Club Certificate2025
CastorEST F39
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 Angles44.2°44.2°42.3°41.4°40.4°40.2°40.1°40.7°41.7°
Beat VMG1.772.452.993.373.633.773.833.873.82
52°2.773.764.495.005.305.465.555.625.63
60°2.943.964.695.185.475.645.745.825.85
75°3.014.124.945.415.655.825.966.126.19
90°3.214.355.175.645.916.086.186.366.51
110°3.164.295.125.615.936.206.446.827.05
120°2.984.104.955.515.856.136.406.927.40
135°2.583.614.505.235.665.956.236.787.42
150°2.183.154.034.785.375.736.006.527.09
Run VMG1.872.733.524.214.855.345.696.196.68
Gybe Angles151.1°151.1°157.5°162.2°166.7°176.6°179.0°179.0°178.9°
APH ToD:742.5CDL: 5.246APH ToT: 0.8080CertNo:
BOAT
ClassFOLKBOATDesignerBuilderAge date01/1969Series date01/1941Offset fileG1746.OFFData fileEST F39
HULL
Length Overall7.680 mMaximum Beam2.210 mDraft1.129 mDisplacement1,930 kgDLR10.6307IMS DivisionPerformanceDynamic Allowance0.560%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight300 kg(declared)Minimum weight170 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.25 m
SAIL AREAS (m²)
MeasuredRatedMainsail17.8918.51Headsail Luffed7.307.30Headsail FlyingSymmetric23.9423.94Asymmetric
STORM SAIL AREAS (m²)
Trysail5.18Storm Jib2.12Heavy Weather Jib5.71
SAIL LIMITS
Headsails5
✱ Woven polyester sails
Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
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  04340003R74Issued on 14/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
CastorEST F39
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 VMG2036.61470.51205.61069.0990.6954.8939.6930.8942.0
52°1302.0958.1801.0720.5679.6658.8649.0640.2639.1
60°1223.6909.2767.8694.5658.0638.2627.5618.1614.9
75°1195.0874.2729.3665.7637.5618.1603.6588.3581.2
90°1122.1827.0695.8638.4609.7592.4582.8566.2552.7
110°1139.4838.5703.5641.2607.1580.9559.2528.2511.0
120°1208.3878.6726.7653.3615.3587.1562.2520.5486.2
135°1395.1995.9800.8688.2636.4604.7578.3531.3485.0
150°1648.01142.0893.6753.4670.7628.4599.7552.0508.0
Run VMG1923.21317.81021.5855.1741.8674.5633.1581.1538.6
Selected Courses
Windward / Leeward1977.71394.11113.6962.1866.2814.7786.3756.0740.3
All purpose1490.71071.4873.6770.5712.2680.2660.6634.9618.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward912.70.6574
All purpose742.50.8080
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.5555
Downwind "popa"0.7210
70% up, 30% down "Ilhabela"0.5966
30% up, 70% down "Ilhabela-inverso"0.6619
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Predominantly Upwind812.40.7386
Predominantly Downwind744.50.8059
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low972.50.6169
Triple Number AP Medium737.20.8139
Triple Number AP High655.90.9148
Triple Number Windward/Leeward Low1311.30.4576
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Single Number Predominant Upwind847.60.7079
Single Number Predominant Reaching735.80.8155
Single Number Predominant Downwind780.10.7691
Predominant Upwind - Low1193.30.5028
Predominant Upwind - Low/Med900.90.6660
Predominant Upwind - Medium783.30.7660
Predominant Upwind - Med/High726.50.8258
Predominant Upwind - High707.20.8484
Predominant Downwind Low1166.80.5142
Predominant Downwind Low/Med850.20.7057
Predominant Downwind Medium714.20.8401
Predominant Downwind Med/High636.90.9421
Predominant Downwind High597.51.0042
Predominant Reaching Low1039.10.5774
Predominant Reaching Low/Med784.00.7653
Predominant Reaching Medium682.10.8796
Predominant Reaching Med/High628.30.9549
Predominant Reaching High601.00.9983
SA/DSPL Upwind16.21SA/DSPL Downwind26.93
Scoring OptionTODTOT
5-Band Windward/Leeward Low1470.40.4080
