Double HandedClub Certificate2026
RamonaFIN 6283
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 Angles46.5°42.9°41.1°40.8°40.4°40.3°40.3°40.9°42.8°
Beat VMG2.403.323.904.214.344.404.424.404.24
52°3.785.015.766.136.286.346.386.406.34
60°4.055.255.976.306.466.536.576.626.59
75°4.265.426.116.456.646.766.836.936.97
90°4.165.366.156.546.726.907.047.267.42
110°3.995.406.286.706.997.257.457.767.86
120°3.865.276.186.656.977.297.628.118.37
135°3.384.765.776.416.797.117.478.208.84
150°2.804.045.065.886.456.817.127.858.56
Run VMG2.423.504.385.135.806.296.667.277.95
Gybe Angles139.7°144.6°148.5°154.9°163.7°171.1°178.1°177.9°177.2°
APH ToD:617.0CDL: 7.260APH ToT: 0.9724CertNo:
BOAT
ClassInferno 31DesignerHåkan SödergrenBuilder-Age date01/1988Series date01/1985Offset fileINFERNO-31 NR.offData fileFIN6283
HULL
Length Overall9.450 mMaximum Beam3.018 mDraft1.639 mDisplacement4,420 kgDLR8.5840IMS DivisionCruiser/RacerDynamic Allowance0.190%Age Allowance0.650%RS Assessment-0.254%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.385m
CREW
Maximum weight160 kg(declared)Minimum weight120 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail30.5131.09Headsail Luffed30.5330.53Headsail FlyingSymmetric69.8369.83Asymmetric66.7066.70 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail8.99Storm Jib6.91Heavy Weather Jib18.64
SAIL LIMITS
Headsails5Spinnakers4
✱ Asymmetric SHALL NOT be tacked on the pole
STABILITY
Righting Moment 77.3 kg·m Stability Index 127.4
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  04140004P71 Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedClub Certificate2026
RamonaFIN 6283
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 VMG1498.41083.2922.8854.8828.6817.9813.7818.3849.1
52°952.7718.2624.8587.5573.4567.5564.3562.4567.9
60°888.0685.8603.3571.2557.3551.5547.8544.1545.9
75°846.0664.2588.9558.0542.2532.7527.1519.4516.5
90°865.2672.2585.5550.2535.5522.1511.3495.9484.9
110°901.6666.4573.5537.2515.1496.3483.1463.7458.3
120°932.2683.6582.5541.3516.2494.0472.3443.9429.9
135°1065.0756.0623.6561.9530.4506.1482.2439.0407.2
150°1286.9890.5711.5612.0558.1528.9505.3458.6420.7
Run VMG1486.01028.2821.5701.5620.8572.1540.2495.4452.8
Selected Courses
Windward / Leeward1492.21055.7872.2778.2724.7695.0677.0656.8650.9
All purpose1125.9818.6690.8631.3600.2581.6568.6550.4544.0
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward752.60.7972
All purpose617.00.9724
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6841
Downwind "popa"0.8787
70% up, 30% down "Ilhabela"0.7328
30% up, 70% down "Ilhabela-inverso"0.8096
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Predominantly Upwind670.90.8943
Predominantly Downwind614.40.9765
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP640.80.9363 Predom. Rc High519.11.1557 5B SF Bay L/M807.60.7429 TriNum AP Low754.70.7950 Predom. Dn Low900.60.6662 5B SF Bay Med716.40.8375 TriNum AP Med613.50.9780 Predom. Dn L/M683.60.8777 5B SF Bay M/H668.40.8977 TriNum AP High565.01.0619 Predom. Dn Med596.91.0053 5B SF Bay High649.20.9242 TriNum W/L Low1007.40.5956 Predom. Dn M/H543.01.1051 5B AP Low826.40.7260 TriNum W/L Med747.40.8028 Predom. Dn High510.91.1744 5B AP L/M675.30.8886 TriNum W/L Hig673.90.8903 ChiMac Up Low810.80.7400 5B AP Med607.10.9883 Predom. Upwind695.40.8629 ChiMac Up Med746.60.8037 5B AP M/H570.41.0519 Predom. Reaching609.70.9842 ChiMac Up High672.50.8922 5B AP High552.51.0861 Predom. Downwind640.00.9375 ChiMac Off Low785.30.7640 5B W/L Low1119.00.5362 Predom. Up Low903.30.6642 ChiMac Off Med702.90.8536 5B W/L L/M844.30.7107 Predom. Up L/M716.80.8371 ChiMac Off High605.20.9915 5B W/L Med736.90.8142 Predom. Up Med655.10.9159 ChiMac AP Low794.60.7551 5B W/L M/H680.60.8815 Predom. Up M/H627.10.9568 ChiMac AP Med722.30.8307 5B W/L High659.30.9101 Predom. Up High617.60.9715 ChiMac AP High637.30.9415 W/L 60-40 Low1124.50.5335 Predom. Rc Low804.20.7460 BayMac Cove Island906.70.6617 W/L 60-40 L/M857.10.7000 Predom. Rc L/M636.20.9431 BayMac Shore899.60.6670 W/L 60-40 Med757.10.7925 Predom. Rc Med576.21.0413 Harvest Moon544.41.1022 W/L 60-40 M/H707.80.8477 Predom. Rc M/H540.71.1097 5B SF Bay Low950.60.6312 W/L 60-40 High692.00.8671      SA/DSPL Up22.55SA/DSPL Dn37.07
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance668.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating668.80.8971
FinRating, kevyt tuuli1099.30.9097
FinRating, kova tuuli555.80.8995
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8971
