Club Certificate2026
Ilona TuulikkiFIN-6313
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 Angles45.8°42.7°40.8°39.7°38.9°38.7°38.9°39.3°40.2°
Beat VMG2.183.043.624.024.244.344.394.384.34
52°3.414.585.335.796.046.166.216.246.24
60°3.654.805.535.966.206.326.386.436.46
75°3.794.935.666.106.346.516.626.776.84
90°3.684.835.616.136.386.596.767.067.27
110°3.514.835.746.276.586.837.057.327.43
120°3.384.675.626.216.576.867.167.607.81
135°2.984.265.235.966.406.717.047.648.11
150°2.513.694.665.476.066.446.737.357.89
Run VMG2.173.204.054.775.405.906.286.837.39
Gybe Angles143.5°148.0°152.1°155.2°162.1°167.3°176.3°177.7°177.7°
APH ToD:651.2CDL: 6.706APH ToT: 0.9213CertNo:
BOAT
ClassIW 31DesignerSparkman&StephensBuilderIW VarvetAge date01/1975Series date01/1975Offset fileIW31.OFFData fileL-6313
HULL
Length Overall9.300Maximum Beam2.684Draft1.685Displacement3,745DLR11.5040IMS DivisionCruiser/RacerDynamic Allowance0.570%Age Allowance0.650%RS Assessment-0.127%
PROPELLER
InstallationShaft exposedTypeFolding 3 bladesDiameter0.350m
CREW
Maximum weight350(declared)Minimum weight220 ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail17.4617.83Headsail Luffed28.8728.87Headsail FlyingSymmetric59.5659.56Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail5.01Storm Jib6.76Heavy Weather Jib18.25
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 53.5 Stability Index 126.1
COMMENTS
HULL #243
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  04140004IKR Issued on 22/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
Ilona TuulikkiFIN-6313
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 VMG1653.81185.9994.7896.0848.5830.4821.0821.0829.7
52°1056.2785.9675.7621.8595.9584.8579.8576.7576.6
60°987.6750.5651.3604.2581.1569.5564.2559.7557.7
75°948.8730.7635.6590.6567.4553.4543.7532.1526.1
90°979.5745.9641.2587.4564.1546.6532.6509.9495.3
110°1024.7744.9627.1573.9547.0527.3510.3491.6484.8
120°1064.9770.3640.6579.3548.3524.7502.8473.8461.0
135°1206.2844.5688.8604.4562.8536.2511.7471.4443.9
150°1433.7974.9771.9658.5593.8559.1534.6489.6456.2
Run VMG1655.51125.8889.5754.9667.2610.5573.7526.9486.9
Selected Courses
Windward / Leeward1654.61155.8942.1825.5757.8720.5697.3674.0658.3
All purpose1257.0901.7749.9670.7628.7605.2589.0569.0557.4
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward792.00.7576
All purpose651.20.9213
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6565
Downwind "popa"0.8158
70% up, 30% down "Ilhabela"0.6973
30% up, 70% down "Ilhabela-inverso"0.7604
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Predominantly Upwind705.90.8500
Predominantly Downwind656.50.9140
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP677.20.8859 Predom. Rc High538.91.1135 5B SF Bay L/M866.40.6926 TriNum AP Low825.80.7266 Predom. Dn Low996.30.6022 5B SF Bay Med750.30.7996 TriNum AP Med647.00.9274 Predom. Dn L/M739.60.8112 5B SF Bay M/H689.00.8708 TriNum AP High585.61.0246 Predom. Dn Med633.60.9469 5B SF Bay High665.00.9023 TriNum W/L Low1097.90.5465 Predom. Dn M/H570.11.0524 5B AP Low913.60.6567 TriNum W/L Med786.40.7630 Predom. Dn High536.01.1194 5B AP L/M726.40.8259 TriNum W/L Hig694.40.8641 ChiMac Up Low878.50.6830 5B AP Med638.50.9396 Predom. Upwind733.50.8180 ChiMac Up Med797.30.7525 5B AP M/H591.71.0140 Predom. Reaching650.30.9227 