Club Certificate2026
TiimiFIN 4949
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 Angles46.4°42.8°40.9°40.4°40.0°39.8°39.8°40.2°42.0°
Beat VMG2.433.373.964.274.414.474.504.484.34
52°3.835.085.836.186.336.406.436.466.42
60°4.115.326.026.356.506.576.626.676.66
75°4.325.496.166.496.686.806.876.987.03
90°4.225.426.186.596.816.947.087.317.48
110°3.965.386.276.707.017.307.587.938.12
120°3.825.236.166.646.967.297.648.258.55
135°3.334.715.736.386.767.087.438.198.86
150°2.763.995.015.846.386.737.047.728.43
Run VMG2.393.464.345.065.726.236.617.197.85
Gybe Angles139.7°144.4°148.7°150.5°163.7°171.8°178.6°178.6°177.7°
APH ToD:614.4CDL: 7.371APH ToT: 0.9766CertNo:
BOAT
ClassInferno 31DesignerHakan SodergrenBuilderFinngulf MarinAge date01/1986Series date01/1986Offset fileINFERNO-31.offData fileFIN4949
HULL
Length Overall9.447 mMaximum Beam3.018 mDraft1.637 mDisplacement4,351 kgDLR8.4608IMS DivisionCruiser/RacerDynamic Allowance0.180%Age Allowance0.650%RS Assessment-0.178%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.410m
CREW
Maximum weight240 kg(declared)Minimum weight130 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail31.1631.74Headsail Luffed31.5731.57Headsail FlyingSymmetric60.1860.18Asymmetric63.5657.29 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail9.19Storm Jib6.94Heavy Weather Jib18.74
SAIL LIMITS
Headsails5Spinnakers4
✱ Asymmetric SHALL NOT be tacked on the pole
STABILITY
Righting Moment 77.8 kg·m Stability Index 127.0
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  04140004Q8I Issued on 18/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
TiimiFIN 4949
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 VMG1478.71069.7909.8842.2816.3805.3800.6803.0828.9
52°939.8709.1617.8582.1568.6562.8559.6557.1561.0
60°875.0677.0597.7566.9553.5547.7544.0540.0540.9
75°833.3655.8584.4554.6539.0529.4523.7515.6512.1
90°852.5664.1583.0546.5528.3518.5508.2492.5481.5
110°908.3668.7574.1537.3513.7493.1474.7454.1443.2
120°942.4688.1584.5542.5517.0493.9471.1436.3421.0
135°1080.4764.2628.5564.4532.6508.3484.4439.7406.4
150°1306.1901.5718.4616.8564.6534.8511.7466.3427.3
Run VMG1508.21040.9829.5712.0629.5577.7544.6500.4458.5
Selected Courses
Windward / Leeward1493.41055.3869.7777.1722.9691.5672.6651.7643.7
All purpose1124.3816.6688.6629.2597.6578.7565.0545.9537.3
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward750.20.7998
All purpose614.40.9766
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6946
Downwind "popa"0.8687
70% up, 30% down "Ilhabela"0.7390
30% up, 70% down "Ilhabela-inverso"0.8079
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Predominantly Upwind665.20.9019
Predominantly Downwind615.50.9748
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP638.20.9401 Predom. Rc High516.21.1622 5B SF Bay L/M804.80.7455 TriNum AP Low752.60.7972 Predom. Dn Low904.80.6631 5B SF Bay Med713.20.8413 TriNum AP Med611.10.9819 Predom. Dn L/M685.70.8750 5B SF Bay M/H663.80.9039 TriNum AP High561.31.0690 Predom. Dn Med597.91.0035 5B SF Bay High643.20.9328 TriNum W/L Low1006.30.5962 Predom. Dn M/H543.11.1048 5B AP Low825.80.7266 TriNum W/L Med745.30.8050 Predom. Dn High510.41.1755 5B AP L/M673.10.8914 TriNum W/L Hig669.50.8962 ChiMac Up Low804.20.7460 5B AP Med604.50.9925 Predom. Upwind689.30.8704 ChiMac Up Med740.30.8105 5B AP M/H566.91.0585 Predom. Reaching607.20.9881 ChiMac Up High666.30.9005 5B AP High547.71.0955 Predom. Downwind641.40.9354 ChiMac Off Low788.40.7610 5B W/L Low1118.40.5365 Predom. Up Low896.20.6695 ChiMac Off Med705.10.8509 5B W/L L/M842.70.7120 Predom. Up L/M711.10.8438 ChiMac Off High606.20.9897 5B W/L Med734.70.8166 Predom. Up Med649.50.9238 ChiMac AP Low792.60.7570 5B W/L M/H676.50.8869 Predom. Up M/H621.20.9658 ChiMac AP Med720.10.8333 5B W/L High654.00.9175 Predom. Up High610.70.9825 ChiMac AP High634.60.9454 W/L 60-40 Low1121.10.5352 Predom. Rc Low802.00.7481 BayMac Cove Island905.10.6629 W/L 60-40 L/M853.30.7031 Predom. Rc L/M634.30.9460 BayMac Shore897.50.6685 W/L 60-40 Med752.80.7970 Predom. Rc Med573.71.0459 Harvest Moon543.41.1042 W/L 60-40 M/H701.80.8549 Predom. Rc M/H538.31.1146 5B SF Bay Low948.20.6328 W/L 60-40 High684.60.8765      SA/DSPL Up23.43SA/DSPL Dn35.37
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance666.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating666.30.9005