Triple Number Coastal/Long Distance Low0.7950
Triple Number Coastal/Long Distance Medium0.9781
Triple Number Coastal/Long Distance High1.0619
Triple Number Windward/Leeward Low0.6224
Triple Number Windward/Leeward Medium0.8028
Triple Number Windward/Leeward High0.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
For information
General Purpose Handicap (GPH)683.7
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Saronikos S All Purpose694.00.8645
Saronikos S Upwind781.20.7681
Saronikos S Downwind581.21.0324
Saronikos N All Purpose728.70.8234
Saronikos N Upwind811.50.7393
Saronikos N Downwind629.40.9534
Saronikos SW All Purpose693.20.8655
Saronikos SW Upwind790.10.7594
Saronikos SW Downwind590.51.0160
Saronikos NE All Purpose745.00.8054
Saronikos NE Upwind758.50.7910
Saronikos NE Downwind698.50.8590
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose640.80.9363
5-Band All Purpose Low898.10.6681
5-Band All Purpose L/M698.50.8590
5-Band All Purpose Med625.00.9600
5-Band All Purpose M/H584.41.0266
5-Band All Purpose High564.01.0639
Single Number Predominant Upwind669.40.8963
Single Number Predominant Reaching589.11.0185
Single Number Predominant Downwind615.50.9749
5-Band 50-50 Windward/Leeward Low1119.00.5362
5-Band 50-50 Windward/Leeward L/M844.30.7107
5-Band 50-50 Windward/Leeward Med736.90.8142
5-Band 50-50 Windward/Leeward M/H680.60.8815
5-Band 50-50 Windward/Leeward High659.30.9101
5-Band 60-40 Windward/Leeward Low1124.50.5335
5-Band 60-40 Windward/Leeward L/M857.10.7000
5-Band 60-40 Windward/Leeward Med757.10.7925
5-Band 60-40 Windward/Leeward M/H707.80.8477
5-Band 60-40 Windward/Leeward High692.00.8671
Triple Number 50-50 Windward/Leeward Low1007.40.5956
Triple Number 50-50 Windward/Leeward Med747.50.8027
Triple Number 50-50 Windward/Leeward High673.90.8903
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward772.40.7768
Triple Number 60-40 Windward/Leeward Low1015.00.5911
Triple Number 60-40 Windward/Leeward Med766.50.7828
Triple Number 60-40 Windward/Leeward High702.40.8542
Triple Number All-Purpose Low816.10.7352
Triple Number All-Purpose Med632.00.9494
Triple Number All-Purpose High578.51.0372
Triple Number Predominant Upwind Low832.20.7210
Triple Number Predominant Upwind Med662.60.9056
Triple Number Predominant Upwind High631.90.9495
Triple Number Predominant Reaching Low739.60.8112
Triple Number Predominant Reaching Med591.31.0148
Triple Number Predominant Reaching High525.21.1424
Triple Number Predominant Downwind Low811.70.7392
Triple Number Predominant Downwind Med604.80.9921
Triple Number Predominant Downwind High521.31.1510
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low754.7
Triple Number Coastal/Long Distance Medium613.4
Triple Number Coastal/Long Distance High565.0
Triple Number Windward/Leeward Low964.0
Triple Number Windward/Leeward Medium747.4
Triple Number Windward/Leeward High673.9
Predominantly Upwind670.9
Predominantly Downwind614.4
Predominantly Reaching595.2
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7950
Triple Number Coastal/Long Distance Medium0.9781
Triple Number Coastal/Long Distance High1.0619
Triple Number Windward/Leeward Low0.6224
Triple Number Windward/Leeward Medium0.8028
Triple Number Windward/Leeward High0.8903
Coastal/Long Distance0.8971
Predominantly Upwind0.8943
Predominantly Downwind0.9765
For information
General Purpose Handicap (GPH)683.7
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9724
Distanseseilas Trippeltall svak vind0.7950
Distanseseilas Trippeltall mellomvind0.9781
Distanseseilas Trippeltall sterk vind1.0619
Pølsebane Trippeltall svak vind0.6224
Pølsebane Trippeltall mellomvind0.8028
Pølsebane Trippeltall sterk vind0.8903
Motvind Singeltall0.8943
Medvind Singeltall0.9765
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Coastal/Long Distance668.80.8971
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind670.90.8943
Predominantly Downwind614.40.9765
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore652.70.9193
Cape Doctor Coastal545.91.0991
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7950
Triple Number Coastal/Long Distance Medium0.9781
Triple Number Coastal/Long Distance High1.0619
Triple Number Windward/Leeward Low0.6224
Triple Number Windward/Leeward Medium0.8028
Triple Number Windward/Leeward High0.8903
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7950
Triple Number Coastal/Long Distance Medium0.9781
