Club Certificate2025
SEABIRDEST 337
Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
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 Angles43.7°43.7°41.4°39.7°38.3°37.8°37.5°37.9°39.0°
Beat VMG2.303.203.914.424.764.914.984.984.88
52°3.614.895.816.396.736.906.977.026.99
60°3.845.156.056.586.897.087.177.257.25
75°3.975.316.226.737.047.287.477.667.75
90°3.825.186.186.807.137.347.608.018.24
110°3.775.216.306.937.337.698.008.398.72
120°3.625.026.136.837.287.698.088.839.37
135°3.194.495.606.497.027.447.868.7810.17
150°2.603.784.875.836.587.067.448.259.28
Run VMG2.253.274.225.065.816.396.847.578.30
Gybe Angles146.2°146.2°150.1°151.9°158.8°165.3°171.8°175.9°170.9°
APH ToD:591.6CDL: 8.399APH ToT: 1.0142CertNo:116/21
BOAT
ClassFirst 31.7DesignerFarrBuilderBeneteau S.A.Age date05/2003Series date02/1998Offset fileFIRST317-EST337.offData fileEST337
HULL
Length Overall9.610 mMaximum Beam3.212 mDraft1.925 mDisplacement3,726 kgDLR5.2765IMS DivisionCruiser/RacerDynamic Allowance0.300%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.410m
CREW
Maximum weight500 kg(declared)Minimum weight370 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail24.9325.46Headsail Luffed27.4927.49Headsail FlyingSymmetric66.9266.92Asymmetric
STORM SAIL AREAS (m²)
Trysail7.34Storm Jib6.99Heavy Weather Jib18.86
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
ex. Evelyn II
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.
Club Certificate2025
SEABIRDEST 337
Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
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 VMG1564.11126.5920.7814.1756.4733.1723.5722.4737.0
52°997.5736.9619.7563.1535.2522.0516.7513.0514.9
60°938.1699.3594.8546.8522.4508.8502.0496.6496.5
75°907.5678.3579.1535.0511.2494.4482.1470.1464.6
90°943.3694.7582.5529.4505.1490.3473.7449.5437.0
110°954.8691.1571.2519.7490.9467.9450.1428.9412.7
120°995.8716.8587.4526.8494.6468.3445.4407.6384.2
135°1129.4801.6642.6555.1512.8484.1458.1410.1354.0
150°1386.4952.5738.6617.4546.8510.2483.6436.5388.1
Run VMG1602.61099.9852.7711.8620.1563.7526.5475.8433.7
Selected Courses
Windward / Leeward1581.91113.2886.7763.0688.2648.4625.0599.1585.3
All purpose1194.1856.0696.2613.8567.9542.2524.8502.2486.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward725.50.8270
All purpose591.61.0142
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7245
Downwind "popa"0.8659
70% up, 30% down "Ilhabela"0.7619
30% up, 70% down "Ilhabela-inverso"0.8180
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Predominantly Upwind639.80.9378
Predominantly Downwind603.20.9947
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low776.10.7731
Triple Number AP Medium587.51.0212
Triple Number AP High520.61.1524
Triple Number Windward/Leeward Low1045.90.5737
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Single Number Predominant Upwind667.20.8993
Single Number Predominant Reaching592.51.0126
Single Number Predominant Downwind631.50.9501
Predominant Upwind - Low937.00.6403
Predominant Upwind - Low/Med707.60.8480
Predominant Upwind - Medium617.00.9725
Predominant Upwind - Med/High573.51.0463
Predominant Upwind - High557.71.0759
Predominant Downwind Low948.40.6327
Predominant Downwind Low/Med690.00.8695
Predominant Downwind Medium579.41.0356
Predominant Downwind Med/High512.81.1700
Predominant Downwind High474.01.2659
Predominant Reaching Low840.10.7142
Predominant Reaching Low/Med633.00.9479
Predominant Reaching Medium550.51.0899
Predominant Reaching Med/High503.21.1924
Predominant Reaching High474.71.2639
SA/DSPL Upwind21.72SA/DSPL Downwind38.05
Scoring OptionTODTOT
5-Band Windward/Leeward Low1174.10.5110
5-Band Windward/Leeward Low/Med847.10.7083
