Club Certificate2026
SlipfreeFIN11819
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
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 Angles47.0°44.1°42.1°40.5°39.0°38.2°37.8°38.0°38.9°
Beat VMG2.263.243.954.484.855.035.115.145.07
52°3.574.985.926.536.897.087.177.237.23
60°3.865.266.186.737.057.257.367.447.46
75°4.075.446.366.887.207.427.597.797.89
90°3.945.346.306.947.297.487.718.098.34
110°3.765.306.427.067.457.778.058.448.73
120°3.625.136.256.977.397.758.108.769.20
135°3.174.615.746.627.157.537.898.679.54
150°2.633.915.025.976.717.197.548.239.02
Run VMG2.273.394.355.185.926.516.977.648.28
Gybe Angles142.4°146.0°150.2°152.8°158.3°165.1°172.3°177.7°176.8°
APH ToD:580.1CDL: 8.805APH ToT: 1.0342CertNo:
BOAT
ClassDufour 34DesignerUmberto FelciBuilderDufour YachtAge dateSeries date07/2002Offset fileDUF34PERF.offData fileFIN11819
HULL
Length Overall10.280 mMaximum Beam3.482 mDraft1.941 mDisplacement5,500 kgDLR6.7814IMS DivisionCruiser/RacerDynamic Allowance0.310%Age Allowance0.650%RS Assessment-0.025%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.400m
CREW
Maximum weight600 kg(declared)Minimum weight470 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail31.6132.37Headsail Luffed32.7732.77Headsail FlyingSymmetric77.4677.46Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail9.31Storm Jib8.76Heavy Weather Jib23.63
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 122.4 kg·m Stability Index 116.9
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  04140004URB Issued on 06/07/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SlipfreeFIN11819
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
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 VMG1592.81112.8911.6803.9742.0715.2704.0699.9710.2
52°1007.4722.9608.5551.3522.6508.5502.4497.8498.0
60°932.8684.0582.6534.8510.5496.7489.4483.8482.3
75°885.5661.2565.9522.9500.1485.0474.0462.0456.1
90°913.7674.6571.2518.7493.8481.3467.1444.9431.9
110°956.5678.9561.0509.7483.4463.5447.0426.4412.5
120°993.6702.2576.4516.8487.0464.8444.6410.9391.2
135°1137.3780.9627.2544.2503.3478.2456.3415.4377.3
150°1370.5920.5716.9603.1536.2500.9477.7437.2399.1
Run VMG1582.51062.9827.6694.7608.4553.0516.6471.3434.6
Selected Courses
Windward / Leeward1587.71087.8869.6749.3675.2634.1610.3585.6572.4
All purpose1194.7836.7682.7602.2556.8531.6515.2494.3481.1
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward710.90.8440
All purpose580.11.0342
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7382
Downwind "popa"0.8871
70% up, 30% down "Ilhabela"0.7774
30% up, 70% down "Ilhabela-inverso"0.8365
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Predominantly Upwind627.00.9569
Predominantly Downwind591.21.0149
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP604.60.9925 Predom. Rc High469.91.2769 5B SF Bay L/M792.00.7576 TriNum AP Low759.70.7898 Predom. Dn Low930.70.6447 5B SF Bay Med668.80.8972 TriNum AP Med576.21.0413 Predom. Dn L/M674.30.8899 5B SF Bay M/H602.20.9963 TriNum AP High511.51.1731 Predom. Dn Med568.01.0564 5B SF Bay High576.81.0402 TriNum W/L Low1027.60.5839 Predom. Dn M/H505.01.1880 5B AP Low848.10.7075 TriNum W/L Med705.80.8501 Predom. Dn High470.71.2747 5B AP L/M658.40.9113 TriNum W/L Hig607.00.9885 ChiMac Up Low806.90.7436 5B AP Med567.21.0579 Predom. Upwind655.30.9156 ChiMac Up Med721.80.8313 5B AP M/H517.91.1584 Predom. Reaching581.91.0310 ChiMac Up High624.30.9611 5B AP High495.61.2106 Predom. Downwind620.30.9672 ChiMac Off Low792.60.7570 5B W/L Low1158.20.5180 Predom. Up Low927.10.6472 ChiMac Off Med694.50.8639 5B W/L L/M830.60.7223 Predom. Up L/M694.80.8635 ChiMac Off High579.61.0353 5B W/L Med691.50.8677 Predom. Up Med604.50.9926 ChiMac AP Low795.90.7539 5B W/L M/H615.60.9747 Predom. Up M/H560.41.0706 ChiMac AP Med705.40.8506 5B W/L High587.61.0212 Predom. Up High544.81.1013 ChiMac AP High600.30.9996 W/L 60-40 Low1163.10.5159 Predom. Rc Low825.20.7271 BayMac Cove Island919.10.6528 W/L 60-40 L/M840.20.7141 Predom. Rc L/M619.70.9683 BayMac Shore911.40.6583 W/L 60-40 Med705.00.8511 Predom. Rc Med539.61.1120 Harvest Moon511.71.1726 W/L 60-40 M/H634.10.9462 Predom. Rc M/H495.11.2119 5B SF Bay Low971.90.6174 W/L 60-40 High610.50.9828      SA/DSPL Up20.55SA/DSPL Dn34.81