5-Band Windward/Leeward Low/Med1065.00.5634
5-Band Windward/Leeward Medium887.60.6760
5-Band Windward/Leeward Med/High792.70.7569
5-Band Windward/Leeward High758.50.7910
Windward/Leeward 60-40 Low1485.50.4039
Windward/Leeward 60-40 Low/Med1084.90.5530
Windward/Leeward 60-40 Medium912.40.6576
Windward/Leeward 60-40 Med/High823.10.7289
Windward/Leeward 60-40 High793.70.7560
5-Band AP Low1074.10.5586
5-Band AP Low/Med842.60.7121
5-Band AP Medium725.70.8268
5-Band AP Med/High663.90.9037
5-Band AP High636.60.9426
5-Band SF Bay Tour - Low1269.80.4725
5-Band SF Bay Tour - Low/Med1024.30.5857
5-Band SF Bay Tour - Medium863.70.6947
5-Band SF Bay Tour - Med/High779.90.7693
5-Band SF Bay Tour - High748.40.8017
Chicago-Mac Upwind0.6839
Chicago-Mac All Purpose0.7150
Chicago-Mac Downwind0.7407
Bayview-Mac Cove Island0.5146
Bayview-Mac Shore0.5186
Harvest Moon Regatta637.20.9416
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance808.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating808.40.7422
FinRating, kevyt tuuli1441.40.6937
FinRating, kova tuuli639.60.7817
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.7422
Triple Number Coastal/Long Distance Low0.6169
Triple Number Coastal/Long Distance Medium0.8140
Triple Number Coastal/Long Distance High0.9148
Triple Number Windward/Leeward Low0.4785
Triple Number Windward/Leeward Medium0.6623
Triple Number Windward/Leeward High0.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
For information
General Purpose Handicap (GPH)837.3
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low972.6
Triple Number Coastal/Long Distance Medium737.1
Triple Number Coastal/Long Distance High655.9
Triple Number Windward/Leeward Low1253.9
Triple Number Windward/Leeward Medium905.9
Triple Number Windward/Leeward High782.1
Predominantly Upwind812.4
Predominantly Downwind744.5
Predominantly Reaching715.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6169
Triple Number Coastal/Long Distance Medium0.8140
Triple Number Coastal/Long Distance High0.9148
Triple Number Windward/Leeward Low0.4785
Triple Number Windward/Leeward Medium0.6623
Triple Number Windward/Leeward High0.7672
Coastal/Long Distance0.7422
Predominantly Upwind0.7386
Predominantly Downwind0.8059
For information
General Purpose Handicap (GPH)837.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8080
Distanseseilas Trippeltall svak vind0.6169
Distanseseilas Trippeltall mellomvind0.8140
Distanseseilas Trippeltall sterk vind0.9148
Pølsebane Trippeltall svak vind0.4785
Pølsebane Trippeltall mellomvind0.6623
Pølsebane Trippeltall sterk vind0.7672
Motvind Singeltall0.7386
Medvind Singeltall0.8059
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Coastal/Long Distance808.40.7422
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind812.40.7386
Predominantly Downwind744.50.8059
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore745.00.8054
Cape Doctor Coastal623.50.9622
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6169
Triple Number Coastal/Long Distance Medium0.8140
Triple Number Coastal/Long Distance High0.9148
Triple Number Windward/Leeward Low0.4785
Triple Number Windward/Leeward Medium0.6623
Triple Number Windward/Leeward High0.7672
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6169
Triple Number Coastal/Long Distance Medium0.8140
Triple Number Coastal/Long Distance High0.9148
Triple Number Windward/Leeward Low0.4785
Triple Number Windward/Leeward Medium0.6623
Triple Number Windward/Leeward High0.7672
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Predominantly Upwind812.40.7386
Predominantly Downwind744.50.8059
