Double HandedClub Certificate2025
BEST WINDITA-BSTW25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
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 Angles42.8°42.8°40.2°38.7°38.2°38.0°38.0°39.9°44.1°
Beat VMG2.393.243.834.074.184.254.284.203.92
52°3.764.895.535.775.906.016.096.166.01
60°4.005.115.685.966.126.256.356.476.41
75°4.165.255.786.186.446.626.787.027.13
90°4.095.185.756.236.676.987.267.768.16
110°3.684.855.586.046.547.097.939.5210.63
120°3.354.545.385.866.336.847.4910.6112.08
135°2.783.924.875.525.966.416.918.6612.38
150°2.283.314.275.055.606.026.437.4910.28
Run VMG1.962.873.734.545.225.716.147.088.90
Gybe Angles147.1°147.1°173.0°180.0°180.0°179.8°180.0°179.1°140.6°
APH ToD:659.2CDL: 5.703APH ToT: 0.9102CertNo:25/1
BOAT
ClassStarDesignerSweisguthBuilderFolliAge date06/1989Series date06/1989Offset fileSTAR1B.OFFData fileBSTW25
HULL
Length Overall6.920 mMaximum Beam1.718 mDraft0.975 mDisplacement662 kgDLR6.0887IMS DivisionSportboatDynamic Allowance0.070%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight190 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail24.3525.27Headsail Luffed5.805.80Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail7.17Storm Jib2.39Heavy Weather Jib6.43
SAIL LIMITS
Headsails5Spinnakers0
✱ No spinnaker pole aboard
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
BEST WINDITA-BSTW25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
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 VMG1509.01110.5939.2884.7860.8847.6840.4856.8918.8
52°957.8735.8650.7624.3609.9599.4591.3584.9599.0
60°900.2704.5633.6604.4588.3576.4567.3556.4561.5
75°864.4686.0623.0582.8559.4543.9531.2512.6504.8
90°880.4694.4625.6577.8539.5516.1496.1463.8441.3
110°978.1742.8645.1595.9550.3507.5453.7378.0338.6
120°1073.4792.3668.8613.9568.7526.0480.8339.2298.0
135°1296.7918.3739.2652.5604.5562.1520.9415.9290.7
150°1581.81086.3843.6712.9642.9598.4560.3480.9350.2
Run VMG1835.71254.4964.4792.6689.8630.0586.0508.6404.4
Selected Courses
Windward / Leeward1670.11182.5951.8838.7775.3738.8713.2682.7661.6
All purpose1228.7902.4755.0684.6642.6613.8588.3545.4516.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward807.80.7427
All purpose659.20.9102
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6625
Downwind "popa"0.7741
70% up, 30% down "Ilhabela"0.6924
30% up, 70% down "Ilhabela-inverso"0.7368
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Predominantly Upwind708.20.8473
Predominantly Downwind675.70.8880
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low828.70.7240
Triple Number AP Medium658.80.9107
Triple Number AP High578.61.0370
Triple Number Windward/Leeward Low1116.30.5375
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Single Number Predominant Upwind731.50.8202
Single Number Predominant Reaching648.30.9255
Single Number Predominant Downwind702.50.8541
Predominant Upwind - Low956.60.6272
Predominant Upwind - Low/Med761.10.7883
Predominant Upwind - Medium691.50.8676
Predominant Upwind - Med/High651.10.9215
Predominant Upwind - High632.30.9490
Predominant Downwind Low1040.50.5766
Predominant Downwind Low/Med770.00.7793
Predominant Downwind Medium653.40.9183
Predominant Downwind Med/High571.91.0491
Predominant Downwind High505.21.1876
Predominant Reaching Low884.30.6785
Predominant Reaching Low/Med694.40.8641
Predominant Reaching Medium614.50.9764
Predominant Reaching Med/High555.51.0801
Predominant Reaching High507.81.1816
SA/DSPL Upwind39.77SA/DSPL Downwind39.77
Scoring OptionTODTOT
5-Band Windward/Leeward Low1247.30.4810
5-Band Windward/Leeward Low/Med919.80.6523
5-Band Windward/Leeward Medium789.30.7602
5-Band Windward/Leeward Med/High717.60.8361
5-Band Windward/Leeward High684.30.8768
Windward/Leeward 60-40 Low1231.30.4873
Windward/Leeward 60-40 Low/Med922.60.6503
Windward/Leeward 60-40 Medium804.90.7455
Windward/Leeward 60-40 Med/High743.30.8072
Windward/Leeward 60-40 High720.40.8329
5-Band AP Low916.70.6545
5-Band AP Low/Med735.30.8160
5-Band AP Medium649.60.9236
5-Band AP Med/High590.01.0170
5-Band AP High547.91.0951
5-Band SF Bay Tour - Low1067.80.5619
5-Band SF Bay Tour - Low/Med881.30.6808
5-Band SF Bay Tour - Medium768.20.7810
5-Band SF Bay Tour - Med/High703.20.8532
5-Band SF Bay Tour - High668.10.8981
Chicago-Mac Upwind0.7986
Chicago-Mac All Purpose0.8144
Chicago-Mac Downwind0.8207
Bayview-Mac Cove Island0.6019
Bayview-Mac Shore0.6090
Harvest Moon Regatta559.81.0718
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance716.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating716.50.8374
FinRating, kevyt tuuli1226.20.8155
FinRating, kova tuuli545.40.9168
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8374
Triple Number Coastal/Long Distance Low0.7240
Triple Number Coastal/Long Distance Medium0.9108
Triple Number Coastal/Long Distance High1.0370
Triple Number Windward/Leeward Low0.5623
Triple Number Windward/Leeward Medium0.7481
Triple Number Windward/Leeward High0.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
For information
General Purpose Handicap (GPH)736.1
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low828.7
Triple Number Coastal/Long Distance Medium658.8
Triple Number Coastal/Long Distance High578.6
Triple Number Windward/Leeward Low1067.0
