Double HandedClub Certificate2025
PAPERISSIMAITA-17612
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 Angles41.7°41.7°40.1°39.6°39.4°39.3°39.3°39.4°40.4°
Beat VMG2.423.213.754.074.224.314.374.414.38
52°3.674.795.475.866.066.166.246.326.34
60°3.875.015.666.046.246.366.446.556.60
75°4.005.165.816.206.456.636.766.947.04
90°3.905.125.886.316.546.807.017.307.49
110°3.905.155.966.446.817.137.357.667.79
120°3.734.995.846.376.787.157.498.038.39
135°3.294.505.436.096.546.957.358.179.18
150°2.723.864.845.636.196.607.007.798.76
Run VMG2.353.344.204.945.586.086.487.217.96
Gybe Angles147.6°147.6°153.0°158.5°165.5°172.7°177.7°178.1°176.6°
APH ToD:636.8CDL: 6.531APH ToT: 0.9421CertNo:25/1
BOAT
ClassDuck 31DesignerPaperiniBuilderAvalloneAge date02/1992Series date02/1982Offset fileDUCK31.OFFData fileI17612
HULL
Length Overall9.120 mMaximum Beam3.248 mDraft1.776 mDisplacement2,747 kgDLR9.6112IMS DivisionPerformanceDynamic Allowance0.100%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0.300m
CREW
Maximum weight170 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail30.6831.50Headsail Luffed19.5519.55Headsail FlyingSymmetric52.7952.79Asymmetric
STORM SAIL AREAS (m²)
Trysail8.71Storm Jib5.73Heavy Weather Jib15.46
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.
Double HandedClub Certificate2025
PAPERISSIMAITA-17612
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 VMG1489.91119.9960.2885.5852.2835.3824.6815.6821.0
52°981.3751.3657.9614.6594.1584.1577.3569.9567.8
60°931.4719.2635.7596.5576.7565.8558.6549.6545.7
75°899.7697.6619.2580.9558.4542.9532.2518.8511.2
90°922.9702.9611.8570.4550.2529.7513.9493.1480.5
110°923.0698.4603.8559.2528.5505.0489.6470.0462.0
120°964.8722.0616.4565.4531.3503.4480.7448.4429.2
135°1092.9799.2663.1591.3550.6517.8489.8440.8392.3
150°1323.8933.3743.9639.9582.0545.4514.3461.9410.8
Run VMG1531.91077.7856.2728.5645.2592.2555.6499.1452.0
Selected Courses
Windward / Leeward1508.31098.8908.2807.0748.7713.8690.1657.3636.5
All purpose1150.5855.4723.7656.9619.7595.4577.6552.1534.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward776.40.7728
All purpose636.80.9421
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6674
Downwind "popa"0.8477
70% up, 30% down "Ilhabela"0.7129
30% up, 70% down "Ilhabela-inverso"0.7841
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Predominantly Upwind693.80.8647
Predominantly Downwind637.50.9412
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low789.50.7599
Triple Number AP Medium634.70.9453
Triple Number AP High572.51.0481
Triple Number Windward/Leeward Low1044.10.5746
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Single Number Predominant Upwind715.50.8385
Single Number Predominant Reaching628.90.9541
Single Number Predominant Downwind661.30.9074
Predominant Upwind - Low935.60.6413
Predominant Upwind - Low/Med747.00.8032
Predominant Upwind - Medium676.40.8870
Predominant Upwind - Med/High637.70.9409
Predominant Upwind - High618.60.9699
Predominant Downwind Low939.10.6389
Predominant Downwind Low/Med714.80.8394
Predominant Downwind Medium618.10.9707
Predominant Downwind Med/High553.41.0841
Predominant Downwind High512.51.1706
Predominant Reaching Low840.20.7141
Predominant Reaching Low/Med664.90.9024
Predominant Reaching Medium595.21.0081
Predominant Reaching Med/High548.81.0932
Predominant Reaching High519.61.1547
SA/DSPL Upwind25.52SA/DSPL Downwind42.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1154.20.5199
5-Band Windward/Leeward Low/Med877.00.6841
5-Band Windward/Leeward Medium760.90.7885