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance808.40.7422
Triple Number Coastal/Long Distance Low972.60.6169
Triple Number Coastal/Long Distance Medium737.10.8140
Triple Number Coastal/Long Distance High655.90.9148
Triple Number Windward/Leeward Low1253.90.4785
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2090.21386.51045.0867.3761.0705.8666.6604.3584.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low972.50.6169
Triple Number AP Medium737.20.8139
Triple Number AP High655.90.9148
Triple Number Windward/Leeward Low1311.30.4576
Triple Number Windward/Leeward Medium905.90.6623
Triple Number Windward/Leeward High782.10.7672
Single Number Predominant Upwind847.60.7079
Single Number Predominant Reaching735.80.8155
Single Number Predominant Downwind780.10.7691
Predominant Upwind - Low1193.30.5028
Predominant Upwind - Low/Med900.90.6660
Predominant Upwind - Medium783.30.7660
Predominant Upwind - Med/High726.50.8258
Predominant Upwind - High707.20.8484
Predominant Downwind Low1166.80.5142
Predominant Downwind Low/Med850.20.7057
Predominant Downwind Medium714.20.8401
Predominant Downwind Med/High636.90.9421
Predominant Downwind High597.51.0042
Predominant Reaching Low1039.10.5774
Predominant Reaching Low/Med784.00.7653
Predominant Reaching Medium682.10.8796
Predominant Reaching Med/High628.30.9549
Predominant Reaching High601.00.9983
SA/DSPL Upwind16.21SA/DSPL Downwind26.93
Scoring OptionTODTOT
5-Band Windward/Leeward Low1470.40.4080
5-Band Windward/Leeward Low/Med1065.00.5634
5-Band Windward/Leeward Medium887.60.6760
5-Band Windward/Leeward Med/High792.70.7569
5-Band Windward/Leeward High758.50.7910
Windward/Leeward 60-40 Low1485.50.4039
Windward/Leeward 60-40 Low/Med1084.90.5530
Windward/Leeward 60-40 Medium912.40.6576
Windward/Leeward 60-40 Med/High823.10.7289
Windward/Leeward 60-40 High793.70.7560
5-Band AP Low1074.10.5586
5-Band AP Low/Med842.60.7121
5-Band AP Medium725.70.8268
5-Band AP Med/High663.90.9037
5-Band AP High636.60.9426
5-Band SF Bay Tour - Low1269.80.4725
5-Band SF Bay Tour - Low/Med1024.30.5857
5-Band SF Bay Tour - Medium863.70.6947
5-Band SF Bay Tour - Med/High779.90.7693
5-Band SF Bay Tour - High748.40.8017
Chicago-Mac Upwind0.6839
Chicago-Mac All Purpose0.7150
Chicago-Mac Downwind0.7407
Bayview-Mac Cove Island0.5146
Bayview-Mac Shore0.5186
Harvest Moon Regatta637.20.9416
ORC Ref  04340003R74Issued on 14/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
CastorEST F39
Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFOLKBOATMeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA7.680Max. Beam2.210Draft1.129Displacement1,930Wetted area13.57IMS L5.948LSM05.662Acc. length7.183Sink (kg/mm) 7.20
VCGD-0.210VCGM-0.192RM Rated (kg·m) 19.2Limit of positive stability(°) N/AStability IndexN/ADefault crew weight306Declared crew weight300
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P8.750IG6.500ISP6.510MDT10.110MDL10.133MDT20.000MDL20.000TLTaperMW0.000GO0.000
E3.380J2.000BAS1.000FSDNo FoilSFJ0.830SPL2.120WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date07/05/2024
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04340003R74Issued on 14/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
CastorEST F39
Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20.110.721.322.222.8917.8930/07/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20.040.350.681.241.812.365.95NoNo 7.3030/07/2023
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment16.806.806.804.244.1623.94* Copied from legacy *
ORC Ref  04340003R74Issued on 14/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org