Club Certificate2026
PimuFIN-10358
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 Angles45.5°42.9°40.8°39.3°38.2°37.7°37.4°37.6°39.3°
Beat VMG2.323.314.024.514.774.894.965.004.95
52°3.635.025.936.476.736.866.937.017.02
60°3.895.286.166.646.907.057.137.247.26
75°4.085.456.326.787.077.287.457.647.74
90°4.135.646.577.037.337.547.697.998.23
110°4.035.596.627.147.567.948.298.789.27
120°3.885.426.487.047.487.918.369.3110.19
135°3.404.865.986.727.187.608.059.1411.12
150°2.814.105.186.106.717.117.478.269.33
Run VMG2.433.554.495.285.896.466.917.638.40
Gybe Angles139.0°143.3°147.8°150.1°160.6°168.2°178.6°178.6°177.7°
APH ToD:579.4CDL: 8.300APH ToT: 1.0355CertNo:
BOAT
ClassRidas 31DesignerDieter BlankBuilderRidas YachtAge date01/2006Series date01/1999Offset filecross-31.offData fileFIN10358
HULL
Length Overall9.350 mMaximum Beam3.098 mDraft1.983 mDisplacement3,700 kgDLR5.7768IMS DivisionCruiser/RacerDynamic Allowance0.210%Age Allowance0.650%RS Assessment-0.178%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameterm
CREW
Maximum weight450 kg(declared)Minimum weight320 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail31.4932.31Headsail Luffed20.1420.14Headsail FlyingSymmetric59.4259.42Asymmetric55.1060.69 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS Maximum (m²)
Trysail8.94Storm Jib6.62Heavy Weather Jib17.86
SAIL LIMITS
Headsails5Spinnakers4
✱ Asymmetric may be tacked on the pole
STABILITY
Righting Moment 74.5 kg·m Stability Index 124.4
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  04140004P6D Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
PimuFIN-10358
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 VMG1550.01087.5896.5798.9754.0736.1726.2719.3728.0
52°991.3717.3607.5556.8534.8525.0519.5513.5513.0
60°924.9682.1584.6542.2521.8510.8504.8497.5495.5
75°883.2660.3569.5531.1509.4494.2483.3471.3465.3
90°871.9637.9547.9512.3491.1477.3468.2450.3437.2
110°893.3644.3544.2504.3476.2453.1434.4410.0388.5
120°926.8663.8555.4511.0481.2455.2430.7386.6353.4
135°1060.3740.8601.6535.7501.7473.8447.4393.8323.6
150°1283.3878.9694.5590.6536.1506.1481.9435.8385.8
Run VMG1481.81014.8802.0682.0611.4556.9520.9472.0428.8
Selected Courses
Windward / Leeward1515.91051.1849.3740.5682.7646.5623.5595.7578.4
All purpose1143.5808.4667.1597.7560.7537.8521.4497.1477.2
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward711.80.8429
All purpose579.41.0355
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7344
Downwind "popa"0.9013
70% up, 30% down "Ilhabela"0.7776
30% up, 70% down "Ilhabela-inverso"0.8438
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Predominantly Upwind629.00.9540
Predominantly Downwind585.61.0246
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP602.60.9956 Predom. Rc High469.11.2790 5B SF Bay L/M778.20.7710 TriNum AP Low737.80.8132 Predom. Dn Low889.20.6748 5B SF Bay Med671.90.8930 TriNum AP Med576.21.0413 Predom. Dn L/M658.80.9108 5B SF Bay M/H612.70.9793 TriNum AP High516.41.1619 Predom. Dn Med566.61.0590 5B SF Bay High583.81.0278 TriNum W/L Low995.90.6025 Predom. Dn M/H506.41.1848 5B AP Low818.10.7334 TriNum W/L Med706.80.8489 Predom. Dn High466.31.2867 5B AP L/M647.70.9263 TriNum W/L Hig618.80.9696 ChiMac Up Low791.80.7577 5B AP Med568.61.0553 Predom. Upwind655.30.9156 ChiMac Up Med715.30.8388 5B AP M/H523.41.1464 Predom. Reaching574.81.0438 ChiMac Up High626.40.9578 5B AP High497.91.2052 Predom. Downwind610.80.9823 ChiMac Off Low766.50.7828 5B W/L Low1116.90.5372 Predom. Up Low901.40.6657 ChiMac Off Med678.60.8842 5B W/L L/M816.00.7353 Predom. Up L/M686.80.8736 ChiMac Off High573.21.0468 5B W/L Med695.10.8632 Predom. Up Med609.70.9842 ChiMac AP Low775.00.7742 5B W/L M/H627.70.9559 Predom. Up M/H571.91.0491 ChiMac AP Med693.90.8646 5B W/L High597.51.0042 Predom. Up High554.51.0821 ChiMac AP High598.01.0034 W/L 60-40 Low1124.60.5335 Predom. Rc Low791.30.7582 BayMac Cove Island892.20.6725 W/L 60-40 L/M826.70.7258 Predom. Rc L/M606.50.9893 BayMac Shore884.80.6781 W/L 60-40 Med709.70.8454 Predom. Rc Med538.61.1139 Harvest Moon508.71.1795 W/L 60-40 M/H647.90.9260 Predom. Rc M/H497.51.2060 5B SF Bay Low941.00.6376 W/L 60-40 High622.40.9640      SA/DSPL Up21.49SA/DSPL Dn37.84
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance630.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating630.30.9519
