Non Spin/HSFClub 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°39.1°
Beat VMG2.313.273.954.394.604.694.754.784.70
52°3.614.955.806.226.426.526.586.656.65
60°3.875.205.996.376.586.696.776.876.89
75°4.055.366.136.506.756.947.097.297.40
90°3.945.256.086.526.817.077.327.737.94
110°3.394.765.756.356.727.067.418.178.77
120°3.124.475.496.186.596.927.278.098.99
135°2.633.894.925.746.296.666.977.718.62
150°2.193.314.325.175.886.366.707.358.15
Run VMG1.902.873.764.595.345.976.417.067.77
Gybe Angles143.9°149.3°155.5°180.0°180.0°180.0°180.0°180.0°180.0°
APH ToD:629.0CDL: 7.490APH ToT: 0.9539CertNo:
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 Allowance0.170%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 FlyingSymmetricAsymmetric
STORM SAIL AREAS Maximum (m²)
Trysail8.59Storm Jib5.28Heavy Weather Jib14.25
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ Spinnaker pole aboard
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  04140004Q2K Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Non Spin/HSFClub 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 VMG1557.51101.7910.6819.7782.1767.3758.5752.7766.1
52°996.0726.8620.8579.0560.8552.5547.1541.0541.0
60°929.9692.0600.5565.2547.4537.9531.8524.1522.2
75°888.9672.1587.3553.6533.2518.6507.8494.0486.7
90°914.3685.1592.0552.6529.0509.1491.5465.6453.3
110°1063.5756.0625.7566.9535.4510.1485.6440.4410.4
120°1153.3804.6655.7582.5546.2520.2495.2444.8400.6
135°1370.9925.0731.5627.0572.2540.9516.3467.2417.8
150°1642.41086.6833.7695.9612.7566.2537.4490.1442.0
Run VMG1896.51254.7957.5783.7674.2603.5561.7510.3463.1
Selected Courses
Windward / Leeward1727.01178.2934.0801.7728.2685.4660.1631.5614.6
All purpose1286.0899.5733.3650.4606.1579.7561.3533.8515.2
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward765.80.7835
All purpose629.00.9539
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7128
Downwind "popa"0.7857
70% up, 30% down "Ilhabela"0.7332
30% up, 70% down "Ilhabela-inverso"0.7623
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Predominantly Upwind667.80.8985
Predominantly Downwind653.00.9188
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP654.60.9167 Predom. Rc High507.61.1821 5B SF Bay L/M848.80.7068 TriNum AP Low816.40.7349 Predom. Dn Low1050.80.5710 5B SF Bay Med722.00.8310 TriNum AP Med624.90.9601 Predom. Dn L/M751.10.7988 5B SF Bay M/H654.10.9173 TriNum AP High555.61.0799 Predom. Dn Med626.70.9573 5B SF Bay High624.70.9605 TriNum W/L Low1110.00.5406 Predom. Dn M/H553.11.0847 5B AP Low923.40.6497 TriNum W/L Med759.10.7904 Predom. Dn High512.71.1704 5B AP L/M709.80.8454 TriNum W/L Hig655.70.9151 ChiMac Up Low840.80.7136 5B AP Med615.90.9742 Predom. Upwind695.50.8627 ChiMac Up Med758.90.7906 5B AP M/H563.51.0647 Predom. Reaching630.70.9513 ChiMac Up High664.30.9033 5B AP High535.31.1208 Predom. Downwind687.80.8723 ChiMac Off Low888.70.6751 5B W/L Low1254.40.4783 Predom. Up Low958.50.6260 ChiMac Off Med774.00.7752 5B W/L L/M893.00.6719 Predom. Up L/M728.60.8235 ChiMac Off High639.60.9381 5B W/L Med744.70.8057 Predom. Up Med646.40.9282 ChiMac AP Low858.60.6989 5B W/L M/H665.20.9019 Predom. Up M/H606.30.9896 ChiMac AP Med762.00.7874 5B W/L High633.50.9471 Predom. Up High588.71.0192 ChiMac AP High649.00.9245 W/L 60-40 Low1237.10.4850 Predom. Rc Low888.80.6751 BayMac Cove Island995.70.6026 W/L 60-40 L/M891.90.6727 Predom. Rc L/M670.40.8950 BayMac Shore983.90.6098 W/L 60-40 Med754.70.7951 Predom. Rc Med586.81.0225 Harvest Moon557.11.0771 W/L 60-40 M/H684.40.8767 Predom. Rc M/H537.31.1168 5B SF Bay Low1040.80.5765 W/L 60-40 High658.00.9118      SA/DSPL Up24.09SA/DSPL Dn24.09
