Double HandedClub Certificate2025
GarfieldFin 8579
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
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 Angles41.7°41.7°40.0°39.2°38.5°38.0°37.7°37.7°39.0°
Beat VMG2.833.774.404.734.904.995.065.115.01
52°4.305.636.436.796.947.037.097.177.16
60°4.535.886.646.987.137.227.297.377.39
75°4.686.046.787.147.357.487.577.737.81
90°4.565.946.757.187.457.677.848.098.27
110°4.145.626.667.207.567.848.028.338.64
120°3.975.436.507.127.527.898.238.689.03
135°3.464.845.966.797.297.688.088.909.97
150°2.804.045.176.136.877.327.718.519.51
Run VMG2.433.504.485.326.086.687.147.888.63
Gybe Angles144.2°144.2°150.2°153.0°159.9°167.5°177.2°178.1°176.8°
APH ToD:564.2CDL: 8.969APH ToT: 1.0635CertNo:
BOAT
ClassTwostar 36DesignerHakan SodergrenBuilderAge date01/1986Series date01/1986Offset fileTWOSTAR.OFFData fileFIN8579
HULL
Length Overall10.927 mMaximum Beam3.032 mDraft2.044 mDisplacement5,570 kgDLR5.9196IMS DivisionCruiser/RacerDynamic Allowance0.040%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.410m
CREW
Maximum weight180 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail44.2345.55Headsail Luffed36.5536.55Headsail FlyingSymmetric73.7473.74Asymmetric
STORM SAIL AREAS (m²)
Trysail12.52Storm Jib8.07Heavy Weather Jib21.78
SAIL LIMITS
Headsails5Spinnakers4
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.
Double HandedClub Certificate2025
GarfieldFin 8579
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
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 VMG1272.8954.1818.2761.8735.2721.2711.4703.9718.0
52°836.5639.0559.9530.3518.4512.1507.5502.4502.7
60°794.2612.4542.1515.6504.7498.6494.0488.2486.9
75°768.8596.2530.8504.3490.0481.6475.4465.7461.2
90°789.8606.2533.2501.6483.2469.6459.1444.8435.1
110°869.0641.0540.8499.8476.4459.4448.9432.2416.9
120°906.6663.5554.1505.5478.5456.5437.4414.6398.7
135°1039.0744.3603.8530.0493.9468.6445.7404.4361.1
150°1284.2890.1696.5587.2524.3491.5467.0423.2378.6
Run VMG1483.91027.8804.1676.2592.0538.8504.0457.1417.0
Selected Courses
Windward / Leeward1375.1991.0811.1719.0663.6630.0607.7580.5567.5
All purpose1037.6763.4639.7580.7547.8527.8513.3492.9479.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward689.30.8704
All purpose564.21.0635
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7769
Downwind "popa"0.9131
70% up, 30% down "Ilhabela"0.8133
30% up, 70% down "Ilhabela-inverso"0.8675
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Predominantly Upwind606.20.9898
Predominantly Downwind572.81.0474
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low701.50.8553
Triple Number AP Medium561.51.0686
Triple Number AP High509.31.1781
Triple Number Windward/Leeward Low939.60.6386
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Single Number Predominant Upwind625.90.9586
Single Number Predominant Reaching558.31.0746
Single Number Predominant Downwind597.31.0046
Predominant Upwind - Low815.30.7359
Predominant Upwind - Low/Med650.30.9226
Predominant Upwind - Medium591.51.0144
Predominant Upwind - Med/High560.21.0710
Predominant Upwind - High545.51.0999
Predominant Downwind Low862.20.6959
Predominant Downwind Low/Med645.70.9292
Predominant Downwind Medium554.31.0824
Predominant Downwind Med/High496.91.2074
Predominant Downwind High462.81.2963
Predominant Reaching Low747.30.8029
Predominant Reaching Low/Med587.91.0205
Predominant Reaching Medium526.81.1389
Predominant Reaching Med/High489.41.2260
Predominant Reaching High466.31.2866
SA/DSPL Upwind25.56SA/DSPL Downwind37.33
Scoring OptionTODTOT
5-Band Windward/Leeward Low1042.80.5753
5-Band Windward/Leeward Low/Med783.40.7659
