY
Righting MomentN/AStability IndexN/A
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  03510003FR3Issued on 13/01/2025Valid until 31/12/2025
VPP ver: 2025 1.00 | © ORC | www.orc.org
Club Certificate2025
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 VMG1548.51088.5867.1749.6678.6637.0617.4601.9602.3
52°959.1687.8559.7493.8455.8434.4422.9414.3411.1
60°872.1637.0528.1470.8439.1421.0409.9400.1395.1
75°818.5604.9507.5455.3426.8409.6397.0378.8369.1
90°843.5617.5513.1456.5420.5399.9385.0367.5349.7
110°892.5633.5509.4444.8411.7390.3371.4338.6314.1
120°923.8653.6523.5454.5417.8395.1375.5339.9304.8
135°1072.2740.7579.4492.8441.5412.2391.6355.2320.3
150°1298.7884.2679.9565.3494.9449.3420.9385.3355.1
Run VMG1499.61021.0785.1652.8571.5518.7483.3434.6399.8
Selected Courses
Windward / Leeward1523.51054.7826.1701.2625.0577.9550.4518.3501.0
All purpose1132.8797.4635.5548.3496.6465.4445.8420.5403.6
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward659.60.9096
All purpose520.81.1522
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8015
Downwind "popa"0.9402
70% up, 30% down "Ilhabela"0.8386
30% up, 70% down "Ilhabela-inverso"0.8938
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Predominantly Upwind565.11.0618
Predominantly Downwind537.11.1171
Custom scoring options for Canada
Scoring OptionTODTOT
TriNum AP Low716.50.8375
TriNum AP Med517.71.1590
TriNum AP High441.21.3599
TriNum W/L Low986.30.6083
TriNum W/L Med655.40.9155
TriNum W/L Hig545.21.1005
Predom. Upwind592.41.0129
Predom. Reaching518.71.1568
Predom. Downwind564.91.0622
Predom. Up Low883.30.6793
Predom. Up L/M643.60.9322
Predom. Up Med540.91.1093
Predom. Up M/H484.81.2377
Predom. Up High463.81.2935
Predom. Dn Low881.10.6810
Predom. Dn L/M625.20.9597
Predom. Dn Med512.41.1710
Predom. Dn M/H444.81.3489
Predom. Dn High409.91.4639
Predom. Rc Low774.10.7751
Predom. Rc L/M565.61.0607
Predom. Rc Med475.31.2622
Predom. Rc M/H423.01.4185
Predom. Rc High397.21.5105
SA/DSPL Upwind21.66SA/DSPL Downwind32.92
Scoring OptionTODTOT
5B W/L Low1114.90.5382
5B W/L L/M786.10.7633
5B W/L Med640.30.9370
5B W/L M/H555.81.0795
5B W/L High520.81.1520
W/L 60-40 Low1121.50.5350
W/L 60-40 L/M794.90.7548
W/L 60-40 Med651.10.9216
W/L 60-40 M/H569.31.0539
W/L 60-40 High537.61.1161
5B AP Low798.00.7519
5B AP L/M608.10.9867
5B AP Med507.31.1826
5B AP M/H449.11.3360
5B AP High422.01.4219
5B SF Bay Low951.60.6305
5B SF Bay L/M749.10.8010
5B SF Bay Med613.80.9775
5B SF Bay M/H536.51.1183
5B SF Bay High504.81.1887
Chicago-Mac Upwind0.9703
Chicago-Mac All Purpose0.9972
Chicago-Mac Downwind1.0151
BayMac Cove Island865.90.6929
BayMac Shore859.00.6985
Harvest Moon440.11.3633
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance572.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating572.81.0475
FinRating, kevyt tuuli1093.10.9148
FinRating, kova tuuli424.01.1792
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0475
Triple Number Coastal/Long Distance Low0.8375
Triple Number Coastal/Long Distance Medium1.1592
Triple Number Coastal/Long Distance High1.3599
Triple Number Windward/Leeward Low0.6380
Triple Number Windward/Leeward Medium0.9155
Triple Number Windward/Leeward High1.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
For information
General Purpose Handicap (GPH)594.0
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low716.4
Triple Number Coastal/Long Distance Medium517.6
Triple Number Coastal/Long Distance High441.2
Triple Number Windward/Leeward Low940.4
Triple Number Windward/Leeward Medium655.4
Triple Number Windward/Leeward High545.2
Predominantly Upwind565.1
Predominantly Downwind537.1
Predominantly Reaching507.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8375
Triple Number Coastal/Long Distance Medium1.1592
Triple Number Coastal/Long Distance High1.3599
Triple Number Windward/Leeward Low0.6380
Triple Number Windward/Leeward Medium0.9155
Triple Number Windward/Leeward High1.1005
Coastal/Long Distance1.0475
Predominantly Upwind1.0618
Predominantly Downwind1.1171
For information
General Purpose Handicap (GPH)594.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1522
Distanseseilas Trippeltall svak vind0.8375
Distanseseilas Trippeltall mellomvind1.1592
Distanseseilas Trippeltall sterk vind1.3599