5-Band Windward/Leeward Med/High693.50.8652
5-Band Windward/Leeward High659.40.9099
Windward/Leeward 60-40 Low1157.80.5182
Windward/Leeward 60-40 Low/Med889.90.6742
Windward/Leeward 60-40 Medium781.10.7682
Windward/Leeward 60-40 Med/High720.20.8331
Windward/Leeward 60-40 High691.10.8681
5-Band AP Low861.90.6961
5-Band AP Low/Med704.20.8521
5-Band AP Medium626.90.9571
5-Band AP Med/High579.81.0348
5-Band AP High553.51.0840
5-Band SF Bay Tour - Low1004.80.5972
5-Band SF Bay Tour - Low/Med842.70.7120
5-Band SF Bay Tour - Medium739.70.8111
5-Band SF Bay Tour - Med/High680.10.8823
5-Band SF Bay Tour - High648.70.9249
Chicago-Mac Upwind0.8158
Chicago-Mac All Purpose0.8479
Chicago-Mac Downwind0.8761
Bayview-Mac Cove Island0.6408
Bayview-Mac Shore0.6454
Harvest Moon Regatta551.41.0881
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance690.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating690.40.8691
FinRating, kevyt tuuli1132.60.8829
FinRating, kova tuuli555.90.8995
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8691
Triple Number Coastal/Long Distance Low0.7599
Triple Number Coastal/Long Distance Medium0.9454
Triple Number Coastal/Long Distance High1.0481
Triple Number Windward/Leeward Low0.5979
Triple Number Windward/Leeward Medium0.7765
Triple Number Windward/Leeward High0.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
For information
General Purpose Handicap (GPH)708.1
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low789.6
Triple Number Coastal/Long Distance Medium634.7
Triple Number Coastal/Long Distance High572.5
Triple Number Windward/Leeward Low1003.5
Triple Number Windward/Leeward Medium772.7
Triple Number Windward/Leeward High683.8
Predominantly Upwind693.8
Predominantly Downwind637.5
Predominantly Reaching616.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7599
Triple Number Coastal/Long Distance Medium0.9454
Triple Number Coastal/Long Distance High1.0481
Triple Number Windward/Leeward Low0.5979
Triple Number Windward/Leeward Medium0.7765
Triple Number Windward/Leeward High0.8775
Coastal/Long Distance0.8691
Predominantly Upwind0.8647
Predominantly Downwind0.9412
For information
General Purpose Handicap (GPH)708.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9421
Distanseseilas Trippeltall svak vind0.7599
Distanseseilas Trippeltall mellomvind0.9454
Distanseseilas Trippeltall sterk vind1.0481
Pølsebane Trippeltall svak vind0.5979
Pølsebane Trippeltall mellomvind0.7765
Pølsebane Trippeltall sterk vind0.8775
Motvind Singeltall0.8647
Medvind Singeltall0.9412
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Coastal/Long Distance690.40.8691
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind693.80.8647
Predominantly Downwind637.50.9412
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore642.80.9335
Cape Doctor Coastal540.01.1112
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7599
Triple Number Coastal/Long Distance Medium0.9454
Triple Number Coastal/Long Distance High1.0481
Triple Number Windward/Leeward Low0.5979
Triple Number Windward/Leeward Medium0.7765
Triple Number Windward/Leeward High0.8775
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7599
Triple Number Coastal/Long Distance Medium0.9454
Triple Number Coastal/Long Distance High1.0481
Triple Number Windward/Leeward Low0.5979
Triple Number Windward/Leeward Medium0.7765
Triple Number Windward/Leeward High0.8775
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Predominantly Upwind693.80.8647
Predominantly Downwind637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance690.40.8691