5-Band Windward/Leeward Medium705.30.8507
5-Band Windward/Leeward Med/High629.90.9526
5-Band Windward/Leeward High601.20.9980
Windward/Leeward 60-40 Low1176.20.5101
Windward/Leeward 60-40 Low/Med855.60.7013
Windward/Leeward 60-40 Medium718.90.8346
Windward/Leeward 60-40 Med/High649.40.9239
Windward/Leeward 60-40 High626.00.9585
5-Band AP Low862.60.6955
5-Band AP Low/Med671.80.8932
5-Band AP Medium578.31.0375
5-Band AP Med/High527.51.1374
5-Band AP High503.41.1919
5-Band SF Bay Tour - Low1007.80.5954
5-Band SF Bay Tour - Low/Med809.90.7409
5-Band SF Bay Tour - Medium681.80.8800
5-Band SF Bay Tour - Med/High615.30.9751
5-Band SF Bay Tour - High588.91.0189
Chicago-Mac Upwind0.8701
Chicago-Mac All Purpose0.8945
Chicago-Mac Downwind0.9132
Bayview-Mac Cove Island0.6450
Bayview-Mac Shore0.6499
Harvest Moon Regatta512.61.1704
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance643.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating643.70.9321
FinRating, kevyt tuuli1155.00.8658
FinRating, kova tuuli506.30.9876
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9321
Triple Number Coastal/Long Distance Low0.7731
Triple Number Coastal/Long Distance Medium1.0213
Triple Number Coastal/Long Distance High1.1524
Triple Number Windward/Leeward Low0.6000
Triple Number Windward/Leeward Medium0.8337
Triple Number Windward/Leeward High0.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
For information
General Purpose Handicap (GPH)667.4
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low776.1
Triple Number Coastal/Long Distance Medium587.5
Triple Number Coastal/Long Distance High520.7
Triple Number Windward/Leeward Low1000.0
Triple Number Windward/Leeward Medium719.7
Triple Number Windward/Leeward High621.1
Predominantly Upwind639.8
Predominantly Downwind603.2
Predominantly Reaching578.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7731
Triple Number Coastal/Long Distance Medium1.0213
Triple Number Coastal/Long Distance High1.1524
Triple Number Windward/Leeward Low0.6000
Triple Number Windward/Leeward Medium0.8337
Triple Number Windward/Leeward High0.9660
Coastal/Long Distance0.9321
Predominantly Upwind0.9378
Predominantly Downwind0.9947
For information
General Purpose Handicap (GPH)667.4
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0142
Distanseseilas Trippeltall svak vind0.7731
Distanseseilas Trippeltall mellomvind1.0213
Distanseseilas Trippeltall sterk vind1.1524
Pølsebane Trippeltall svak vind0.6000
Pølsebane Trippeltall mellomvind0.8337
Pølsebane Trippeltall sterk vind0.9660
Motvind Singeltall0.9378
Medvind Singeltall0.9947
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Coastal/Long Distance643.70.9321
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind639.80.9378
Predominantly Downwind603.20.9947
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore589.51.0179
Cape Doctor Coastal491.31.2212
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7731
Triple Number Coastal/Long Distance Medium1.0213
Triple Number Coastal/Long Distance High1.1524
Triple Number Windward/Leeward Low0.6000
Triple Number Windward/Leeward Medium0.8337
Triple Number Windward/Leeward High0.9660
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7731
Triple Number Coastal/Long Distance Medium1.0213
Triple Number Coastal/Long Distance High1.1524
Triple Number Windward/Leeward Low0.6000
Triple Number Windward/Leeward Medium0.8337
Triple Number Windward/Leeward High0.9660
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Predominantly Upwind639.80.9378
Predominantly Downwind603.20.9947
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance643.70.9321
Triple Number Coastal/Long Distance Low776.10.7731