Triple Number Windward/Leeward Medium802.0
Triple Number Windward/Leeward High708.1
Predominantly Upwind708.2
Predominantly Downwind675.7
Predominantly Reaching642.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7240
Triple Number Coastal/Long Distance Medium0.9108
Triple Number Coastal/Long Distance High1.0370
Triple Number Windward/Leeward Low0.5623
Triple Number Windward/Leeward Medium0.7481
Triple Number Windward/Leeward High0.8473
Coastal/Long Distance0.8374
Predominantly Upwind0.8473
Predominantly Downwind0.8880
For information
General Purpose Handicap (GPH)736.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9102
Distanseseilas Trippeltall svak vind0.7240
Distanseseilas Trippeltall mellomvind0.9108
Distanseseilas Trippeltall sterk vind1.0370
Pølsebane Trippeltall svak vind0.5623
Pølsebane Trippeltall mellomvind0.7481
Pølsebane Trippeltall sterk vind0.8473
Motvind Singeltall0.8473
Medvind Singeltall0.8880
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Coastal/Long Distance716.50.8374
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind708.20.8473
Predominantly Downwind675.70.8880
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore667.90.8983
Cape Doctor Coastal525.31.1423
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7240
Triple Number Coastal/Long Distance Medium0.9108
Triple Number Coastal/Long Distance High1.0370
Triple Number Windward/Leeward Low0.5623
Triple Number Windward/Leeward Medium0.7481
Triple Number Windward/Leeward High0.8473
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7240
Triple Number Coastal/Long Distance Medium0.9108
Triple Number Coastal/Long Distance High1.0370
Triple Number Windward/Leeward Low0.5623
Triple Number Windward/Leeward Medium0.7481
Triple Number Windward/Leeward High0.8473
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Predominantly Upwind708.20.8473
Predominantly Downwind675.70.8880
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance716.50.8374
Triple Number Coastal/Long Distance Low828.70.7240
Triple Number Coastal/Long Distance Medium658.80.9108
Triple Number Coastal/Long Distance High578.61.0370
Triple Number Windward/Leeward Low1067.00.5623
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1797.31189.7900.0764.1685.7637.8594.7501.3470.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low828.70.7240
Triple Number AP Medium658.80.9107
Triple Number AP High578.61.0370
Triple Number Windward/Leeward Low1116.30.5375
Triple Number Windward/Leeward Medium802.00.7481
Triple Number Windward/Leeward High708.10.8473
Single Number Predominant Upwind731.50.8202
Single Number Predominant Reaching648.30.9255
Single Number Predominant Downwind702.50.8541
Predominant Upwind - Low956.60.6272
Predominant Upwind - Low/Med761.10.7883
Predominant Upwind - Medium691.50.8676
Predominant Upwind - Med/High651.10.9215
Predominant Upwind - High632.30.9490
Predominant Downwind Low1040.50.5766
Predominant Downwind Low/Med770.00.7793
Predominant Downwind Medium653.40.9183
Predominant Downwind Med/High571.91.0491
Predominant Downwind High505.21.1876
Predominant Reaching Low884.30.6785
Predominant Reaching Low/Med694.40.8641
Predominant Reaching Medium614.50.9764
Predominant Reaching Med/High555.51.0801
Predominant Reaching High507.81.1816
SA/DSPL Upwind39.77SA/DSPL Downwind39.77
Scoring OptionTODTOT
5-Band Windward/Leeward Low1247.30.4810
5-Band Windward/Leeward Low/Med919.80.6523
5-Band Windward/Leeward Medium789.30.7602
5-Band Windward/Leeward Med/High717.60.8361
5-Band Windward/Leeward High684.30.8768
Windward/Leeward 60-40 Low1231.30.4873
Windward/Leeward 60-40 Low/Med922.60.6503
Windward/Leeward 60-40 Medium804.90.7455
Windward/Leeward 60-40 Med/High743.30.8072
Windward/Leeward 60-40 High720.40.8329
5-Band AP Low916.70.6545
5-Band AP Low/Med735.30.8160
5-Band AP Medium649.60.9236
5-Band AP Med/High590.01.0170
5-Band AP High547.91.0951
5-Band SF Bay Tour - Low1067.80.5619
5-Band SF Bay Tour - Low/Med881.30.6808
5-Band SF Bay Tour - Medium768.20.7810
5-Band SF Bay Tour - Med/High703.20.8532
5-Band SF Bay Tour - High668.10.8981
Chicago-Mac Upwind0.7986
Chicago-Mac All Purpose0.8144
Chicago-Mac Downwind0.8207
Bayview-Mac Cove Island0.6019
Bayview-Mac Shore0.6090
Harvest Moon Regatta559.81.0718
Double HandedClub Certificate2025
BEST WINDITA-BSTW25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassStarMeasurement12/02/2013HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA6.920Max. Beam1.718Draft0.975Displacement662Wetted area8.74IMS L5.388LSM04.772Acc. length5.583Sink (kg/mm) 5.72
VCGD-0.500VCGM-0.461RM Rated (kg·m) 16.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight190
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1Checkstays1Spreaders1Rotating mastNo
P9.300IG6.900ISP6.910MDT10.080MDL10.100MDT20.040MDL20.040TL1.680MW0.100GO0.100
E4.400J2.000BAS0.380FSDNo FoilSFJSPLWPLTPSBD0.100MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.500Flotation Date23/08/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
BEST WINDITA-BSTW25
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.150.951.672.813.7024.3522/08/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.000.000.000.000.001.816.30NoNo 5.8022/08/2025