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance684.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating684.50.8765
FinRating, kevyt tuuli1240.20.8063
FinRating, kova tuuli538.30.9288
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8765
Triple Number Coastal/Long Distance Low0.7349
Triple Number Coastal/Long Distance Medium0.9602
Triple Number Coastal/Long Distance High1.0799
Triple Number Windward/Leeward Low0.5681
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
For information
General Purpose Handicap (GPH)707.8
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Saronikos S All Purpose702.50.8540
Saronikos S Upwind769.10.7801
Saronikos S Downwind636.60.9425
Saronikos N All Purpose748.10.8021
Saronikos N Upwind803.00.7472
Saronikos N Downwind708.90.8464
Saronikos SW All Purpose713.40.8411
Saronikos SW Upwind788.50.7610
Saronikos SW Downwind654.60.9166
Saronikos NE All Purpose787.10.7622
Saronikos NE Upwind756.10.7935
Saronikos NE Downwind807.90.7426
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose654.60.9167
5-Band All Purpose Low996.70.6020
5-Band All Purpose L/M736.20.8150
5-Band All Purpose Med634.40.9458
5-Band All Purpose M/H577.81.0385
5-Band All Purpose High548.81.0932
Single Number Predominant Upwind665.50.9016
Single Number Predominant Reaching605.10.9916
Single Number Predominant Downwind654.60.9166
5-Band 50-50 Windward/Leeward Low1254.40.4783
5-Band 50-50 Windward/Leeward L/M893.00.6719
5-Band 50-50 Windward/Leeward Med744.70.8057
5-Band 50-50 Windward/Leeward M/H665.20.9019
5-Band 50-50 Windward/Leeward High633.50.9471
5-Band 60-40 Windward/Leeward Low1237.10.4850
5-Band 60-40 Windward/Leeward L/M891.90.6727
5-Band 60-40 Windward/Leeward Med754.70.7951
5-Band 60-40 Windward/Leeward M/H684.40.8767
5-Band 60-40 Windward/Leeward High658.00.9118
Triple Number 50-50 Windward/Leeward Low1110.00.5406
Triple Number 50-50 Windward/Leeward Med759.30.7902
Triple Number 50-50 Windward/Leeward High655.70.9151
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward774.90.7742
Triple Number 60-40 Windward/Leeward Low1098.40.5462
Triple Number 60-40 Windward/Leeward Med767.70.7815
Triple Number 60-40 Windward/Leeward High676.20.8872
Triple Number All-Purpose Low891.20.6732
Triple Number All-Purpose Med644.30.9312
Triple Number All-Purpose High569.61.0534
Triple Number Predominant Upwind Low875.90.6850
Triple Number Predominant Upwind Med657.10.9131
Triple Number Predominant Upwind High605.50.9909
Triple Number Predominant Reaching Low803.80.7465
Triple Number Predominant Reaching Med603.60.9941
Triple Number Predominant Reaching High520.51.1528
Triple Number Predominant Downwind Low927.40.6470
Triple Number Predominant Downwind Med641.50.9353
Triple Number Predominant Downwind High533.71.1243
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low816.4
Triple Number Coastal/Long Distance Medium624.9
Triple Number Coastal/Long Distance High555.6
Triple Number Windward/Leeward Low1056.2
Triple Number Windward/Leeward Medium759.1
Triple Number Windward/Leeward High655.7
Predominantly Upwind667.8
Predominantly Downwind653.0
Predominantly Reaching619.8
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7349
Triple Number Coastal/Long Distance Medium0.9602
Triple Number Coastal/Long Distance High1.0799
Triple Number Windward/Leeward Low0.5681
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9151
Coastal/Long Distance0.8765
Predominantly Upwind0.8985
Predominantly Downwind0.9188
For information
General Purpose Handicap (GPH)707.8
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9539
Distanseseilas Trippeltall svak vind0.7349
