Club Certificate2026
OSTROITA-STR25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
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 Angles51.5°48.2°46.6°45.2°43.9°41.2°40.4°40.0°40.5°
Beat VMG2.343.414.234.845.225.525.796.006.00
52°3.805.476.677.517.978.198.428.708.76
60°4.326.027.187.958.388.588.698.999.10
75°4.866.537.668.368.779.039.199.409.64
90°4.976.647.788.498.939.279.579.9810.22
110°4.546.247.458.278.799.239.6310.3911.04
120°4.145.817.048.048.689.139.5410.3911.32
135°3.455.086.397.458.258.799.2110.0410.95
150°2.854.265.496.537.398.038.479.139.75
Run VMG2.473.694.755.666.406.957.338.349.05
Gybe Angles139.9°142.8°146.5°147.6°147.6°147.9°149.8°175.2°178.3°
APH ToD:512.6CDL: 11.679APH ToT: 1.1704CertNo:26/3
BOAT
ClassDufour 530DesignerFelciBuilderDufour YachtsAge date02/2024Series date01/2023Offset fileDufour525.offData fileSTR25
HULL
Length Overall14.967 mMaximum Beam4.908 mDraft2.064 mDisplacement17,675 kgDLR6.3459IMS DivisionCruiser/RacerDynamic Allowance0.420%Age Allowance0.098%RS Assessment-0.152%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.400m
CREW
Maximum weight530 kg(declared)Minimum weight400 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail62.2162.62Headsail Luffed44.1344.13Headsail Flying124.45124.45SymmetricAsymmetric
STORM SAIL AREAS Maximum (m²)
Trysail20.29Storm Jib19.02Heavy Weather Jib51.34
SAIL LIMITS
Headsails7
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers0
✱ No spinnaker pole aboard
STABILITY
Righting Moment 683.0 kg·m Stability Index 127.2
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  03190004K65 Issued on 02/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
OSTROITA-STR25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
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 VMG1538.11054.8851.8743.8689.6652.1621.4600.0600.2
52°946.4658.1539.8479.3451.9439.6427.4413.9410.8
60°833.5598.5501.3452.6429.6419.5414.2400.4395.8
75°741.1551.1469.8430.6410.6398.8391.7383.1373.5
90°725.1542.4462.6424.0403.3388.3376.3360.8352.4
110°792.7577.4483.3435.2409.4390.2373.9346.6326.1
120°870.6619.4511.1447.9414.8394.4377.3346.4317.9
135°1043.2708.3563.0483.1436.3409.7391.0358.6328.8
150°1261.9844.4655.7551.1487.0448.4425.1394.2369.2
Run VMG1457.1975.0757.2636.3562.3517.8490.9431.5397.9
Selected Courses
Windward / Leeward1497.61014.9804.5690.1625.9584.9556.1515.7499.0
All purpose1087.5754.9611.2534.4492.6466.4447.3421.9407.7
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward655.40.9155
All purpose512.61.1704
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.8056
Downwind "popa"0.9609
70% up, 30% down "Ilhabela"0.8467
30% up, 70% down "Ilhabela-inverso"0.9084
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Predominantly Upwind557.31.0767
Predominantly Downwind526.11.1405
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP534.41.1228 Predom. Rc High396.11.5147 5B SF Bay L/M730.20.8217 TriNum AP Low683.10.8784 Predom. Dn Low842.40.7123 5B SF Bay Med612.80.9792 TriNum AP Med509.91.1766 Predom. Dn L/M603.40.9944 5B SF Bay M/H540.51.1102 TriNum AP High442.51.3558 Predom. Dn Med504.21.1900 5B SF Bay High505.41.1873 TriNum W/L Low957.00.6269 Predom. Dn M/H444.91.3487 5B AP Low756.60.7930 TriNum W/L Med652.00.9203 Predom. Dn High409.91.4637 5B AP L/M587.81.0208 TriNum W/L Hig548.21.0945 ChiMac Up Low733.50.8180 5B AP Med501.21.1970 Predom. Upwind583.41.0285 ChiMac Up Med649.40.9239 5B AP M/H450.11.3332 Predom. Reaching502.71.1935 ChiMac Up High551.51.0879 5B AP High423.81.4156 Predom. Downwind552.51.0859 ChiMac Off Low713.80.8406 5B W/L Low1083.00.5540 Predom. Up Low849.80.7061 ChiMac Off Med622.40.9640 5B W/L L/M768.80.7805 Predom. Up L/M624.40.9609 ChiMac Off High514.81.1655 5B W/L Med638.70.9393 Predom. Up Med536.61.1181 ChiMac AP Low717.30.8365 5B W/L M/H560.01.0714 Predom. Up M/H486.41.2337 ChiMac AP Med631.30.9504 5B W/L High519.81.1542 Predom. Up High463.21.2953 ChiMac AP High530.21.1316 W/L 60-40 Low1091.40.5498 Predom. Rc Low726.90.8255 BayMac Cove Island840.60.7137 W/L 60-40 L/M779.00.7703 Predom. Rc L/M539.41.1124 BayMac Shore831.70.7214 W/L 60-40 Med651.00.9217 Predom. Rc Med464.61.2915 Harvest Moon440.11.3634 W/L 60-40 M/H573.81.0457 Predom. Rc M/H420.41.4271 5B SF Bay Low901.90.6653 W/L 60-40 High536.61.1181      SA/DSPL Up15.52SA/DSPL Dn27.25