Triple Number Coastal/Long Distance Low789.60.7599
Triple Number Coastal/Long Distance Medium634.70.9454
Triple Number Coastal/Long Distance High572.51.0481
Triple Number Windward/Leeward Low1003.50.5979
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1592.41096.7857.0733.2660.9618.0582.6525.8508.2
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low789.50.7599
Triple Number AP Medium634.70.9453
Triple Number AP High572.51.0481
Triple Number Windward/Leeward Low1044.10.5746
Triple Number Windward/Leeward Medium772.70.7765
Triple Number Windward/Leeward High683.80.8775
Single Number Predominant Upwind715.50.8385
Single Number Predominant Reaching628.90.9541
Single Number Predominant Downwind661.30.9074
Predominant Upwind - Low935.60.6413
Predominant Upwind - Low/Med747.00.8032
Predominant Upwind - Medium676.40.8870
Predominant Upwind - Med/High637.70.9409
Predominant Upwind - High618.60.9699
Predominant Downwind Low939.10.6389
Predominant Downwind Low/Med714.80.8394
Predominant Downwind Medium618.10.9707
Predominant Downwind Med/High553.41.0841
Predominant Downwind High512.51.1706
Predominant Reaching Low840.20.7141
Predominant Reaching Low/Med664.90.9024
Predominant Reaching Medium595.21.0081
Predominant Reaching Med/High548.81.0932
Predominant Reaching High519.61.1547
SA/DSPL Upwind25.52SA/DSPL Downwind42.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1154.20.5199
5-Band Windward/Leeward Low/Med877.00.6841
5-Band Windward/Leeward Medium760.90.7885
5-Band Windward/Leeward Med/High693.50.8652
5-Band Windward/Leeward High659.40.9099
Windward/Leeward 60-40 Low1157.80.5182
Windward/Leeward 60-40 Low/Med889.90.6742
Windward/Leeward 60-40 Medium781.10.7682
Windward/Leeward 60-40 Med/High720.20.8331
Windward/Leeward 60-40 High691.10.8681
5-Band AP Low861.90.6961
5-Band AP Low/Med704.20.8521
5-Band AP Medium626.90.9571
5-Band AP Med/High579.81.0348
5-Band AP High553.51.0840
5-Band SF Bay Tour - Low1004.80.5972
5-Band SF Bay Tour - Low/Med842.70.7120
5-Band SF Bay Tour - Medium739.70.8111
5-Band SF Bay Tour - Med/High680.10.8823
5-Band SF Bay Tour - High648.70.9249
Chicago-Mac Upwind0.8158
Chicago-Mac All Purpose0.8479
Chicago-Mac Downwind0.8761
Bayview-Mac Cove Island0.6408
Bayview-Mac Shore0.6454
Harvest Moon Regatta551.41.0881
Double HandedClub Certificate2025
PAPERISSIMAITA-17612
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)
ClassDuck 31Measurement01/01/1983HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.120Max. Beam3.248Draft1.776Displacement2,747Wetted area16.04IMS L6.920LSM06.586Acc. length9.120Sink (kg/mm) 11.54
VCGD-0.100VCGM-0.135RM Rated (kg·m) 64.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight170
PROPELLER
Propeller TypeFeathering 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.300PBW0.100PIPA0.0042
PSD0.025PHD0.066PHL0.111
PSA20.0°ESL0.702
ST10.021ST20.080ST30.087
ST40.050ST50.260
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingYesFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P11.650IG10.700ISP10.730MDT10.090MDL10.145MDT2MDL2TLTaperMW0.145GO0.145
E4.270J3.330BAS1.525FSDNo FoilSFJSPL3.400WPLTPSBD0.165MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.100Flotation Date10/05/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
PAPERISSIMAITA-17612
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.190.971.732.873.7030.6810/05/2022
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.050.561.071.932.733.3810.60YesNo 19.5510/05/2022
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentA10.7010.7010.705.985.6852.7910/05/2022