Club Certificate2025
OSTROESP-11327_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 Angles45.8°45.8°43.8°42.3°41.2°40.7°40.3°40.2°40.8°
Beat VMG2.623.664.505.135.555.765.875.975.94
52°4.205.736.887.698.178.428.548.678.71
60°4.576.147.258.008.458.708.828.979.03
75°4.856.457.538.248.688.979.179.439.59
90°4.776.357.478.348.839.109.329.7910.10
110°4.566.307.668.559.089.519.9110.4710.90
120°4.446.157.518.428.989.449.9010.8011.55
135°3.935.526.867.908.619.099.5410.4911.64
150°3.224.625.886.957.848.498.939.7010.51
Run VMG2.794.005.096.026.797.387.858.629.29
Gybe Angles142.0°142.0°146.0°148.9°150.3°152.6°157.0°163.3°162.0°
APH ToD:493.9CDL: 12.282APH ToT: 1.2148CertNo:1132701
BOAT
ClassDUFOUR 530DesignerFELCIBuilderDUFOUR YACHTSAge date02/2023Series date01/2023Offset fileDufour525.offData fileE11327_C
HULL
Length Overall15.500 mMaximum Beam4.908 mDraft2.059 mDisplacement17,473 kgDLR6.3167IMS DivisionCruiser/RacerDynamic Allowance0.340%Age Allowance0.065%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.400m
CREW
Maximum weight600 kg(declared)Minimum weight470 kg ✱ when appliedNon Manual PowerYesCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail71.1572.50Headsail Luffed72.4072.40Headsail FlyingSymmetricAsymmetric184.42184.42 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail20.29Storm Jib19.02Heavy Weather Jib51.34
SAIL LIMITS
Headsails7
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers5
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
CASCO ESTIMADO MEDIDAS CATALOGO
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.
Club Certificate2025
OSTROESP-11327_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 VMG1374.1984.8799.9701.8649.0625.5612.9602.9605.7
52°856.5628.2523.1468.4440.8427.7421.6415.1413.5
60°788.3586.5496.3449.8425.9413.8408.2401.3398.7
75°742.9558.3477.8436.7414.7401.5392.5381.9375.4
90°755.1566.9482.1431.8407.7395.7386.4367.8356.5
110°789.7571.1469.8421.2396.7378.5363.4343.8330.2
120°811.0585.0479.5427.4400.8381.2363.6333.3311.6
135°916.7652.2525.0455.9418.4395.9377.2343.3309.4
150°1117.6778.8612.6517.9459.1424.1403.0371.2342.6
Run VMG1290.5899.2707.4598.1529.9487.8458.6417.5387.6
Selected Courses
Windward / Leeward1331.9942.0753.7649.9589.5556.7535.7510.2496.6
All purpose996.9717.3584.6513.1473.6451.8437.0417.0404.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward619.70.9682
All purpose493.91.2148
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8439
Downwind "popa"1.0248
70% up, 30% down "Ilhabela"0.8911
30% up, 70% down "Ilhabela-inverso"0.9629
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Predominantly Upwind537.31.1166
Predominantly Downwind503.31.1922
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low650.90.9218
Triple Number AP Medium490.61.2229
Triple Number AP High433.21.3851
Triple Number Windward/Leeward Low885.90.6773
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Single Number Predominant Upwind560.41.0706
Single Number Predominant Reaching489.41.2261
Single Number Predominant Downwind525.81.1411
Predominant Upwind - Low795.90.7538
Predominant Upwind - Low/Med597.91.0035
Predominant Upwind - Medium517.21.1600
Predominant Upwind - Med/High477.71.2560
Predominant Upwind - High461.71.2994
Predominant Downwind Low781.40.7678
Predominant Downwind Low/Med573.21.0467
Predominant Downwind Medium483.31.2416
Predominant Downwind Med/High430.41.3940
Predominant Downwind High400.51.4983
Predominant Reaching Low694.90.8634
Predominant Reaching Low/Med524.61.1436
Predominant Reaching Medium454.01.3217
Predominant Reaching Med/High415.31.4448
Predominant Reaching High393.21.5259
SA/DSPL Upwind21.12SA/DSPL Downwind37.59