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance566.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating566.11.0598
FinRating, kevyt tuuli1059.30.9440
FinRating, kova tuuli426.71.1718
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.0598
Triple Number Coastal/Long Distance Low0.8784
Triple Number Coastal/Long Distance Medium1.1767
Triple Number Coastal/Long Distance High1.3558
Triple Number Windward/Leeward Low0.6596
Triple Number Windward/Leeward Medium0.9203
Triple Number Windward/Leeward High1.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
For information
General Purpose Handicap (GPH)580.4
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Saronikos S All Purpose602.60.9958
Saronikos S Upwind675.30.8885
Saronikos S Downwind508.61.1797
Saronikos N All Purpose622.90.9632
Saronikos N Upwind700.40.8567
Saronikos N Downwind550.81.0893
Saronikos SW All Purpose606.20.9898
Saronikos SW Upwind695.10.8631
Saronikos SW Downwind509.61.1774
Saronikos NE All Purpose642.90.9333
Saronikos NE Upwind642.70.9336
Saronikos NE Downwind620.90.9663
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose534.41.1228
5-Band All Purpose Low838.10.7159
5-Band All Purpose L/M610.00.9836
5-Band All Purpose Med518.11.1581
5-Band All Purpose M/H464.01.2932
5-Band All Purpose High435.31.3784
Single Number Predominant Upwind556.41.0784
Single Number Predominant Reaching481.21.2469
Single Number Predominant Downwind526.41.1398
5-Band 50-50 Windward/Leeward Low1083.00.5540
5-Band 50-50 Windward/Leeward L/M768.80.7805
5-Band 50-50 Windward/Leeward Med638.70.9393
5-Band 50-50 Windward/Leeward M/H560.01.0714
5-Band 50-50 Windward/Leeward High519.81.1542
5-Band 60-40 Windward/Leeward Low1091.40.5498
5-Band 60-40 Windward/Leeward L/M779.00.7703
5-Band 60-40 Windward/Leeward Med651.00.9217
5-Band 60-40 Windward/Leeward M/H573.81.0457
5-Band 60-40 Windward/Leeward High536.61.1181
Triple Number 50-50 Windward/Leeward Low957.00.6269
Triple Number 50-50 Windward/Leeward Med652.00.9202
Triple Number 50-50 Windward/Leeward High548.21.0945
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward667.50.8989
Triple Number 60-40 Windward/Leeward Low965.80.6212
Triple Number 60-40 Windward/Leeward Med664.00.9036
Triple Number 60-40 Windward/Leeward High562.71.0662
Triple Number All-Purpose Low746.20.8041
Triple Number All-Purpose Med527.31.1378
Triple Number All-Purpose High455.81.3165
Triple Number Predominant Upwind Low764.50.7848
Triple Number Predominant Upwind Med548.41.0941
Triple Number Predominant Upwind High482.41.2439
Triple Number Predominant Reaching Low657.10.9131
Triple Number Predominant Reaching Med481.91.2452
Triple Number Predominant Reaching High404.11.4848
Triple Number Predominant Downwind Low745.70.8046
Triple Number Predominant Downwind Med515.31.1645
Triple Number Predominant Downwind High428.21.4011
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low683.1
Triple Number Coastal/Long Distance Medium509.9
Triple Number Coastal/Long Distance High442.5
Triple Number Windward/Leeward Low909.6
Triple Number Windward/Leeward Medium652.0
Triple Number Windward/Leeward High548.2
Predominantly Upwind557.3
Predominantly Downwind526.1
Predominantly Reaching493.8
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8784
Triple Number Coastal/Long Distance Medium1.1767
Triple Number Coastal/Long Distance High1.3558
Triple Number Windward/Leeward Low0.6596
Triple Number Windward/Leeward Medium0.9203
Triple Number Windward/Leeward High1.0945
Coastal/Long Distance1.0598
Predominantly Upwind1.0767
Predominantly Downwind1.1405
For information
General Purpose Handicap (GPH)580.4
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.1704
Distanseseilas Trippeltall svak vind0.8784
Distanseseilas Trippeltall mellomvind1.1767
Distanseseilas Trippeltall sterk vind1.3558
Pølsebane Trippeltall svak vind0.6596
Pølsebane Trippeltall mellomvind0.9203
Pølsebane Trippeltall sterk vind1.0945
Motvind Singeltall1.0767
Medvind Singeltall1.1405
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Coastal/Long Distance566.11.0598
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind557.31.0767
Predominantly Downwind526.11.1405
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore504.01.1904
Cape Doctor Coastal412.01.4564
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8784
Triple Number Coastal/Long Distance Medium1.1767
Triple Number Coastal/Long Distance High1.3558
