Club Certificate2026
SuvihuviFin 7508
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 Angles46.7°43.7°41.2°40.0°39.2°38.8°38.5°38.5°39.4°
Beat VMG2.543.594.314.714.915.015.065.115.03
52°4.015.476.376.817.007.107.157.227.21
60°4.345.756.596.997.197.297.357.437.45
75°4.585.956.757.157.387.537.637.777.86
90°4.445.856.727.177.457.677.858.128.32
110°4.025.636.717.267.607.888.088.438.68
120°3.875.456.577.207.597.938.278.869.31
135°3.364.876.036.887.387.768.159.0510.25
150°2.764.035.176.186.957.407.778.589.66
Run VMG2.393.494.475.356.146.737.187.888.64
Gybe Angles137.0°144.7°149.6°150.7°158.8°166.2°173.6°177.2°170.0°
APH ToD:563.0CDL: 8.987APH ToT: 1.0658CertNo:
BOAT
ClassSirena 38DesignerHåkan SödergrenBuilderLito MarinAge date01/1982Series date01/1980Offset fileL5530.BOFData fileFIN7508
HULL
Length Overall11.620 mMaximum Beam3.134 mDraft1.776 mDisplacement5,425 kgDLR6.3637IMS DivisionCruiser/RacerDynamic Allowance0.050%Age Allowance0.650%RS Assessment-0.178%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.408m
CREW
Maximum weight450 kg(declared)Minimum weight320 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail36.1136.57Headsail Luffed38.9838.98Headsail FlyingSymmetric84.5984.59Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail11.27Storm Jib8.07Heavy Weather Jib21.78
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 94.5 kg·m Stability Index 129.2
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  04140004R91 Issued on 27/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SuvihuviFin 7508
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 VMG1417.21004.1836.2764.0733.8719.1711.0705.1715.3
52°897.5658.2565.6529.0514.2507.3503.3498.9499.4
60°829.9625.7546.1514.8500.6494.0489.9484.6483.5
75°786.7604.7533.4503.7488.0478.0471.9463.0458.2
90°810.8615.2535.9502.1483.2469.6458.9443.5432.8
110°894.5639.8536.5495.9473.9457.1445.3427.1414.5
120°929.3660.3548.1500.2474.3453.9435.3406.3386.8
135°1071.8740.0597.2523.1487.9463.7441.7397.6351.3
150°1302.3894.4696.8582.7518.2486.5463.3419.8372.8
Run VMG1503.81032.7804.6672.6586.4535.3501.6456.7416.7
Selected Courses
Windward / Leeward1460.51018.4820.4718.3660.1627.2606.3580.9566.0
All purpose1093.3778.6643.6578.9544.6524.6510.8490.4475.8
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward689.80.8699
All purpose563.01.0658
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7674
Downwind "popa"0.9151
70% up, 30% down "Ilhabela"0.8064
30% up, 70% down "Ilhabela-inverso"0.8651
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Predominantly Upwind606.60.9892
Predominantly Downwind570.51.0517
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP585.41.0250 Predom. Rc High463.31.2952 5B SF Bay L/M751.10.7988 TriNum AP Low711.10.8438 Predom. Dn Low875.90.6850 5B SF Bay Med651.30.9212 TriNum AP Med559.31.0727 Predom. Dn L/M645.10.9301 5B SF Bay M/H597.31.0046 TriNum AP High506.61.1843 Predom. Dn Med550.81.0893 5B SF Bay High572.01.0489 TriNum W/L Low963.30.6229 Predom. Dn M/H494.01.2147 5B AP Low789.90.7596 TriNum W/L Med684.60.8764 Predom. Dn High459.71.3051 5B AP L/M626.00.9584 TriNum W/L Hig602.00.9967 ChiMac Up Low751.10.7988 5B AP Med552.41.0862 Predom. Upwind630.60.9515 ChiMac Up Med683.70.8776 5B AP M/H512.61.1706 Predom. Reaching559.31.0727 ChiMac Up High605.30.9913 5B AP High491.41.2209 Predom. Downwind597.11.0049 ChiMac Off Low752.40.7975 5B W/L Low1079.40.5559 Predom. Up Low847.90.7076 ChiMac Off Med664.20.9034 5B W/L L/M789.90.7596 Predom. Up L/M655.80.9150 ChiMac Off High560.41.0707 5B W/L Med673.10.8913 Predom. Up Med589.81.0173 ChiMac AP Low747.80.8024 5B W/L M/H610.10.9835 Predom. Up M/H557.81.0756 ChiMac AP Med671.20.8939 5B W/L High582.71.0297 Predom. Up High543.41.1042 ChiMac AP High581.31.0322 W/L 60-40 Low1076.60.5573 Predom. Rc Low763.00.7863 BayMac Cove Island861.00.6969 W/L 60-40 L/M796.00.7538 Predom. Rc L/M588.81.0190 BayMac Shore852.80.7035 W/L 60-40 Med687.10.8732 Predom. Rc Med524.51.1440 Harvest Moon497.61.2059 W/L 60-40 M/H630.70.9513 Predom. Rc M/H486.91.2322 5B SF Bay Low905.00.6630 W/L 60-40 High607.80.9872      SA/DSPL Up24.18SA/DSPL Dn38.87
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance612.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating612.30.9799
FinRating, kevyt tuuli1061.90.9417