ChiMac Up High704.50.8517 5B AP High570.51.0517 Predom. Downwind685.90.8748 ChiMac Off Low858.30.6991 5B W/L Low1227.10.4890 Predom. Up Low993.60.6038 ChiMac Off Med760.10.7894 5B W/L L/M905.30.6628 Predom. Up L/M768.50.7807 ChiMac Off High645.00.9303 5B W/L Med773.20.7760 Predom. Up Med684.30.8768 ChiMac AP Low864.70.6939 5B W/L M/H702.40.8542 Predom. Up M/H644.60.9308 ChiMac AP Med776.10.7731 5B W/L High675.30.8885 Predom. Up High630.50.9516 ChiMac AP High673.10.8914 W/L 60-40 Low1232.70.4867 Predom. Rc Low891.60.6730 BayMac Cove Island989.40.6065 W/L 60-40 L/M917.50.6539 Predom. Rc L/M687.60.8726 BayMac Shore981.70.6112 W/L 60-40 Med791.20.7583 Predom. Rc Med608.50.9860 Harvest Moon575.81.0420 W/L 60-40 M/H726.90.8254 Predom. Rc M/H563.61.0645 5B SF Bay Low1041.20.5762 W/L 60-40 High704.70.8514      SA/DSPL Up19.13SA/DSPL Dn31.80
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance705.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating705.80.8502
FinRating, kevyt tuuli1209.90.8265
FinRating, kova tuuli574.30.8707
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8502
Triple Number Coastal/Long Distance Low0.7266
Triple Number Coastal/Long Distance Medium0.9275
Triple Number Coastal/Long Distance High1.0246
Triple Number Windward/Leeward Low0.5720
Triple Number Windward/Leeward Medium0.7630
Triple Number Windward/Leeward High0.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
For information
General Purpose Handicap (GPH)728.2
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Saronikos S All Purpose739.80.8111
Saronikos S Upwind831.60.7215
Saronikos S Downwind629.20.9536
Saronikos N All Purpose776.10.7731
Saronikos N Upwind866.40.6925
Saronikos N Downwind685.20.8756
Saronikos SW All Purpose746.50.8038
Saronikos SW Upwind851.70.7045
Saronikos SW Downwind642.10.9345
Saronikos NE All Purpose803.80.7465
Saronikos NE Upwind814.00.7371
Saronikos NE Downwind771.00.7782
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose677.20.8859
5-Band All Purpose Low990.80.6055
5-Band All Purpose L/M752.30.7976
5-Band All Purpose Med658.00.9118
5-Band All Purpose M/H606.70.9890
5-Band All Purpose High582.51.0300
Single Number Predominant Upwind704.40.8517
Single Number Predominant Reaching626.60.9575
Single Number Predominant Downwind657.30.9128
5-Band 50-50 Windward/Leeward Low1227.10.4890
5-Band 50-50 Windward/Leeward L/M905.30.6628
5-Band 50-50 Windward/Leeward Med773.20.7760
5-Band 50-50 Windward/Leeward M/H702.40.8542
5-Band 50-50 Windward/Leeward High675.30.8885
5-Band 60-40 Windward/Leeward Low1232.70.4867
5-Band 60-40 Windward/Leeward L/M917.50.6539
5-Band 60-40 Windward/Leeward Med791.20.7583
5-Band 60-40 Windward/Leeward M/H726.90.8254
5-Band 60-40 Windward/Leeward High704.70.8514
Triple Number 50-50 Windward/Leeward Low1097.90.5465
Triple Number 50-50 Windward/Leeward Med786.50.7629
Triple Number 50-50 Windward/Leeward High694.40.8641
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward809.90.7408
Triple Number 60-40 Windward/Leeward Low1105.70.5427
Triple Number 60-40 Windward/Leeward Med803.60.7466
Triple Number 60-40 Windward/Leeward High720.20.8332
Triple Number All-Purpose Low894.50.6707
Triple Number All-Purpose Med667.20.8993
Triple Number All-Purpose High599.81.0004
Triple Number Predominant Upwind Low909.70.6596