Triple Number Windward/Leeward Low0.6596
Triple Number Windward/Leeward Medium0.9203
Triple Number Windward/Leeward High1.0945
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8784
Triple Number Coastal/Long Distance Medium1.1767
Triple Number Coastal/Long Distance High1.3558
Triple Number Windward/Leeward Low0.6596
Triple Number Windward/Leeward Medium0.9203
Triple Number Windward/Leeward High1.0945
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Predominantly Upwind557.31.0767
Predominantly Downwind526.11.1405
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance566.11.0598
Triple Number Coastal/Long Distance Low683.10.8784
Triple Number Coastal/Long Distance Medium509.91.1767
Triple Number Coastal/Long Distance High442.51.3558
Triple Number Windward/Leeward Low909.60.6596
Triple Number Windward/Leeward Medium652.00.9203
Triple Number Windward/Leeward High548.21.0945
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.51010.9750.1612.3531.3486.0451.9401.4385.6
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP534.41.1228 Predom. Dn High409.91.4637 5B AP M/H450.11.3332 TriNum AP Low683.10.8784 Predom. Rc Low726.90.8255 5B AP High423.81.4156 TriNum AP Med509.91.1766 Predom. Rc L/M539.41.1124 5B SF Bay Low901.90.6653 TriNum AP High442.51.3558 Predom. Rc Med464.61.2915 5B SF Bay L/M730.20.8217 TriNum W/L Low957.00.6269 Predom. Rc M/H420.41.4271 5B SF Bay Med612.80.9792 TriNum W/L Med652.00.9203 Predom. Rc High396.11.5147 5B SF Bay M/H540.51.1102 TriNum W/L Hig548.21.0945 5B W/L Low1083.00.5540 5B SF Bay High505.41.1873 Predom. Upwind583.41.0285 5B W/L L/M768.80.7805 ChiMac Up Low733.50.8180 Predom. Reaching502.71.1935 5B W/L Med638.70.9393 ChiMac Up Med649.40.9239 Predom. Downwind552.51.0859 5B W/L M/H560.01.0714 ChiMac Up High551.51.0879 Predom. Up Low849.80.7061 5B W/L High519.81.1542 ChiMac Off Low713.80.8406 Predom. Up L/M624.40.9609 W/L 60-40 Low1091.40.5498 ChiMac Off Med622.40.9640 Predom. Up Med536.61.1181 W/L 60-40 L/M779.00.7703 ChiMac Off High514.81.1655 Predom. Up M/H486.41.2337 W/L 60-40 Med651.00.9217 ChiMac AP Low717.30.8365 Predom. Up High463.21.2953 W/L 60-40 M/H573.81.0457 ChiMac AP Med631.30.9504 Predom. Dn Low842.40.7123 W/L 60-40 High536.61.1181 ChiMac AP High530.21.1316 Predom. Dn L/M603.40.9944 5B AP Low756.60.7930 BayMac Cove Island840.60.7137 Predom. Dn Med504.21.1900 5B AP L/M587.81.0208 BayMac Shore831.70.7214 Predom. Dn M/H444.91.3487 5B AP Med501.21.1970 Harvest Moon440.11.3634      SA/DSPL Up15.52SA/DSPL Dn27.25
ORC Ref  03190004K65 Issued on 02/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
OSTROITA-STR25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDufour 530MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall14.967Maximum beam4.908Draft2.064Displacement17,675Wetted area53.75IMS L13.979LSM014.069Accomod. length14.967Sink (kg/mm) 41.94
VCGD0.000VCGM-0.047 RM Rated (kg·m) 683.0Limit of positive stability(°) 119.1 Stability Index 127.2 BLR index 0.0000Default crew weight1,120 Declared crew weight 530
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0006
EDLST1ST2
ST3ST4ST5
RIG
BackstayFixedForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerIn mastArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P19.320IG19.500ISP20.000MDT10.100MDL10.110MDT2MDL2TLTaperMWGO
E6.000J5.750BAS2.000FSD0.100SFJ0.500SPLWPLTPS7.000BDMWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.000Flotation Date19/03/2026
SFFP1.201FFM1.749FF1.749LCFcl8.401SG1.0250
SAFP14.149FAM1.304FA1.304LCFsh8.751HBI1.491
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03190004K65 Issued on 02/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
OSTROITA-STR25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.050.911.753.344.7662.2118/03/2026
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentB0.542.053.566.588.6410.7120.65NoYes0124.45A0.070.511.022.163.454.8319.35NoNo 44.1331/03/2026
NON MANUAL POWER CONTROLS (NMP)
SheetsYesMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsYes
CRUISER/RACER REQUIREMENTS*
Accommodation length15.0 mTable area0.77 m²Headroom1.90 mMinimum number of berths7Personal gear stowage0.28 m³Fresh water capacity315 lMinimum number of seats in cockpit7Food stowage0.42 m³Fuel capacity150 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  03190004K65 Issued on 02/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org