FinRating, kevyt tuuli1098.60.9103
FinRating, kova tuuli500.20.9997
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9519
Triple Number Coastal/Long Distance Low0.8132
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1619
Triple Number Windward/Leeward Low0.6314
Triple Number Windward/Leeward Medium0.8489
Triple Number Windward/Leeward High0.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
For information
General Purpose Handicap (GPH)648.9
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Saronikos S All Purpose662.10.9062
Saronikos S Upwind746.80.8034
Saronikos S Downwind556.41.0783
Saronikos N All Purpose693.10.8657
Saronikos N Upwind779.00.7702
Saronikos N Downwind605.50.9909
Saronikos SW All Purpose665.00.9023
Saronikos SW Upwind766.40.7829
Saronikos SW Downwind561.11.0694
Saronikos NE All Purpose715.50.8385
Saronikos NE Upwind730.60.8212
Saronikos NE Downwind675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose602.60.9956
5-Band All Purpose Low890.40.6739
5-Band All Purpose L/M670.30.8951
5-Band All Purpose Med586.71.0227
5-Band All Purpose M/H538.41.1144
5-Band All Purpose High510.31.1758
Single Number Predominant Upwind627.70.9558
Single Number Predominant Reaching553.21.0846
Single Number Predominant Downwind586.31.0233
5-Band 50-50 Windward/Leeward Low1116.90.5372
5-Band 50-50 Windward/Leeward L/M816.00.7353
5-Band 50-50 Windward/Leeward Med695.10.8632
5-Band 50-50 Windward/Leeward M/H627.70.9559
5-Band 50-50 Windward/Leeward High597.51.0042
5-Band 60-40 Windward/Leeward Low1124.60.5335
5-Band 60-40 Windward/Leeward L/M826.70.7258
5-Band 60-40 Windward/Leeward Med709.70.8454
5-Band 60-40 Windward/Leeward M/H647.90.9260
5-Band 60-40 Windward/Leeward High622.40.9640
Triple Number 50-50 Windward/Leeward Low995.90.6025
Triple Number 50-50 Windward/Leeward Med706.90.8488
Triple Number 50-50 Windward/Leeward High618.80.9696
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward726.60.8257
Triple Number 60-40 Windward/Leeward Low1004.30.5974
Triple Number 60-40 Windward/Leeward Med720.80.8324
Triple Number 60-40 Windward/Leeward High640.30.9371
Triple Number All-Purpose Low800.50.7495
Triple Number All-Purpose Med594.71.0089
Triple Number All-Purpose High530.81.1304
Triple Number Predominant Upwind Low820.10.7316
Triple Number Predominant Upwind Med619.30.9688
Triple Number Predominant Upwind High573.01.0471
Triple Number Predominant Reaching Low720.30.8330
Triple Number Predominant Reaching Med554.51.0821
Triple Number Predominant Reaching High481.31.2467
Triple Number Predominant Downwind Low795.10.7546
Triple Number Predominant Downwind Med576.01.0416
Triple Number Predominant Downwind High485.81.2350
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low737.8
Triple Number Coastal/Long Distance Medium576.1
Triple Number Coastal/Long Distance High516.4
Triple Number Windward/Leeward Low950.3
Triple Number Windward/Leeward Medium706.8
Triple Number Windward/Leeward High618.8
Predominantly Upwind629.0
Predominantly Downwind585.6
Predominantly Reaching561.6
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8132
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1619
Triple Number Windward/Leeward Low0.6314
Triple Number Windward/Leeward Medium0.8489
Triple Number Windward/Leeward High0.9696
Coastal/Long Distance0.9519
Predominantly Upwind0.9540
Predominantly Downwind1.0246
For information
General Purpose Handicap (GPH)648.9
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0355
Distanseseilas Trippeltall svak vind0.8132
Distanseseilas Trippeltall mellomvind1.0414
Distanseseilas Trippeltall sterk vind1.1619
Pølsebane Trippeltall svak vind0.6314
Pølsebane Trippeltall mellomvind0.8489
Pølsebane Trippeltall sterk vind0.9696
Motvind Singeltall0.9540
Medvind Singeltall1.0246
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Coastal/Long Distance630.30.9519
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind629.00.9540
Predominantly Downwind585.61.0246
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore583.61.0281
Cape Doctor Coastal483.21.2418
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8132
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1619
Triple Number Windward/Leeward Low0.6314