Pølsebane Trippeltall svak vind0.6380
Pølsebane Trippeltall mellomvind0.9155
Pølsebane Trippeltall sterk vind1.1005
Motvind Singeltall1.0618
Medvind Singeltall1.1171
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Coastal/Long Distance572.81.0475
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind565.11.0618
Predominantly Downwind537.11.1171
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore506.21.1853
Cape Doctor Coastal408.71.4681
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8375
Triple Number Coastal/Long Distance Medium1.1592
Triple Number Coastal/Long Distance High1.3599
Triple Number Windward/Leeward Low0.6380
Triple Number Windward/Leeward Medium0.9155
Triple Number Windward/Leeward High1.1005
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8375
Triple Number Coastal/Long Distance Medium1.1592
Triple Number Coastal/Long Distance High1.3599
Triple Number Windward/Leeward Low0.6380
Triple Number Windward/Leeward Medium0.9155
Triple Number Windward/Leeward High1.1005
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Predominantly Upwind565.11.0618
Predominantly Downwind537.11.1171
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance572.81.0475
Triple Number Coastal/Long Distance Low716.40.8375
Triple Number Coastal/Long Distance Medium517.61.1592
Triple Number Coastal/Long Distance High441.21.3599
Triple Number Windward/Leeward Low940.40.6380
Triple Number Windward/Leeward Medium655.40.9155
Triple Number Windward/Leeward High545.21.1005
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1625.71051.4773.1625.2534.1484.3449.8400.7380.6
Custom scoring options for United States of America
Scoring OptionTODTOT
TriNum AP Low716.50.8375
TriNum AP Med517.71.1590
TriNum AP High441.21.3599
TriNum W/L Low986.30.6083
TriNum W/L Med655.40.9155
TriNum W/L Hig545.21.1005
Predom. Upwind592.41.0129
Predom. Reaching518.71.1568
Predom. Downwind564.91.0622
Predom. Up Low883.30.6793
Predom. Up L/M643.60.9322
Predom. Up Med540.91.1093
Predom. Up M/H484.81.2377
Predom. Up High463.81.2935
Predom. Dn Low881.10.6810
Predom. Dn L/M625.20.9597
Predom. Dn Med512.41.1710
Predom. Dn M/H444.81.3489
Predom. Dn High409.91.4639
Predom. Rc Low774.10.7751
Predom. Rc L/M565.61.0607
Predom. Rc Med475.31.2622
Predom. Rc M/H423.01.4185
Predom. Rc High397.21.5105
SA/DSPL Upwind21.66SA/DSPL Downwind32.92
Scoring OptionTODTOT
5B W/L Low1114.90.5382
5B W/L L/M786.10.7633
5B W/L Med640.30.9370
5B W/L M/H555.81.0795
5B W/L High520.81.1520
W/L 60-40 Low1121.50.5350
W/L 60-40 L/M794.90.7548
W/L 60-40 Med651.10.9216
W/L 60-40 M/H569.31.0539
W/L 60-40 High537.61.1161
5B AP Low798.00.7519
5B AP L/M608.10.9867
5B AP Med507.31.1826
5B AP M/H449.11.3360
5B AP High422.01.4219
5B SF Bay Low951.60.6305
5B SF Bay L/M749.10.8010
5B SF Bay Med613.80.9775
5B SF Bay M/H536.51.1183
5B SF Bay High504.81.1887
Chicago-Mac Upwind0.9703
Chicago-Mac All Purpose0.9972
Chicago-Mac Downwind1.0151
BayMac Cove Island865.90.6929
BayMac Shore859.00.6985
Harvest Moon440.11.3633
ORC Ref  03510003FR3Issued on 13/01/2025Valid until 31/12/2025
VPP ver: 2025 1.00 | © ORC | www.orc.org
Club Certificate2025
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
LOA14.750Max. Beam4.798Draft2.229Displacement15,043Wetted area51.06IMS L13.980LSM014.005Acc. length14.620Sink (kg/mm) 41.57
VCGD-0.219VCGM-0.139RM Rated (kg·m) 657.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight1,113Declared crew weight640
PROPELLER
Propeller TypeSolid 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.460PBWPIPA0.0257
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerIn mastArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P16.200IG17.250ISP17.550MDT10.100MDL10.110MDT2MDL2TLMWGO
E5.600J5.590BAS1.900FSD0.040SFJ0.000SPLWPLTPS6.000BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.200Flotation Date01/01/2010
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03510003FR3Issued on 13/01/2025Valid until 31/12/2025
VPP ver: 2025 1.00 | © ORC | www.orc.org
Club Certificate2025
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
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  03510003FR3Issued on 13/01/2025Valid until 31/12/2025
VPP ver: 2025 1.00 | © ORC | www.orc.org