Club Certificate2026
TRUE BLUEFIN-5347
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 Angles45.7°42.9°40.7°38.7°37.5°37.3°37.2°37.5°39.0°
Beat VMG2.313.273.954.394.604.694.754.784.70
52°3.614.955.806.226.426.526.586.656.66
60°3.875.205.996.376.586.696.776.876.90
75°4.055.356.136.506.756.947.097.297.40
90°3.945.386.236.636.887.067.327.737.94
110°3.885.346.266.727.097.467.808.208.48
120°3.705.146.106.637.037.457.908.649.23
135°3.194.585.636.336.767.167.628.7010.35
150°2.633.864.925.816.416.807.188.119.37
Run VMG2.283.344.275.075.756.276.677.408.28
Gybe Angles138.1°145.7°151.0°154.8°163.7°172.3°178.1°177.2°169.4°
APH ToD:605.6CDL: 7.491APH ToT: 0.9908CertNo:
BOAT
ClassFINNFLYER 31 LFDesignerEIVIND STILLBuilderPOLAR YACHTAge date06/1986Series date06/1986Offset fileFIN5347mod.offData fileFIN5347
HULL
Length Overall9.380 mMaximum Beam3.240 mDraft1.718 mDisplacement2,568 kgDLR6.6218IMS DivisionPerformanceDynamic Allowance0.090%Age Allowance0.650%RS Assessment-0.381%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.405m
CREW
Maximum weight450 kg(declared)Minimum weight320 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail29.2429.91Headsail Luffed16.0916.09Headsail FlyingSymmetric49.6149.61Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail8.59Storm Jib5.28Heavy Weather Jib14.25
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 47.2 kg·m Stability Index 107.5
COMMENTS
Modded hull 2021
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  04140004Q2I Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
TRUE BLUEFIN-5347
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 VMG1558.21102.2910.9819.8782.1767.2758.3752.4765.7
52°996.5727.2621.0579.1560.9552.4547.0541.0540.9
60°930.4692.3600.7565.3547.5537.8531.8524.0522.1
75°889.3672.4587.5553.7533.3518.6507.8494.0486.7
90°914.7669.6578.2542.7523.4509.6491.6465.7453.3
110°928.3673.9575.1535.8507.7482.3461.6438.8424.5
120°972.0700.8589.8543.1512.4483.4455.9416.7390.2
135°1127.6786.0639.4568.7532.5502.8472.6413.8347.9
150°1367.9933.0731.2619.7561.9529.2501.1443.7384.0
Run VMG1579.51077.3843.7710.7625.6573.7539.6486.7434.5
Selected Courses
Windward / Leeward1568.91089.8877.3765.3703.8670.5649.0619.6600.1
All purpose1181.4838.2693.2623.9586.8564.4546.6519.8500.5
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward736.40.8148
All purpose605.60.9908
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7127
Downwind "popa"0.8647
70% up, 30% down "Ilhabela"0.7524
30% up, 70% down "Ilhabela-inverso"0.8127
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Predominantly Upwind654.60.9165
Predominantly Downwind612.70.9793
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP629.50.9531 Predom. Rc High490.31.2237 5B SF Bay L/M805.00.7453 TriNum AP Low765.70.7836 Predom. Dn Low934.20.6423 5B SF Bay Med697.00.8609 TriNum AP Med602.50.9959 Predom. Dn L/M690.70.8687 5B SF Bay M/H638.40.9398 TriNum AP High541.01.1091 Predom. Dn Med593.01.0118 5B SF Bay High608.40.9862 TriNum W/L Low1030.90.5820 Predom. Dn M/H529.81.1324 5B AP Low850.30.7056 TriNum W/L Med730.50.8214 Predom. Dn High486.31.2337 5B AP L/M674.40.8897 TriNum W/L Hig643.30.9327 ChiMac Up Low816.00.7353 5B AP Med594.71.0089 Predom. Upwind681.20.8807 ChiMac Up Med740.30.8105 5B AP M/H548.51.0940 Predom. Reaching603.50.9941 ChiMac Up High652.00.9202 5B AP High521.11.1515 Predom. Downwind639.90.9376 ChiMac Off Low804.20.7461 5B W/L Low1156.40.5188 Predom. Up Low924.60.6489 ChiMac Off Med711.10.8437 5B W/L L/M843.50.7113 Predom. Up L/M710.40.8446 ChiMac Off High599.61.0007 5B W/L Med718.40.8352 Predom. Up Med636.20.9431 ChiMac AP Low806.10.7444 5B W/L M/H652.20.9199 Predom. Up M/H599.31.0012 ChiMac AP Med722.90.8300 5B W/L High621.30.9657 Predom. Up High580.61.0333 ChiMac AP High624.00.9616 W/L 60-40 Low1158.80.5178 Predom. Rc Low826.10.7263 BayMac Cove Island926.50.6476 W/L 60-40 L/M852.40.7039 Predom. Rc L/M636.00.9434 BayMac Shore918.60.6532 W/L 60-40 Med733.60.8179 Predom. Rc Med567.31.0576 Harvest Moon534.11.1234 W/L 60-40 M/H674.00.8903 Predom. Rc M/H522.81.1478 5B SF Bay Low972.80.6168 W/L 60-40 High648.20.9257      SA/DSPL Up24.09SA/DSPL Dn41.91
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance656.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating656.80.9136