Triple Number Coastal/Long Distance Medium587.51.0213
Triple Number Coastal/Long Distance High520.71.1524
Triple Number Windward/Leeward Low1000.00.6000
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1682.71111.9834.5689.5605.0562.5530.4479.4463.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low776.10.7731
Triple Number AP Medium587.51.0212
Triple Number AP High520.61.1524
Triple Number Windward/Leeward Low1045.90.5737
Triple Number Windward/Leeward Medium719.70.8337
Triple Number Windward/Leeward High621.10.9660
Single Number Predominant Upwind667.20.8993
Single Number Predominant Reaching592.51.0126
Single Number Predominant Downwind631.50.9501
Predominant Upwind - Low937.00.6403
Predominant Upwind - Low/Med707.60.8480
Predominant Upwind - Medium617.00.9725
Predominant Upwind - Med/High573.51.0463
Predominant Upwind - High557.71.0759
Predominant Downwind Low948.40.6327
Predominant Downwind Low/Med690.00.8695
Predominant Downwind Medium579.41.0356
Predominant Downwind Med/High512.81.1700
Predominant Downwind High474.01.2659
Predominant Reaching Low840.10.7142
Predominant Reaching Low/Med633.00.9479
Predominant Reaching Medium550.51.0899
Predominant Reaching Med/High503.21.1924
Predominant Reaching High474.71.2639
SA/DSPL Upwind21.72SA/DSPL Downwind38.05
Scoring OptionTODTOT
5-Band Windward/Leeward Low1174.10.5110
5-Band Windward/Leeward Low/Med847.10.7083
5-Band Windward/Leeward Medium705.30.8507
5-Band Windward/Leeward Med/High629.90.9526
5-Band Windward/Leeward High601.20.9980
Windward/Leeward 60-40 Low1176.20.5101
Windward/Leeward 60-40 Low/Med855.60.7013
Windward/Leeward 60-40 Medium718.90.8346
Windward/Leeward 60-40 Med/High649.40.9239
Windward/Leeward 60-40 High626.00.9585
5-Band AP Low862.60.6955
5-Band AP Low/Med671.80.8932
5-Band AP Medium578.31.0375
5-Band AP Med/High527.51.1374
5-Band AP High503.41.1919
5-Band SF Bay Tour - Low1007.80.5954
5-Band SF Bay Tour - Low/Med809.90.7409
5-Band SF Bay Tour - Medium681.80.8800
5-Band SF Bay Tour - Med/High615.30.9751
5-Band SF Bay Tour - High588.91.0189
Chicago-Mac Upwind0.8701
Chicago-Mac All Purpose0.8945
Chicago-Mac Downwind0.9132
Bayview-Mac Cove Island0.6450
Bayview-Mac Shore0.6499
Harvest Moon Regatta512.61.1704
Club Certificate2025
SEABIRDEST 337
Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFirst 31.7Measurement12/04/2010HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.610Max. Beam3.212Draft1.925Displacement3,726Wetted area20.47IMS L9.003LSM08.904Acc. length9.610Sink (kg/mm) 15.72
VCGD0.121VCGM0.081RM Rated (kg·m) 79.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight583Declared crew weight500
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.410PBWPIPA0.0031
EDL2.550ST10.047ST20.175
ST30.175ST40.096ST50.305
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P10.780IG11.750ISP11.790MDT10.101MDL10.156MDT20.101MDL20.156TLMW0.156GO0.176
E3.890J3.490BAS1.712FSD0.026SFJ0.050SPL3.570WPLTPSBD0.108MWTMCG4.500
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date20/04/2023
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
SEABIRDEST 337
Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment1a0.160.801.462.503.2724.93
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment40.080.161.192.403.654.9611.50NoNo 27.49
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment311.8111.8111.816.856.6066.9211/04/2022211.6611.6611.666.226.0260.05
CRUISER/RACER REQUIREMENTS*
Accommodation length9.6 mTable area0.44 m²Headroom1.67 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity72 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity42 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.