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance631.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating631.40.9503
FinRating, kevyt tuuli1142.00.8757
FinRating, kova tuuli498.91.0021
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9503
Triple Number Coastal/Long Distance Low0.7898
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1731
Triple Number Windward/Leeward Low0.6130
Triple Number Windward/Leeward Medium0.8501
Triple Number Windward/Leeward High0.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
For information
General Purpose Handicap (GPH)654.1
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Saronikos S All Purpose666.50.9002
Saronikos S Upwind750.30.7997
Saronikos S Downwind569.21.0541
Saronikos N All Purpose699.60.8577
Saronikos N Upwind784.60.7647
Saronikos N Downwind623.60.9622
Saronikos SW All Purpose676.70.8867
Saronikos SW Upwind776.10.7731
Saronikos SW Downwind580.21.0342
Saronikos NE All Purpose729.90.8221
Saronikos NE Upwind737.10.8140
Saronikos NE Downwind706.50.8493
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose604.60.9925
5-Band All Purpose Low924.40.6491
5-Band All Purpose L/M682.50.8791
5-Band All Purpose Med585.21.0253
5-Band All Purpose M/H532.11.1276
5-Band All Purpose High507.21.1829
Single Number Predominant Upwind625.80.9588
Single Number Predominant Reaching557.91.0755
Single Number Predominant Downwind591.71.0140
5-Band 50-50 Windward/Leeward Low1158.20.5180
5-Band 50-50 Windward/Leeward L/M830.60.7223
5-Band 50-50 Windward/Leeward Med691.50.8677
5-Band 50-50 Windward/Leeward M/H615.60.9747
5-Band 50-50 Windward/Leeward High587.61.0212
5-Band 60-40 Windward/Leeward Low1163.10.5159
5-Band 60-40 Windward/Leeward L/M840.20.7141
5-Band 60-40 Windward/Leeward Med705.00.8511
5-Band 60-40 Windward/Leeward M/H634.10.9462
5-Band 60-40 Windward/Leeward High610.50.9828
Triple Number 50-50 Windward/Leeward Low1027.60.5839
Triple Number 50-50 Windward/Leeward Med705.90.8499
Triple Number 50-50 Windward/Leeward High607.00.9885
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward724.50.8282
Triple Number 60-40 Windward/Leeward Low1034.00.5803
Triple Number 60-40 Windward/Leeward Med718.80.8347
Triple Number 60-40 Windward/Leeward High626.60.9575
Triple Number All-Purpose Low827.00.7255
Triple Number All-Purpose Med594.81.0087
Triple Number All-Purpose High525.01.1429
Triple Number Predominant Upwind Low840.80.7136
Triple Number Predominant Upwind Med616.40.9734
Triple Number Predominant Upwind High560.51.0705
Triple Number Predominant Reaching Low746.60.8036
Triple Number Predominant Reaching Med556.01.0792
Triple Number Predominant Reaching High479.91.2501
Triple Number Predominant Downwind Low826.80.7257
Triple Number Predominant Downwind Med579.41.0356
Triple Number Predominant Downwind High486.71.2329
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low759.7
Triple Number Coastal/Long Distance Medium576.1
Triple Number Coastal/Long Distance High511.5
Triple Number Windward/Leeward Low978.8
Triple Number Windward/Leeward Medium705.8
Triple Number Windward/Leeward High607.0
Predominantly Upwind627.0
Predominantly Downwind591.2
Predominantly Reaching567.4
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7898
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1731
Triple Number Windward/Leeward Low0.6130
Triple Number Windward/Leeward Medium0.8501
Triple Number Windward/Leeward High0.9885
Coastal/Long Distance0.9503
Predominantly Upwind0.9569
Predominantly Downwind1.0149
For information
General Purpose Handicap (GPH)654.1
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0342
Distanseseilas Trippeltall svak vind0.7898
Distanseseilas Trippeltall mellomvind1.0414
Distanseseilas Trippeltall sterk vind1.1731
Pølsebane Trippeltall svak vind0.6130
Pølsebane Trippeltall mellomvind0.8501
Pølsebane Trippeltall sterk vind0.9885
Motvind Singeltall0.9569
Medvind Singeltall1.0149
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Coastal/Long Distance631.40.9503
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind627.00.9569
Predominantly Downwind591.21.0149
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore576.31.0411
Cape Doctor Coastal485.11.2370
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7898
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1731