FinRating, kevyt tuuli1138.90.8780
FinRating, kova tuuli523.60.9548
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9136
Triple Number Coastal/Long Distance Low0.7836
Triple Number Coastal/Long Distance Medium0.9960
Triple Number Coastal/Long Distance High1.1091
Triple Number Windward/Leeward Low0.6100
Triple Number Windward/Leeward Medium0.8214
Triple Number Windward/Leeward High0.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
For information
General Purpose Handicap (GPH)677.0
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Saronikos S All Purpose683.60.8777
Saronikos S Upwind768.20.7810
Saronikos S Downwind581.61.0317
Saronikos N All Purpose719.90.8334
Saronikos N Upwind801.30.7488
Saronikos N Downwind637.60.9410
Saronikos SW All Purpose687.50.8727
Saronikos SW Upwind786.70.7627
Saronikos SW Downwind590.51.0161
Saronikos NE All Purpose745.30.8051
Saronikos NE Upwind754.10.7957
Saronikos NE Downwind713.10.8414
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose629.50.9531
5-Band All Purpose Low924.70.6488
5-Band All Purpose L/M698.30.8593
5-Band All Purpose Med613.30.9783
5-Band All Purpose M/H563.71.0644
5-Band All Purpose High533.01.1256
Single Number Predominant Upwind653.10.9187
Single Number Predominant Reaching581.31.0321
Single Number Predominant Downwind613.70.9777
5-Band 50-50 Windward/Leeward Low1156.40.5188
5-Band 50-50 Windward/Leeward L/M843.50.7113
5-Band 50-50 Windward/Leeward Med718.40.8352
5-Band 50-50 Windward/Leeward M/H652.20.9199
5-Band 50-50 Windward/Leeward High621.30.9657
5-Band 60-40 Windward/Leeward Low1158.80.5178
5-Band 60-40 Windward/Leeward L/M852.40.7039
5-Band 60-40 Windward/Leeward Med733.60.8179
5-Band 60-40 Windward/Leeward M/H674.00.8903
5-Band 60-40 Windward/Leeward High648.20.9257
Triple Number 50-50 Windward/Leeward Low1030.90.5820
Triple Number 50-50 Windward/Leeward Med730.50.8213
Triple Number 50-50 Windward/Leeward High643.30.9327
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward751.40.7985
Triple Number 60-40 Windward/Leeward Low1035.20.5796
Triple Number 60-40 Windward/Leeward Med744.80.8056
Triple Number 60-40 Windward/Leeward High666.30.9005
Triple Number All-Purpose Low832.10.7211
Triple Number All-Purpose Med621.60.9652
Triple Number All-Purpose High555.41.0802
Triple Number Predominant Upwind Low844.20.7107
Triple Number Predominant Upwind Med645.60.9294
Triple Number Predominant Upwind High600.50.9991
Triple Number Predominant Reaching Low752.10.7977
Triple Number Predominant Reaching Med583.01.0291
Triple Number Predominant Reaching High505.61.1868
Triple Number Predominant Downwind Low834.40.7190
Triple Number Predominant Downwind Med603.20.9948
Triple Number Predominant Downwind High507.91.1813
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low765.7
Triple Number Coastal/Long Distance Medium602.4
Triple Number Coastal/Long Distance High541.0
Triple Number Windward/Leeward Low983.6
Triple Number Windward/Leeward Medium730.5
Triple Number Windward/Leeward High643.3
Predominantly Upwind654.6
Predominantly Downwind612.7
Predominantly Reaching589.7
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7836
Triple Number Coastal/Long Distance Medium0.9960
Triple Number Coastal/Long Distance High1.1091
Triple Number Windward/Leeward Low0.6100
Triple Number Windward/Leeward Medium0.8214
Triple Number Windward/Leeward High0.9327
Coastal/Long Distance0.9136
Predominantly Upwind0.9165
Predominantly Downwind0.9793
For information
General Purpose Handicap (GPH)677.0
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9908
Distanseseilas Trippeltall svak vind0.7836
Distanseseilas Trippeltall mellomvind0.9960
Distanseseilas Trippeltall sterk vind1.1091
Pølsebane Trippeltall svak vind0.6100
Pølsebane Trippeltall mellomvind0.8214
Pølsebane Trippeltall sterk vind0.9327
Motvind Singeltall0.9165
Medvind Singeltall0.9793
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Coastal/Long Distance656.80.9136
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind654.60.9165
Predominantly Downwind612.70.9793
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore605.90.9902
Cape Doctor Coastal506.31.1851
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7836
Triple Number Coastal/Long Distance Medium0.9960