5-Band Windward/Leeward Medium674.80.8891
5-Band Windward/Leeward Med/High611.60.9811
5-Band Windward/Leeward High582.91.0293
Windward/Leeward 60-40 Low1034.20.5801
Windward/Leeward 60-40 Low/Med787.90.7615
Windward/Leeward 60-40 Medium688.30.8717
Windward/Leeward 60-40 Med/High632.00.9493
Windward/Leeward 60-40 High607.90.9871
5-Band AP Low774.50.7747
5-Band AP Low/Med623.60.9622
5-Band AP Medium554.71.0817
5-Band AP Med/High515.21.1645
5-Band AP High494.21.2141
5-Band SF Bay Tour - Low898.90.6675
5-Band SF Bay Tour - Low/Med748.20.8019
5-Band SF Bay Tour - Medium653.20.9185
5-Band SF Bay Tour - Med/High599.21.0014
5-Band SF Bay Tour - High573.31.0466
Chicago-Mac Upwind0.9340
Chicago-Mac All Purpose0.9551
Chicago-Mac Downwind0.9692
Bayview-Mac Cove Island0.7158
Bayview-Mac Shore0.7228
Harvest Moon Regatta493.01.2170
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance612.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating612.70.9793
FinRating, kevyt tuuli1024.90.9757
FinRating, kova tuuli497.61.0048
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9793
Triple Number Coastal/Long Distance Low0.8553
Triple Number Coastal/Long Distance Medium1.0687
Triple Number Coastal/Long Distance High1.1781
Triple Number Windward/Leeward Low0.6659
Triple Number Windward/Leeward Medium0.8747
Triple Number Windward/Leeward High0.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
For information
General Purpose Handicap (GPH)628.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low701.5
Triple Number Coastal/Long Distance Medium561.4
Triple Number Coastal/Long Distance High509.3
Triple Number Windward/Leeward Low901.0
Triple Number Windward/Leeward Medium685.9
Triple Number Windward/Leeward High603.1
Predominantly Upwind606.2
Predominantly Downwind572.8
Predominantly Reaching549.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8553
Triple Number Coastal/Long Distance Medium1.0687
Triple Number Coastal/Long Distance High1.1781
Triple Number Windward/Leeward Low0.6659
Triple Number Windward/Leeward Medium0.8747
Triple Number Windward/Leeward High0.9949
Coastal/Long Distance0.9793
Predominantly Upwind0.9898
Predominantly Downwind1.0474
For information
General Purpose Handicap (GPH)628.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0635
Distanseseilas Trippeltall svak vind0.8553
Distanseseilas Trippeltall mellomvind1.0687
Distanseseilas Trippeltall sterk vind1.1781
Pølsebane Trippeltall svak vind0.6659
Pølsebane Trippeltall mellomvind0.8747
Pølsebane Trippeltall sterk vind0.9949
Motvind Singeltall0.9898
Medvind Singeltall1.0474
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Coastal/Long Distance612.70.9793
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind606.20.9898
Predominantly Downwind572.81.0474
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore571.41.0501
Cape Doctor Coastal483.61.2406
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8553
Triple Number Coastal/Long Distance Medium1.0687
Triple Number Coastal/Long Distance High1.1781
Triple Number Windward/Leeward Low0.6659
Triple Number Windward/Leeward Medium0.8747
Triple Number Windward/Leeward High0.9949
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8553
Triple Number Coastal/Long Distance Medium1.0687
Triple Number Coastal/Long Distance High1.1781
Triple Number Windward/Leeward Low0.6659
Triple Number Windward/Leeward Medium0.8747
Triple Number Windward/Leeward High0.9949
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Predominantly Upwind606.20.9898
Predominantly Downwind572.81.0474
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.70.9793