Triple Number Predominant Upwind Med695.00.8633
Triple Number Predominant Upwind High647.20.9271
Triple Number Predominant Reaching Low813.60.7375
Triple Number Predominant Reaching Med625.60.9590
Triple Number Predominant Reaching High547.21.0964
Triple Number Predominant Downwind Low892.30.6724
Triple Number Predominant Downwind Med644.20.9314
Triple Number Predominant Downwind High549.01.0928
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low825.8
Triple Number Coastal/Long Distance Medium646.9
Triple Number Coastal/Long Distance High585.6
Triple Number Windward/Leeward Low1049.0
Triple Number Windward/Leeward Medium786.4
Triple Number Windward/Leeward High694.4
Predominantly Upwind705.9
Predominantly Downwind656.5
Predominantly Reaching634.6
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7266
Triple Number Coastal/Long Distance Medium0.9275
Triple Number Coastal/Long Distance High1.0246
Triple Number Windward/Leeward Low0.5720
Triple Number Windward/Leeward Medium0.7630
Triple Number Windward/Leeward High0.8641
Coastal/Long Distance0.8502
Predominantly Upwind0.8500
Predominantly Downwind0.9140
For information
General Purpose Handicap (GPH)728.2
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9213
Distanseseilas Trippeltall svak vind0.7266
Distanseseilas Trippeltall mellomvind0.9275
Distanseseilas Trippeltall sterk vind1.0246
Pølsebane Trippeltall svak vind0.5720
Pølsebane Trippeltall mellomvind0.7630
Pølsebane Trippeltall sterk vind0.8641
Motvind Singeltall0.8500
Medvind Singeltall0.9140
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Coastal/Long Distance705.80.8502
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind705.90.8500
Predominantly Downwind656.50.9140
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore663.00.9049
Cape Doctor Coastal560.91.0697
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7266
Triple Number Coastal/Long Distance Medium0.9275
Triple Number Coastal/Long Distance High1.0246
Triple Number Windward/Leeward Low0.5720
Triple Number Windward/Leeward Medium0.7630
Triple Number Windward/Leeward High0.8641
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7266
Triple Number Coastal/Long Distance Medium0.9275
Triple Number Coastal/Long Distance High1.0246
Triple Number Windward/Leeward Low0.5720
Triple Number Windward/Leeward Medium0.7630
Triple Number Windward/Leeward High0.8641
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Predominantly Upwind705.90.8500
Predominantly Downwind656.50.9140
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance705.80.8502
Triple Number Coastal/Long Distance Low825.80.7266
Triple Number Coastal/Long Distance Medium646.90.9275
Triple Number Coastal/Long Distance High585.61.0246
Triple Number Windward/Leeward Low1049.00.5720
Triple Number Windward/Leeward Medium786.40.7630
Triple Number Windward/Leeward High694.40.8641
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1654.71152.8888.9749.5669.5627.6595.1544.1531.0