Distanseseilas Trippeltall mellomvind0.9602
Distanseseilas Trippeltall sterk vind1.0799
Pølsebane Trippeltall svak vind0.5681
Pølsebane Trippeltall mellomvind0.7904
Pølsebane Trippeltall sterk vind0.9151
Motvind Singeltall0.8985
Medvind Singeltall0.9188
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Coastal/Long Distance684.50.8765
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind667.80.8985
Predominantly Downwind653.00.9188
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore619.70.9683
Cape Doctor Coastal520.81.1521
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7349
Triple Number Coastal/Long Distance Medium0.9602
Triple Number Coastal/Long Distance High1.0799
Triple Number Windward/Leeward Low0.5681
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9151
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7349
Triple Number Coastal/Long Distance Medium0.9602
Triple Number Coastal/Long Distance High1.0799
Triple Number Windward/Leeward Low0.5681
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9151
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Predominantly Upwind667.80.8985
Predominantly Downwind653.00.9188
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.50.8765
Triple Number Coastal/Long Distance Low816.40.7349
Triple Number Coastal/Long Distance Medium624.90.9602
Triple Number Coastal/Long Distance High555.61.0799
Triple Number Windward/Leeward Low1056.20.5681
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High655.70.9151
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1744.01185.8881.3728.2644.6601.0567.6510.6488.5
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP654.60.9167 Predom. Dn High512.71.1704 5B AP M/H563.51.0647 TriNum AP Low816.40.7349 Predom. Rc Low888.80.6751 5B AP High535.31.1208 TriNum AP Med624.90.9601 Predom. Rc L/M670.40.8950 5B SF Bay Low1040.80.5765 TriNum AP High555.61.0799 Predom. Rc Med586.81.0225 5B SF Bay L/M848.80.7068 TriNum W/L Low1110.00.5406 Predom. Rc M/H537.31.1168 5B SF Bay Med722.00.8310 TriNum W/L Med759.10.7904 Predom. Rc High507.61.1821 5B SF Bay M/H654.10.9173 TriNum W/L Hig655.70.9151 5B W/L Low1254.40.4783 5B SF Bay High624.70.9605 Predom. Upwind695.50.8627 5B W/L L/M893.00.6719 ChiMac Up Low840.80.7136 Predom. Reaching630.70.9513 5B W/L Med744.70.8057 ChiMac Up Med758.90.7906 Predom. Downwind687.80.8723 5B W/L M/H665.20.9019 ChiMac Up High664.30.9033 Predom. Up Low958.50.6260 5B W/L High633.50.9471 ChiMac Off Low888.70.6751 Predom. Up L/M728.60.8235 W/L 60-40 Low1237.10.4850 ChiMac Off Med774.00.7752 Predom. Up Med646.40.9282 W/L 60-40 L/M891.90.6727 ChiMac Off High639.60.9381 Predom. Up M/H606.30.9896 W/L 60-40 Med754.70.7951 ChiMac AP Low858.60.6989 Predom. Up High588.71.0192 W/L 60-40 M/H684.40.8767 ChiMac AP Med762.00.7874 Predom. Dn Low1050.80.5710 W/L 60-40 High658.00.9118 ChiMac AP High649.00.9245 Predom. Dn L/M751.10.7988 5B AP Low923.40.6497 BayMac Cove Island995.70.6026 Predom. Dn Med626.70.9573 5B AP L/M709.80.8454 BayMac Shore983.90.6098 Predom. Dn M/H553.11.0847 5B AP Med615.90.9742 Harvest Moon557.11.0771      SA/DSPL Up24.09SA/DSPL Dn24.09
ORC Ref  04140004Q2K Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Non Spin/HSFClub 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 L7.689LSM07.292Accomod. 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  04140004Q2K Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Non Spin/HSFClub 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
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04140004Q2K Issued on 15/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org