Triple Number Coastal/Long Distance Low701.50.8553
Triple Number Coastal/Long Distance Medium561.41.0687
Triple Number Coastal/Long Distance High509.31.1781
Triple Number Windward/Leeward Low901.00.6659
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1471.2994.6765.2651.1583.8547.2517.9473.1459.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low701.50.8553
Triple Number AP Medium561.51.0686
Triple Number AP High509.31.1781
Triple Number Windward/Leeward Low939.60.6386
Triple Number Windward/Leeward Medium685.90.8747
Triple Number Windward/Leeward High603.10.9949
Single Number Predominant Upwind625.90.9586
Single Number Predominant Reaching558.31.0746
Single Number Predominant Downwind597.31.0046
Predominant Upwind - Low815.30.7359
Predominant Upwind - Low/Med650.30.9226
Predominant Upwind - Medium591.51.0144
Predominant Upwind - Med/High560.21.0710
Predominant Upwind - High545.51.0999
Predominant Downwind Low862.20.6959
Predominant Downwind Low/Med645.70.9292
Predominant Downwind Medium554.31.0824
Predominant Downwind Med/High496.91.2074
Predominant Downwind High462.81.2963
Predominant Reaching Low747.30.8029
Predominant Reaching Low/Med587.91.0205
Predominant Reaching Medium526.81.1389
Predominant Reaching Med/High489.41.2260
Predominant Reaching High466.31.2866
SA/DSPL Upwind25.56SA/DSPL Downwind37.33
Scoring OptionTODTOT
5-Band Windward/Leeward Low1042.80.5753
5-Band Windward/Leeward Low/Med783.40.7659
5-Band Windward/Leeward Medium674.80.8891
5-Band Windward/Leeward Med/High611.60.9811
5-Band Windward/Leeward High582.91.0293
Windward/Leeward 60-40 Low1034.20.5801
Windward/Leeward 60-40 Low/Med787.90.7615
Windward/Leeward 60-40 Medium688.30.8717
Windward/Leeward 60-40 Med/High632.00.9493
Windward/Leeward 60-40 High607.90.9871
5-Band AP Low774.50.7747
5-Band AP Low/Med623.60.9622
5-Band AP Medium554.71.0817
5-Band AP Med/High515.21.1645
5-Band AP High494.21.2141
5-Band SF Bay Tour - Low898.90.6675
5-Band SF Bay Tour - Low/Med748.20.8019
5-Band SF Bay Tour - Medium653.20.9185
5-Band SF Bay Tour - Med/High599.21.0014
5-Band SF Bay Tour - High573.31.0466
Chicago-Mac Upwind0.9340
Chicago-Mac All Purpose0.9551
Chicago-Mac Downwind0.9692
Bayview-Mac Cove Island0.7158
Bayview-Mac Shore0.7228
Harvest Moon Regatta493.01.2170
Double HandedClub Certificate2025
GarfieldFin 8579
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassTwostar 36Measurement26/05/2021HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.927Max. Beam3.032Draft2.044Displacement5,570Wetted area25.44IMS L9.687LSM09.798Acc. length9.854Sink (kg/mm) 18.26
VCGD-0.119VCGM-0.117RM Rated (kg·m) 113.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight180
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.410PBWPIPA0.0016
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays2CheckstaysSpreaders2Rotating mastNo
P13.650IG12.700ISP12.700MDT10.120MDL10.166MDT2MDL2TLTaperMWGO
E5.240J3.750BAS1.500FSDFoilSFJSPL3.720WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date26/05/2021
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
GarfieldFin 8579
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.171.212.103.524.6044.23
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.050.711.442.884.315.7512.70NoNo 36.55
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment212.5912.5912.597.066.9073.74
CRUISER/RACER REQUIREMENTS*
Accommodation length9.9 mTable area0.44 m²Headroom1.70 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity78 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity48 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.