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP677.20.8859 Predom. Dn High536.01.1194 5B AP M/H591.71.0140 TriNum AP Low825.80.7266 Predom. Rc Low891.60.6730 5B AP High570.51.0517 TriNum AP Med647.00.9274 Predom. Rc L/M687.60.8726 5B SF Bay Low1041.20.5762 TriNum AP High585.61.0246 Predom. Rc Med608.50.9860 5B SF Bay L/M866.40.6926 TriNum W/L Low1097.90.5465 Predom. Rc M/H563.61.0645 5B SF Bay Med750.30.7996 TriNum W/L Med786.40.7630 Predom. Rc High538.91.1135 5B SF Bay M/H689.00.8708 TriNum W/L Hig694.40.8641 5B W/L Low1227.10.4890 5B SF Bay High665.00.9023 Predom. Upwind733.50.8180 5B W/L L/M905.30.6628 ChiMac Up Low878.50.6830 Predom. Reaching650.30.9227 5B W/L Med773.20.7760 ChiMac Up Med797.30.7525 Predom. Downwind685.90.8748 5B W/L M/H702.40.8542 ChiMac Up High704.50.8517 Predom. Up Low993.60.6038 5B W/L High675.30.8885 ChiMac Off Low858.30.6991 Predom. Up L/M768.50.7807 W/L 60-40 Low1232.70.4867 ChiMac Off Med760.10.7894 Predom. Up Med684.30.8768 W/L 60-40 L/M917.50.6539 ChiMac Off High645.00.9303 Predom. Up M/H644.60.9308 W/L 60-40 Med791.20.7583 ChiMac AP Low864.70.6939 Predom. Up High630.50.9516 W/L 60-40 M/H726.90.8254 ChiMac AP Med776.10.7731 Predom. Dn Low996.30.6022 W/L 60-40 High704.70.8514 ChiMac AP High673.10.8914 Predom. Dn L/M739.60.8112 5B AP Low913.60.6567 BayMac Cove Island989.40.6065 Predom. Dn Med633.60.9469 5B AP L/M726.40.8259 BayMac Shore981.70.6112 Predom. Dn M/H570.11.0524 5B AP Med638.50.9396 Harvest Moon575.81.0420      SA/DSPL Up19.13SA/DSPL Dn31.80
ORC Ref  04140004IKR Issued on 22/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
Ilona TuulikkiFIN-6313
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassIW 31MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.300Maximum beam2.684Draft1.685Displacement3,745Wetted area16.97IMS L7.218LSM06.879Accomod. length8.723Sink (kg/mm) 11.53
VCGD-0.226VCGM-0.123 RM Rated (kg·m) 53.5Limit of positive stability(°) 121.9 Stability Index 126.1 BLR index 0.0000Default crew weight404 Declared crew weight 350
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.350PBW0.087PIPA0.0023
PSD0.025PHD0.043PHL0.135
PSA18.0°ESL0.405
ST10.049ST20.064ST30.064
ST40.049ST50.155
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P9.865IG11.548ISP11.564MDT10.115MDL10.183MDT20.115MDL20.183TL0.000MW0.183GO0.206
E2.900J3.495BAS1.288FSD0.000SFJ0.300SPL3.485WPLTPSBD0.112MWT110.00MCG3.360
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date06/06/2006
SFFP0.320FFM0.999FF1.016LCFcl5.181SG1.0050
SAFP9.150FAM0.614FA0.627LCFsh5.344HBI0.786
W140.0W240.0W340.0W440.0
PD1499.6PD2499.4PD3500.7PD4499.5
WD8.815PLM9000.00GSA1.0RSA1.0RM55.6
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004IKR Issued on 22/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
Ilona TuulikkiFIN-6313
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20.130.651.151.932.4817.4619/01/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG1 20200.080.561.232.573.905.2111.20NoNo 28.8705/05/2019G24.8811.21NoNo 27.8405/06/2006G600.070.571.132.323.564.8510.76NoNo 25.5002/01/2022G30.050.390.751.532.353.2311.00NoNo 17.2808/04/2015
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.3711.3711.376.336.1159.5601/06/2015311.3511.3511.356.306.1059.2107/02/2024
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length8.7 mTable area0.33 m²Headroom1.57 mMinimum number of berths3Personal gear stowage0.12 m³Fresh water capacity40 lMinimum number of seats in cockpit3Food stowage0.18 m³Fuel capacity24 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004IKR Issued on 22/03/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org