Triple Number Coastal/Long Distance High1.1091
Triple Number Windward/Leeward Low0.6100
Triple Number Windward/Leeward Medium0.8214
Triple Number Windward/Leeward High0.9327
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7836
Triple Number Coastal/Long Distance Medium0.9960
Triple Number Coastal/Long Distance High1.1091
Triple Number Windward/Leeward Low0.6100
Triple Number Windward/Leeward Medium0.8214
Triple Number Windward/Leeward High0.9327
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Predominantly Upwind654.60.9165
Predominantly Downwind612.70.9793
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance656.80.9136
Triple Number Coastal/Long Distance Low765.70.7836
Triple Number Coastal/Long Distance Medium602.40.9960
Triple Number Coastal/Long Distance High541.01.1091
Triple Number Windward/Leeward Low983.60.6100
Triple Number Windward/Leeward Medium730.50.8214
Triple Number Windward/Leeward High643.30.9327
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1569.91088.5826.8695.9624.1585.3552.1496.6477.2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP629.50.9531 Predom. Dn High486.31.2337 5B AP M/H548.51.0940 TriNum AP Low765.70.7836 Predom. Rc Low826.10.7263 5B AP High521.11.1515 TriNum AP Med602.50.9959 Predom. Rc L/M636.00.9434 5B SF Bay Low972.80.6168 TriNum AP High541.01.1091 Predom. Rc Med567.31.0576 5B SF Bay L/M805.00.7453 TriNum W/L Low1030.90.5820 Predom. Rc M/H522.81.1478 5B SF Bay Med697.00.8609 TriNum W/L Med730.50.8214 Predom. Rc High490.31.2237 5B SF Bay M/H638.40.9398 TriNum W/L Hig643.30.9327 5B W/L Low1156.40.5188 5B SF Bay High608.40.9862 Predom. Upwind681.20.8807 5B W/L L/M843.50.7113 ChiMac Up Low816.00.7353 Predom. Reaching603.50.9941 5B W/L Med718.40.8352 ChiMac Up Med740.30.8105 Predom. Downwind639.90.9376 5B W/L M/H652.20.9199 ChiMac Up High652.00.9202 Predom. Up Low924.60.6489 5B W/L High621.30.9657 ChiMac Off Low804.20.7461 Predom. Up L/M710.40.8446 W/L 60-40 Low1158.80.5178 ChiMac Off Med711.10.8437 Predom. Up Med636.20.9431 W/L 60-40 L/M852.40.7039 ChiMac Off High599.61.0007 Predom. Up M/H599.31.0012 W/L 60-40 Med733.60.8179 ChiMac AP Low806.10.7444 Predom. Up High580.61.0333 W/L 60-40 M/H674.00.8903 ChiMac AP Med722.90.8300 Predom. Dn Low934.20.6423 W/L 60-40 High648.20.9257 ChiMac AP High624.00.9616 Predom. Dn L/M690.70.8687 5B AP Low850.30.7056 BayMac Cove Island926.50.6476 Predom. Dn Med593.01.0118 5B AP L/M674.40.8897 BayMac Shore918.60.6532 Predom. Dn M/H529.81.1324 5B AP Med594.71.0089 Harvest Moon534.11.1234      SA/DSPL Up24.09SA/DSPL Dn41.91
ORC Ref  04140004Q2I Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
TRUE BLUEFIN-5347
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFINNFLYER 31 LFMeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.380Maximum beam3.240Draft1.718Displacement2,568Wetted area15.49IMS L7.691LSM07.292Accomod. length9.380Sink (kg/mm) 11.43
VCGD-0.011VCGM0.012 RM Rated (kg·m) 47.2Limit of positive stability(°) 113.9 Stability Index 107.5 BLR index 0.0000Default crew weight439 Declared crew weight 450
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.405PBW0.100PIPA0.0044
PSD0.025PHD0.067PHL0.120
PSA18.0°ESL0.930
ST10.022ST20.095ST30.095
ST40.043ST50.300
RIG
BackstayAdjustableForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysYesSpreaders2Rotating mastNo
P11.519IG10.209ISP10.410MDT10.085MDL10.135MDT20.054MDL20.092TL2.270MW0.135GO0.155
E4.257J3.210BAS1.309FSD0.026SFJSPL3.200WPLTPSBD0.137MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered49.5Flotation Date14/05/1993
SFFP0.616FFM1.041FF1.056LCFcl4.933SG1.0050
SAFP8.279FAM0.907FA0.916LCFsh5.184HBI0.959
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004Q2I Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
TRUE BLUEFIN-5347
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.150.881.612.763.5829.24North 2014
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC0.080.470.811.612.312.9910.30NoNo 16.09North G1 Light 2020ORC20.080.460.841.552.252.9610.30NoNo 15.80North New G1 med+heavy 2020
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC10.3010.3010.305.795.7449.61North S2.5 2012ORC210.3010.3010.305.765.7649.44North S3 2016
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04140004Q2I Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org