Scoring OptionTODTOT
5-Band Windward/Leeward Low992.50.6045
5-Band Windward/Leeward Low/Med720.60.8326
5-Band Windward/Leeward Medium603.30.9946
5-Band Windward/Leeward Med/High539.51.1122
5-Band Windward/Leeward High512.31.1713
Windward/Leeward 60-40 Low1001.20.5993
Windward/Leeward 60-40 Low/Med730.50.8213
Windward/Leeward 60-40 Medium615.30.9751
Windward/Leeward 60-40 Med/High554.91.0814
Windward/Leeward 60-40 High530.81.1303
5-Band AP Low716.00.8380
5-Band AP Low/Med562.51.0666
5-Band AP Medium482.71.2429
5-Band AP Med/High439.21.3662
5-Band AP High418.21.4346
5-Band SF Bay Tour - Low854.60.7021
5-Band SF Bay Tour - Low/Med688.10.8720
5-Band SF Bay Tour - Medium580.01.0344
5-Band SF Bay Tour - Med/High522.41.1485
5-Band SF Bay Tour - High497.71.2056
Chicago-Mac Upwind1.0330
Chicago-Mac All Purpose1.0687
Chicago-Mac Downwind1.0971
Bayview-Mac Cove Island0.7686
Bayview-Mac Shore0.7741
Harvest Moon Regatta423.11.4182
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance540.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating540.81.1094
FinRating, kevyt tuuli971.21.0296
FinRating, kova tuuli420.41.1893
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.1094
Triple Number Coastal/Long Distance Low0.9218
Triple Number Coastal/Long Distance Medium1.2231
Triple Number Coastal/Long Distance High1.3851
Triple Number Windward/Leeward Low0.7077
Triple Number Windward/Leeward Medium0.9754
Triple Number Windward/Leeward High1.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
For information
General Purpose Handicap (GPH)557.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low650.9
Triple Number Coastal/Long Distance Medium490.6
Triple Number Coastal/Long Distance High433.2
Triple Number Windward/Leeward Low847.8
Triple Number Windward/Leeward Medium615.1
Triple Number Windward/Leeward High531.4
Predominantly Upwind537.3
Predominantly Downwind503.3
Predominantly Reaching479.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9218
Triple Number Coastal/Long Distance Medium1.2231
Triple Number Coastal/Long Distance High1.3851
Triple Number Windward/Leeward Low0.7077
Triple Number Windward/Leeward Medium0.9754
Triple Number Windward/Leeward High1.1291
Coastal/Long Distance1.1094
Predominantly Upwind1.1166
Predominantly Downwind1.1922
For information
General Purpose Handicap (GPH)557.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.2148
Distanseseilas Trippeltall svak vind0.9218
Distanseseilas Trippeltall mellomvind1.2231
Distanseseilas Trippeltall sterk vind1.3851
Pølsebane Trippeltall svak vind0.7077
Pølsebane Trippeltall mellomvind0.9754
Pølsebane Trippeltall sterk vind1.1291
Motvind Singeltall1.1166
Medvind Singeltall1.1922
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Coastal/Long Distance540.81.1094
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind537.31.1166
Predominantly Downwind503.31.1922
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore500.71.1983
Cape Doctor Coastal408.01.4705
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9218
Triple Number Coastal/Long Distance Medium1.2231
Triple Number Coastal/Long Distance High1.3851
Triple Number Windward/Leeward Low0.7077
Triple Number Windward/Leeward Medium0.9754
Triple Number Windward/Leeward High1.1291
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9218
Triple Number Coastal/Long Distance Medium1.2231
Triple Number Coastal/Long Distance High1.3851
Triple Number Windward/Leeward Low0.7077
Triple Number Windward/Leeward Medium0.9754
Triple Number Windward/Leeward High1.1291
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Predominantly Upwind537.31.1166
Predominantly Downwind503.31.1922