Triple Number Coastal/Long Distance High1.0619
Triple Number Windward/Leeward Low0.6224
Triple Number Windward/Leeward Medium0.8028
Triple Number Windward/Leeward High0.8903
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Predominantly Upwind670.90.8943
Predominantly Downwind614.40.9765
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance668.80.8971
Triple Number Coastal/Long Distance Low754.70.7950
Triple Number Coastal/Long Distance Medium613.40.9781
Triple Number Coastal/Long Distance High565.01.0619
Triple Number Windward/Leeward Low964.00.6224
Triple Number Windward/Leeward Medium747.40.8028
Triple Number Windward/Leeward High673.90.8903
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1491.61053.0821.9705.8640.0603.5573.3523.4513.2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP640.80.9363 Predom. Dn High510.91.1744 5B AP M/H570.41.0519 TriNum AP Low754.70.7950 Predom. Rc Low804.20.7460 5B AP High552.51.0861 TriNum AP Med613.50.9780 Predom. Rc L/M636.20.9431 5B SF Bay Low950.60.6312 TriNum AP High565.01.0619 Predom. Rc Med576.21.0413 5B SF Bay L/M807.60.7429 TriNum W/L Low1007.40.5956 Predom. Rc M/H540.71.1097 5B SF Bay Med716.40.8375 TriNum W/L Med747.40.8028 Predom. Rc High519.11.1557 5B SF Bay M/H668.40.8977 TriNum W/L Hig673.90.8903 5B W/L Low1119.00.5362 5B SF Bay High649.20.9242 Predom. Upwind695.40.8629 5B W/L L/M844.30.7107 ChiMac Up Low810.80.7400 Predom. Reaching609.70.9842 5B W/L Med736.90.8142 ChiMac Up Med746.60.8037 Predom. Downwind640.00.9375 5B W/L M/H680.60.8815 ChiMac Up High672.50.8922 Predom. Up Low903.30.6642 5B W/L High659.30.9101 ChiMac Off Low785.30.7640 Predom. Up L/M716.80.8371 W/L 60-40 Low1124.50.5335 ChiMac Off Med702.90.8536 Predom. Up Med655.10.9159 W/L 60-40 L/M857.10.7000 ChiMac Off High605.20.9915 Predom. Up M/H627.10.9568 W/L 60-40 Med757.10.7925 ChiMac AP Low794.60.7551 Predom. Up High617.60.9715 W/L 60-40 M/H707.80.8477 ChiMac AP Med722.30.8307 Predom. Dn Low900.60.6662 W/L 60-40 High692.00.8671 ChiMac AP High637.30.9415 Predom. Dn L/M683.60.8777 5B AP Low826.40.7260 BayMac Cove Island906.70.6617 Predom. Dn Med596.91.0053 5B AP L/M675.30.8886 BayMac Shore899.60.6670 Predom. Dn M/H543.01.1051 5B AP Med607.10.9883 Harvest Moon544.41.1022      SA/DSPL Up22.55SA/DSPL Dn37.07
ORC Ref  04140004P71 Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedClub Certificate2026
RamonaFIN 6283
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassInferno 31MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.450Maximum beam3.018Draft1.639Displacement4,420Wetted area19.64IMS L8.024LSM08.014Accomod. length9.450Sink (kg/mm) 14.47
VCGD-0.057VCGM-0.042 RM Rated (kg·m) 77.3Limit of positive stability(°) 124.5 Stability Index 127.4 BLR index 0.0000Default crew weight170 Declared crew weight 160
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.385PBW0.100PIPA0.0033
EDL0.880ST10.048ST20.170
ST30.170ST40.098ST50.290
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysNoSpreaders1Rotating mastNo
P12.100IG11.683ISP12.273MDT10.110MDL10.170MDT20.110MDL20.125TL2.485MW0.125GO0.145
E4.245J3.615BAS1.468FSD0.025SFJ0.225SPL3.550WPLTPS4.115BD0.130MWT119.00MCG4.051
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date18/04/2022
SFFP0.593FFMFF1.189LCFcl5.462SG
SAFP8.565FAMFA0.957LCFsh5.669HBI1.034
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004P71 Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedClub Certificate2026
RamonaFIN 6283
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment4TForte0.310.921.582.683.5630.5108/03/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG1L0.130.721.352.623.935.2511.55NoNo 30.5328/02/2023G1M0.060.641.242.493.835.1411.50NoNo 29.2306/05/2023G20.080.611.172.353.554.8511.29NoNo 26.9406/05/2023G30.140.611.111.982.893.8411.55YesNo 22.9130/05/2020G3H0.070.470.901.802.793.8211.56YesNo 21.5306/05/2023
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS112.2512.2512.256.956.4069.8329/03/2023Light RunnerS211.5411.5411.546.206.3259.8525/10/2020Heavy Runner
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentAssy13.2011.1512.186.546.7197%66.7001/02/2023
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.4 mTable area0.44 m²Headroom1.66 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity68 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity38 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004P71 Issued on 08/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org