FinRating, kova tuuli494.21.0118
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9799
Triple Number Coastal/Long Distance Low0.8438
Triple Number Coastal/Long Distance Medium1.0728
Triple Number Coastal/Long Distance High1.1843
Triple Number Windward/Leeward Low0.6526
Triple Number Windward/Leeward Medium0.8764
Triple Number Windward/Leeward High0.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
For information
General Purpose Handicap (GPH)629.2
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Saronikos S All Purpose633.80.9466
Saronikos S Upwind706.70.8491
Saronikos S Downwind547.41.0962
Saronikos N All Purpose667.20.8993
Saronikos N Upwind735.40.8159
Saronikos N Downwind598.41.0027
Saronikos SW All Purpose637.00.9419
Saronikos SW Upwind720.50.8328
Saronikos SW Downwind556.91.0775
Saronikos NE All Purpose692.10.8669
Saronikos NE Upwind689.70.8700
Saronikos NE Downwind674.10.8901
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose585.41.0250
5-Band All Purpose Low857.00.7001
5-Band All Purpose L/M648.50.9253
5-Band All Purpose Med569.31.0540
5-Band All Purpose M/H525.31.1423
5-Band All Purpose High501.31.1968
Single Number Predominant Upwind604.90.9919
Single Number Predominant Reaching538.61.1140
Single Number Predominant Downwind571.61.0497
5-Band 50-50 Windward/Leeward Low1079.40.5559
5-Band 50-50 Windward/Leeward L/M789.90.7596
5-Band 50-50 Windward/Leeward Med673.10.8913
5-Band 50-50 Windward/Leeward M/H610.10.9835
5-Band 50-50 Windward/Leeward High582.71.0297
5-Band 60-40 Windward/Leeward Low1076.60.5573
5-Band 60-40 Windward/Leeward L/M796.00.7538
5-Band 60-40 Windward/Leeward Med687.10.8732
5-Band 60-40 Windward/Leeward M/H630.70.9513
5-Band 60-40 Windward/Leeward High607.80.9872
Triple Number 50-50 Windward/Leeward Low963.30.6229
Triple Number 50-50 Windward/Leeward Med684.70.8763
Triple Number 50-50 Windward/Leeward High602.00.9967
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward703.20.8533
Triple Number 60-40 Windward/Leeward Low963.20.6229
Triple Number 60-40 Windward/Leeward Med697.50.8602
Triple Number 60-40 Windward/Leeward High623.80.9619
Triple Number All-Purpose Low772.10.7771
Triple Number All-Purpose Med576.91.0401
Triple Number All-Purpose High518.61.1569
Triple Number Predominant Upwind Low776.30.7729
Triple Number Predominant Upwind Med598.11.0032
Triple Number Predominant Upwind High559.51.0724
Triple Number Predominant Reaching Low695.90.8622
Triple Number Predominant Reaching Med539.01.1131
Triple Number Predominant Reaching High472.31.2705
Triple Number Predominant Downwind Low781.30.7679
Triple Number Predominant Downwind Med561.01.0696
Triple Number Predominant Downwind High474.81.2637
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low711.1
Triple Number Coastal/Long Distance Medium559.3
Triple Number Coastal/Long Distance High506.6
Triple Number Windward/Leeward Low919.4
Triple Number Windward/Leeward Medium684.6
Triple Number Windward/Leeward High602.0
Predominantly Upwind606.6
Predominantly Downwind570.5
Predominantly Reaching547.5
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8438
Triple Number Coastal/Long Distance Medium1.0728
Triple Number Coastal/Long Distance High1.1843
Triple Number Windward/Leeward Low0.6526
Triple Number Windward/Leeward Medium0.8764
Triple Number Windward/Leeward High0.9967
Coastal/Long Distance0.9799
Predominantly Upwind0.9892
Predominantly Downwind1.0517
For information
General Purpose Handicap (GPH)629.2
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0658
Distanseseilas Trippeltall svak vind0.8438
Distanseseilas Trippeltall mellomvind1.0728
Distanseseilas Trippeltall sterk vind1.1843
Pølsebane Trippeltall svak vind0.6526
Pølsebane Trippeltall mellomvind0.8764
Pølsebane Trippeltall sterk vind0.9967
Motvind Singeltall0.9892
Medvind Singeltall1.0517
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Coastal/Long Distance612.30.9799
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind606.60.9892
Predominantly Downwind570.51.0517
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore570.51.0518
Cape Doctor Coastal480.21.2495
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8438
Triple Number Coastal/Long Distance Medium1.0728
Triple Number Coastal/Long Distance High1.1843