Triple Number Windward/Leeward Low0.6130
Triple Number Windward/Leeward Medium0.8501
Triple Number Windward/Leeward High0.9885
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7898
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1731
Triple Number Windward/Leeward Low0.6130
Triple Number Windward/Leeward Medium0.8501
Triple Number Windward/Leeward High0.9885
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Predominantly Upwind627.00.9569
Predominantly Downwind591.21.0149
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance631.40.9503
Triple Number Coastal/Long Distance Low759.70.7898
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High511.51.1731
Triple Number Windward/Leeward Low978.80.6130
Triple Number Windward/Leeward Medium705.80.8501
Triple Number Windward/Leeward High607.00.9885
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1587.11085.3818.0676.8593.3551.5521.0473.5459.1
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP604.60.9925 Predom. Dn High470.71.2747 5B AP M/H517.91.1584 TriNum AP Low759.70.7898 Predom. Rc Low825.20.7271 5B AP High495.61.2106 TriNum AP Med576.21.0413 Predom. Rc L/M619.70.9683 5B SF Bay Low971.90.6174 TriNum AP High511.51.1731 Predom. Rc Med539.61.1120 5B SF Bay L/M792.00.7576 TriNum W/L Low1027.60.5839 Predom. Rc M/H495.11.2119 5B SF Bay Med668.80.8972 TriNum W/L Med705.80.8501 Predom. Rc High469.91.2769 5B SF Bay M/H602.20.9963 TriNum W/L Hig607.00.9885 5B W/L Low1158.20.5180 5B SF Bay High576.81.0402 Predom. Upwind655.30.9156 5B W/L L/M830.60.7223 ChiMac Up Low806.90.7436 Predom. Reaching581.91.0310 5B W/L Med691.50.8677 ChiMac Up Med721.80.8313 Predom. Downwind620.30.9672 5B W/L M/H615.60.9747 ChiMac Up High624.30.9611 Predom. Up Low927.10.6472 5B W/L High587.61.0212 ChiMac Off Low792.60.7570 Predom. Up L/M694.80.8635 W/L 60-40 Low1163.10.5159 ChiMac Off Med694.50.8639 Predom. Up Med604.50.9926 W/L 60-40 L/M840.20.7141 ChiMac Off High579.61.0353 Predom. Up M/H560.41.0706 W/L 60-40 Med705.00.8511 ChiMac AP Low795.90.7539 Predom. Up High544.81.1013 W/L 60-40 M/H634.10.9462 ChiMac AP Med705.40.8506 Predom. Dn Low930.70.6447 W/L 60-40 High610.50.9828 ChiMac AP High600.30.9996 Predom. Dn L/M674.30.8899 5B AP Low848.10.7075 BayMac Cove Island919.10.6528 Predom. Dn Med568.01.0564 5B AP L/M658.40.9113 BayMac Shore911.40.6583 Predom. Dn M/H505.01.1880 5B AP Med567.21.0579 Harvest Moon511.71.1726      SA/DSPL Up20.55SA/DSPL Dn34.81
ORC Ref  04140004URB Issued on 06/07/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SlipfreeFIN11819
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDufour 34MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall10.280Maximum beam3.482Draft1.941Displacement5,500Wetted area24.09IMS L9.510LSM09.325Accomod. length10.300Sink (kg/mm) 18.61
VCGD0.030VCGM0.046 RM Rated (kg·m) 122.4Limit of positive stability(°) 115.7 Stability Index 116.9 BLR index 0.0000Default crew weight623 Declared crew weight 600
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0041
EDL2.000ST10.065ST20.180
ST30.180ST40.110ST50.350
RIG
BackstayFixedForestayFixedInner forestayFixedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P11.820IG13.230ISP13.180MDT10.125MDL10.198MDT2MDL2TLMWGO
E4.500J3.740BAS1.430FSDSFJSPL3.750WPLTPS3.740BDMWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date26/02/2020
SFFP0.390FFMFF1.297LCFcl5.779SG
SAFP9.636FAMFA1.027LCFsh6.027HBI1.121
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004URB Issued on 06/07/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SlipfreeFIN11819
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20.200.981.732.863.7531.6115/06/2022
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20.081.272.585.2612.47NoNo 32.7730.070.611.182.433.795.2312.58NoNo 31.7115/06/2022
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS113.0013.0013.007.256.7577.4629/06/2026112.9512.9512.956.5571.12
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length10.3 mTable area0.44 m²Headroom1.72 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity86 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity56 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004URB Issued on 06/07/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org