FinRating, kevyt tuuli1099.10.9098
FinRating, kova tuuli551.40.9068
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9005
Triple Number Coastal/Long Distance Low0.7972
Triple Number Coastal/Long Distance Medium0.9820
Triple Number Coastal/Long Distance High1.0690
Triple Number Windward/Leeward Low0.6234
Triple Number Windward/Leeward Medium0.8050
Triple Number Windward/Leeward High0.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
For information
General Purpose Handicap (GPH)681.1
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Saronikos S All Purpose689.90.8697
Saronikos S Upwind771.40.7778
Saronikos S Downwind585.41.0249
Saronikos N All Purpose723.80.8290
Saronikos N Upwind800.80.7493
Saronikos N Downwind633.60.9470
Saronikos SW All Purpose689.10.8707
Saronikos SW Upwind780.60.7687
Saronikos SW Downwind593.61.0108
Saronikos NE All Purpose741.20.8095
Saronikos NE Upwind749.10.8010
Saronikos NE Downwind702.90.8536
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose638.20.9401
5-Band All Purpose Low896.20.6695
5-Band All Purpose L/M696.50.8614
5-Band All Purpose Med622.60.9637
5-Band All Purpose M/H581.51.0318
5-Band All Purpose High560.21.0710
Single Number Predominant Upwind663.70.9041
Single Number Predominant Reaching586.71.0227
Single Number Predominant Downwind616.50.9732
5-Band 50-50 Windward/Leeward Low1118.40.5365
5-Band 50-50 Windward/Leeward L/M842.70.7120
5-Band 50-50 Windward/Leeward Med734.70.8166
5-Band 50-50 Windward/Leeward M/H676.50.8869
5-Band 50-50 Windward/Leeward High654.00.9175
5-Band 60-40 Windward/Leeward Low1121.10.5352
5-Band 60-40 Windward/Leeward L/M853.30.7031
5-Band 60-40 Windward/Leeward Med752.80.7970
5-Band 60-40 Windward/Leeward M/H701.80.8549
5-Band 60-40 Windward/Leeward High684.60.8765
Triple Number 50-50 Windward/Leeward Low1006.30.5962
Triple Number 50-50 Windward/Leeward Med745.40.8049
Triple Number 50-50 Windward/Leeward High669.50.8962
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward768.00.7813
Triple Number 60-40 Windward/Leeward Low1011.40.5932
Triple Number 60-40 Windward/Leeward Med762.40.7870
Triple Number 60-40 Windward/Leeward High696.10.8619
Triple Number All-Purpose Low814.30.7369
Triple Number All-Purpose Med629.70.9529
Triple Number All-Purpose High575.41.0428
Triple Number Predominant Upwind Low826.10.7263
Triple Number Predominant Upwind Med657.10.9131
Triple Number Predominant Upwind High625.20.9596
Triple Number Predominant Reaching Low737.50.8135
Triple Number Predominant Reaching Med588.71.0192
Triple Number Predominant Reaching High522.91.1474
Triple Number Predominant Downwind Low814.70.7365
Triple Number Predominant Downwind Med606.60.9891
Triple Number Predominant Downwind High522.11.1492
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low752.6
Triple Number Coastal/Long Distance Medium611.0
Triple Number Coastal/Long Distance High561.3
Triple Number Windward/Leeward Low962.5
Triple Number Windward/Leeward Medium745.3
Triple Number Windward/Leeward High669.5
Predominantly Upwind665.2
Predominantly Downwind615.5
Predominantly Reaching594.1
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7972
Triple Number Coastal/Long Distance Medium0.9820
Triple Number Coastal/Long Distance High1.0690
Triple Number Windward/Leeward Low0.6234
Triple Number Windward/Leeward Medium0.8050
Triple Number Windward/Leeward High0.8962
Coastal/Long Distance0.9005
Predominantly Upwind0.9019
Predominantly Downwind0.9748
For information
General Purpose Handicap (GPH)681.1
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9766
Distanseseilas Trippeltall svak vind0.7972
Distanseseilas Trippeltall mellomvind0.9820
Distanseseilas Trippeltall sterk vind1.0690
Pølsebane Trippeltall svak vind0.6234
Pølsebane Trippeltall mellomvind0.8050
Pølsebane Trippeltall sterk vind0.8962
Motvind Singeltall0.9019
Medvind Singeltall0.9748
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Coastal/Long Distance666.30.9005
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind665.20.9019
Predominantly Downwind615.50.9748
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore646.10.9286
Cape Doctor Coastal539.91.1113
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7972
Triple Number Coastal/Long Distance Medium0.9820