Triple Number Windward/Leeward Medium0.8489
Triple Number Windward/Leeward High0.9696
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8132
Triple Number Coastal/Long Distance Medium1.0414
Triple Number Coastal/Long Distance High1.1619
Triple Number Windward/Leeward Low0.6314
Triple Number Windward/Leeward Medium0.8489
Triple Number Windward/Leeward High0.9696
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Predominantly Upwind629.00.9540
Predominantly Downwind585.61.0246
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance630.30.9519
Triple Number Coastal/Long Distance Low737.80.8132
Triple Number Coastal/Long Distance Medium576.11.0414
Triple Number Coastal/Long Distance High516.41.1619
Triple Number Windward/Leeward Low950.30.6314
Triple Number Windward/Leeward Medium706.80.8489
Triple Number Windward/Leeward High618.80.9696
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1512.51047.5798.5670.0597.9558.3526.9473.8453.9
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP602.60.9956 Predom. Dn High466.31.2867 5B AP M/H523.41.1464 TriNum AP Low737.80.8132 Predom. Rc Low791.30.7582 5B AP High497.91.2052 TriNum AP Med576.21.0413 Predom. Rc L/M606.50.9893 5B SF Bay Low941.00.6376 TriNum AP High516.41.1619 Predom. Rc Med538.61.1139 5B SF Bay L/M778.20.7710 TriNum W/L Low995.90.6025 Predom. Rc M/H497.51.2060 5B SF Bay Med671.90.8930 TriNum W/L Med706.80.8489 Predom. Rc High469.11.2790 5B SF Bay M/H612.70.9793 TriNum W/L Hig618.80.9696 5B W/L Low1116.90.5372 5B SF Bay High583.81.0278 Predom. Upwind655.30.9156 5B W/L L/M816.00.7353 ChiMac Up Low791.80.7577 Predom. Reaching574.81.0438 5B W/L Med695.10.8632 ChiMac Up Med715.30.8388 Predom. Downwind610.80.9823 5B W/L M/H627.70.9559 ChiMac Up High626.40.9578 Predom. Up Low901.40.6657 5B W/L High597.51.0042 ChiMac Off Low766.50.7828 Predom. Up L/M686.80.8736 W/L 60-40 Low1124.60.5335 ChiMac Off Med678.60.8842 Predom. Up Med609.70.9842 W/L 60-40 L/M826.70.7258 ChiMac Off High573.21.0468 Predom. Up M/H571.91.0491 W/L 60-40 Med709.70.8454 ChiMac AP Low775.00.7742 Predom. Up High554.51.0821 W/L 60-40 M/H647.90.9260 ChiMac AP Med693.90.8646 Predom. Dn Low889.20.6748 W/L 60-40 High622.40.9640 ChiMac AP High598.01.0034 Predom. Dn L/M658.80.9108 5B AP Low818.10.7334 BayMac Cove Island892.20.6725 Predom. Dn Med566.61.0590 5B AP L/M647.70.9263 BayMac Shore884.80.6781 Predom. Dn M/H506.41.1848 5B AP Med568.61.0553 Harvest Moon508.71.1795      SA/DSPL Up21.49SA/DSPL Dn37.84
ORC Ref  04140004P6D Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
PimuFIN-10358
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassRidas 31MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.350Maximum beam3.098Draft1.983Displacement3,700Wetted area19.20IMS L8.757LSM08.619Accomod. length9.350Sink (kg/mm) 14.35
VCGD-0.018VCGM-0.106 RM Rated (kg·m) 74.5Limit of positive stability(°) 125.0 Stability Index 124.4 BLR index 0.0000Default crew weight557 Declared crew weight 450
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRDPBWPIPA0.0032
EDL1.000ST10.042ST20.180
ST30.180ST40.112ST50.250
RIG
BackstayAdjustableForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P11.850IG11.500ISP11.640MDT10.104MDL10.150MDT2MDL2TLTaperMWGO
E4.310J3.300BAS1.530FSDFoilSFJ0.000SPL3.320WPLTPS4.950BDMWT94.00MCG4.200
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date01/01/2015
SFFP0.275FFMFF1.083LCFcl5.213SG
SAFP8.975FAMFA0.870LCFsh5.421HBI1.007
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004P6D Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
PimuFIN-10358
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.991.742.873.7531.4910.250.991.722.883.6631.23
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.070.480.921.752.573.4311.56YesNo 20.1426/05/2015
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.2011.2011.206.465.9959.42111.4011.4011.405.9956.88
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment112.6110.5411.585.446.8080%55.1002/05/2022
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.3 mTable area0.44 m²Headroom1.65 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity66 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity36 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004P6D Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org