Triple Number Windward/Leeward Low0.6526
Triple Number Windward/Leeward Medium0.8764
Triple Number Windward/Leeward High0.9967
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8438
Triple Number Coastal/Long Distance Medium1.0728
Triple Number Coastal/Long Distance High1.1843
Triple Number Windward/Leeward Low0.6526
Triple Number Windward/Leeward Medium0.8764
Triple Number Windward/Leeward High0.9967
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Predominantly Upwind606.60.9892
Predominantly Downwind570.51.0517
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance612.30.9799
Triple Number Coastal/Long Distance Low711.10.8438
Triple Number Coastal/Long Distance Medium559.31.0728
Triple Number Coastal/Long Distance High506.61.1843
Triple Number Windward/Leeward Low919.40.6526
Triple Number Windward/Leeward Medium684.60.8764
Triple Number Windward/Leeward High602.00.9967
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1464.81019.9772.6649.8580.4544.2515.7469.6454.6
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP585.41.0250 Predom. Dn High459.71.3051 5B AP M/H512.61.1706 TriNum AP Low711.10.8438 Predom. Rc Low763.00.7863 5B AP High491.41.2209 TriNum AP Med559.31.0727 Predom. Rc L/M588.81.0190 5B SF Bay Low905.00.6630 TriNum AP High506.61.1843 Predom. Rc Med524.51.1440 5B SF Bay L/M751.10.7988 TriNum W/L Low963.30.6229 Predom. Rc M/H486.91.2322 5B SF Bay Med651.30.9212 TriNum W/L Med684.60.8764 Predom. Rc High463.31.2952 5B SF Bay M/H597.31.0046 TriNum W/L Hig602.00.9967 5B W/L Low1079.40.5559 5B SF Bay High572.01.0489 Predom. Upwind630.60.9515 5B W/L L/M789.90.7596 ChiMac Up Low751.10.7988 Predom. Reaching559.31.0727 5B W/L Med673.10.8913 ChiMac Up Med683.70.8776 Predom. Downwind597.11.0049 5B W/L M/H610.10.9835 ChiMac Up High605.30.9913 Predom. Up Low847.90.7076 5B W/L High582.71.0297 ChiMac Off Low752.40.7975 Predom. Up L/M655.80.9150 W/L 60-40 Low1076.60.5573 ChiMac Off Med664.20.9034 Predom. Up Med589.81.0173 W/L 60-40 L/M796.00.7538 ChiMac Off High560.41.0707 Predom. Up M/H557.81.0756 W/L 60-40 Med687.10.8732 ChiMac AP Low747.80.8024 Predom. Up High543.41.1042 W/L 60-40 M/H630.70.9513 ChiMac AP Med671.20.8939 Predom. Dn Low875.90.6850 W/L 60-40 High607.80.9872 ChiMac AP High581.31.0322 Predom. Dn L/M645.10.9301 5B AP Low789.90.7596 BayMac Cove Island861.00.6969 Predom. Dn Med550.81.0893 5B AP L/M626.00.9584 BayMac Shore852.80.7035 Predom. Dn M/H494.01.2147 5B AP Med552.41.0862 Harvest Moon497.61.2059      SA/DSPL Up24.18SA/DSPL Dn38.87
ORC Ref  04140004R91 Issued on 27/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SuvihuviFin 7508
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSirena 38MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall11.620Maximum beam3.134Draft1.776Displacement5,425Wetted area23.64IMS L9.692LSM09.481Accomod. length10.185Sink (kg/mm) 17.24
VCGD-0.151VCGM-0.109 RM Rated (kg·m) 94.5Limit of positive stability(°) 124.5 Stability Index 129.2 BLR index 0.0000Default crew weight638 Declared crew weight 450
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.408PBW0.105PIPA0.0037
EDL1.300ST10.080ST20.150
ST30.150ST40.100ST50.280
RIG
BackstayAdjustableForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P13.700IG12.700ISP12.750MDT10.110MDL10.160MDT20.090MDL20.115TL2.000MWGO
E4.700J4.160BAS1.400FSDFoilSFJSPL4.060WPLTPS0.000BDMWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date08/04/2020
SFFP0.946FFMFF1.160LCFcl6.526SG
SAFP10.393FAMFA0.970LCFsh6.711HBI1.059
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004R91 Issued on 27/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SuvihuviFin 7508
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.150.871.562.793.7636.11white
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG1261.492.954.536.0512.90NoNo 38.9816/04/2026Light and dark grey
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment112.8012.8012.808.007.6584.5930/08/2020All white
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length10.2 mTable area0.44 m²Headroom1.72 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity84 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity54 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004R91 Issued on 27/05/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org