Triple Number Coastal/Long Distance High1.0690
Triple Number Windward/Leeward Low0.6234
Triple Number Windward/Leeward Medium0.8050
Triple Number Windward/Leeward High0.8962
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7972
Triple Number Coastal/Long Distance Medium0.9820
Triple Number Coastal/Long Distance High1.0690
Triple Number Windward/Leeward Low0.6234
Triple Number Windward/Leeward Medium0.8050
Triple Number Windward/Leeward High0.8962
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Predominantly Upwind665.20.9019
Predominantly Downwind615.50.9748
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance666.30.9005
Triple Number Coastal/Long Distance Low752.60.7972
Triple Number Coastal/Long Distance Medium611.00.9820
Triple Number Coastal/Long Distance High561.31.0690
Triple Number Windward/Leeward Low962.50.6234
Triple Number Windward/Leeward Medium745.30.8050
Triple Number Windward/Leeward High669.50.8962
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1494.91053.9819.9704.2637.4600.9570.6519.5508.2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP638.20.9401 Predom. Dn High510.41.1755 5B AP M/H566.91.0585 TriNum AP Low752.60.7972 Predom. Rc Low802.00.7481 5B AP High547.71.0955 TriNum AP Med611.10.9819 Predom. Rc L/M634.30.9460 5B SF Bay Low948.20.6328 TriNum AP High561.31.0690 Predom. Rc Med573.71.0459 5B SF Bay L/M804.80.7455 TriNum W/L Low1006.30.5962 Predom. Rc M/H538.31.1146 5B SF Bay Med713.20.8413 TriNum W/L Med745.30.8050 Predom. Rc High516.21.1622 5B SF Bay M/H663.80.9039 TriNum W/L Hig669.50.8962 5B W/L Low1118.40.5365 5B SF Bay High643.20.9328 Predom. Upwind689.30.8704 5B W/L L/M842.70.7120 ChiMac Up Low804.20.7460 Predom. Reaching607.20.9881 5B W/L Med734.70.8166 ChiMac Up Med740.30.8105 Predom. Downwind641.40.9354 5B W/L M/H676.50.8869 ChiMac Up High666.30.9005 Predom. Up Low896.20.6695 5B W/L High654.00.9175 ChiMac Off Low788.40.7610 Predom. Up L/M711.10.8438 W/L 60-40 Low1121.10.5352 ChiMac Off Med705.10.8509 Predom. Up Med649.50.9238 W/L 60-40 L/M853.30.7031 ChiMac Off High606.20.9897 Predom. Up M/H621.20.9658 W/L 60-40 Med752.80.7970 ChiMac AP Low792.60.7570 Predom. Up High610.70.9825 W/L 60-40 M/H701.80.8549 ChiMac AP Med720.10.8333 Predom. Dn Low904.80.6631 W/L 60-40 High684.60.8765 ChiMac AP High634.60.9454 Predom. Dn L/M685.70.8750 5B AP Low825.80.7266 BayMac Cove Island905.10.6629 Predom. Dn Med597.91.0035 5B AP L/M673.10.8914 BayMac Shore897.50.6685 Predom. Dn M/H543.11.1048 5B AP Med604.50.9925 Harvest Moon543.41.1042      SA/DSPL Up23.43SA/DSPL Dn35.37
ORC Ref  04140004Q8I Issued on 18/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
TiimiFIN 4949
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassInferno 31Measurement22/07/2022HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.447Maximum beam3.018Draft1.637Displacement4,351Wetted area19.45IMS L8.048LSM08.011Accomod. length9.447Sink (kg/mm) 14.42
VCGD-0.073VCGM-0.053 RM Rated (kg·m) 77.8Limit of positive stability(°) 124.3 Stability Index 127.0 BLR index 0.0000Default crew weight502 Declared crew weight 240
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.410PBW0.100PIPA0.0049
PSD0.025PHD0.069PHL0.130
PSA22.0°ESL0.800
ST10.025ST20.079ST30.080
ST40.050ST50.140
RIG
BackstayFixedForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysNoSpreaders2Rotating mastNo
P12.500IG11.780ISP11.830MDT10.110MDL10.160MDT20.090MDL20.115TL1.850MW0.160GO0.160
E4.200J3.575BAS1.480FSDSFJ0.185SPL3.590WPLTPS4.575BD0.155MWT105.00MCG4.370
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date22/07/2022
SFFP0.593FFM1.198FF1.205LCFcl5.476SG1.0050
SAFP8.565FAM0.948FA0.953LCFsh5.683HBI1.046
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004Q8I Issued on 18/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
TiimiFIN 4949
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.120.881.602.703.5031.16
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment22.675.3811.60NoNo 31.57
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.6011.6011.606.236.2160.18
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment112.6712.675.826.8285%63.56
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  04140004Q8I Issued on 18/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org