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance540.81.1094
Triple Number Coastal/Long Distance Low650.90.9218
Triple Number Coastal/Long Distance Medium490.61.2231
Triple Number Coastal/Long Distance High433.21.3851
Triple Number Windward/Leeward Low847.80.7077
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1411.0937.7706.5582.0507.8469.6441.2396.4382.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low650.90.9218
Triple Number AP Medium490.61.2229
Triple Number AP High433.21.3851
Triple Number Windward/Leeward Low885.90.6773
Triple Number Windward/Leeward Medium615.10.9754
Triple Number Windward/Leeward High531.41.1291
Single Number Predominant Upwind560.41.0706
Single Number Predominant Reaching489.41.2261
Single Number Predominant Downwind525.81.1411
Predominant Upwind - Low795.90.7538
Predominant Upwind - Low/Med597.91.0035
Predominant Upwind - Medium517.21.1600
Predominant Upwind - Med/High477.71.2560
Predominant Upwind - High461.71.2994
Predominant Downwind Low781.40.7678
Predominant Downwind Low/Med573.21.0467
Predominant Downwind Medium483.31.2416
Predominant Downwind Med/High430.41.3940
Predominant Downwind High400.51.4983
Predominant Reaching Low694.90.8634
Predominant Reaching Low/Med524.61.1436
Predominant Reaching Medium454.01.3217
Predominant Reaching Med/High415.31.4448
Predominant Reaching High393.21.5259
SA/DSPL Upwind21.12SA/DSPL Downwind37.59
Scoring OptionTODTOT
5-Band Windward/Leeward Low992.50.6045
5-Band Windward/Leeward Low/Med720.60.8326
5-Band Windward/Leeward Medium603.30.9946
5-Band Windward/Leeward Med/High539.51.1122
5-Band Windward/Leeward High512.31.1713
Windward/Leeward 60-40 Low1001.20.5993
Windward/Leeward 60-40 Low/Med730.50.8213
Windward/Leeward 60-40 Medium615.30.9751
Windward/Leeward 60-40 Med/High554.91.0814
Windward/Leeward 60-40 High530.81.1303
5-Band AP Low716.00.8380
5-Band AP Low/Med562.51.0666
5-Band AP Medium482.71.2429
5-Band AP Med/High439.21.3662
5-Band AP High418.21.4346
5-Band SF Bay Tour - Low854.60.7021
5-Band SF Bay Tour - Low/Med688.10.8720
5-Band SF Bay Tour - Medium580.01.0344
5-Band SF Bay Tour - Med/High522.41.1485
5-Band SF Bay Tour - High497.71.2056
Chicago-Mac Upwind1.0330
Chicago-Mac All Purpose1.0687
Chicago-Mac Downwind1.0971
Bayview-Mac Cove Island0.7686
Bayview-Mac Shore0.7741
Harvest Moon Regatta423.11.4182
Club Certificate2025
OSTROESP-11327_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 530MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA15.500Max. Beam4.908Draft2.059Displacement17,473Wetted area53.55IMS L13.976LSM014.036Acc. length15.117Sink (kg/mm) 41.81
VCGD0.186VCGM0.143RM Rated (kg·m) 622.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight1,116Declared crew weight600
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0006
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerIn mastArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P19.320IG19.500ISP20.000MDT10.100MDL10.110MDT2MDL2TLMWGO
E6.000J5.710BAS2.000FSD0.100SFJ0.500SPLWPLTPS7.000BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date01/01/2010
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
OSTROESP-11327_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment171.15
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment17.00NoNo 72.40
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment119.76NaN184.42
CRUISER/RACER REQUIREMENTS*
Accommodation length15.1 mTable area0.77 m²Headroom1.90 mMinimum number of berths7Personal gear stowage0.28 m³Fresh water capacity318 lMinimum number of seats in cockpit7Food stowage0.42 m³Fuel capacity152 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.