Club 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 Angles42.1°42.1°40.4°39.2°38.2°38.0°37.8°37.7°38.2°
Beat VMG2.433.243.804.184.424.544.614.694.70
52°3.704.855.565.976.226.376.466.576.62
60°3.895.065.756.136.386.556.666.806.88
75°3.995.185.886.286.566.786.967.187.31
90°3.925.175.976.436.746.947.147.507.74
110°3.875.156.016.516.907.257.557.968.27
120°3.704.965.856.416.837.227.578.258.79
135°3.274.485.416.096.556.967.378.189.17
150°2.703.834.815.616.196.617.007.768.65
Run VMG2.333.324.184.925.576.086.497.217.91
Gybe Angles147.5°147.5°153.0°157.6°165.1°171.8°178.1°178.1°177.7°
APH ToD:625.1CDL: 6.922APH ToT: 0.9599CertNo: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 Allowance0.030%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0.300m
CREW
Maximum weight450 kg(declared)Minimum weight320 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.
Club 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 VMG1482.71110.2946.2861.5815.3793.7780.2767.5766.7
52°972.6742.2647.6603.0578.5564.9557.2548.0543.7
60°924.9711.4626.3586.9563.9549.3540.4529.4523.5
75°902.9694.8611.9573.1549.1530.9517.2501.6492.4
90°918.0695.7602.7559.9534.2518.7504.3479.8464.9
110°930.9698.9599.5553.2521.8496.7477.1452.1435.5
120°973.9725.2615.5561.8527.2498.7475.3436.3409.5
135°1100.8804.1665.7590.8549.3516.9488.7440.3392.4
150°1335.0939.7747.7641.5581.3544.5514.4463.9416.3
Run VMG1545.41085.1860.6731.4646.3592.0554.7499.6455.0
Selected Courses
Windward / Leeward1511.51097.7903.4796.4730.8692.8667.5633.5610.8
All purpose1152.5853.3718.4648.2606.5580.6561.5534.0514.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward760.70.7887
All purpose625.10.9599
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6914
Downwind "popa"0.8451
70% up, 30% down "Ilhabela"0.7313
30% up, 70% down "Ilhabela-inverso"0.7923
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Predominantly Upwind677.00.8863
Predominantly Downwind632.20.9490
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low785.90.7635
Triple Number AP Medium623.30.9626
Triple Number AP High556.01.0792
Triple Number Windward/Leeward Low1041.20.5763
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Single Number Predominant Upwind698.70.8588
Single Number Predominant Reaching619.50.9685
Single Number Predominant Downwind656.20.9143
Predominant Upwind - Low929.40.6456
Predominant Upwind - Low/Med735.60.8157
Predominant Upwind - Medium658.30.9114
Predominant Upwind - Med/High615.10.9755
Predominant Upwind - High593.61.0107
Predominant Downwind Low940.50.6379
Predominant Downwind Low/Med712.00.8427
Predominant Downwind Medium611.90.9806
Predominant Downwind Med/High545.61.0996
Predominant Downwind High504.31.1897
Predominant Reaching Low837.10.7168
Predominant Reaching Low/Med658.00.9119
Predominant Reaching Medium584.71.0262
Predominant Reaching Med/High537.31.1168
Predominant Reaching High506.71.1841
SA/DSPL Upwind25.52SA/DSPL Downwind42.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1153.20.5203
5-Band Windward/Leeward Low/Med868.80.6906
5-Band Windward/Leeward Medium744.50.8059
5-Band Windward/Leeward Med/High671.30.8937
5-Band Windward/Leeward High635.50.9442
Windward/Leeward 60-40 Low1155.00.5195
Windward/Leeward 60-40 Low/Med879.30.6824
Windward/Leeward 60-40 Medium761.10.7883
Windward/Leeward 60-40 Med/High693.70.8649
Windward/Leeward 60-40 High662.30.9059
5-Band AP Low860.70.6971
5-Band AP Low/Med697.00.8608
5-Band AP Medium614.70.9761
5-Band AP Med/High563.91.0641
5-Band AP High535.31.1208
5-Band SF Bay Tour - Low1002.20.5987
5-Band SF Bay Tour - Low/Med833.90.7195
5-Band SF Bay Tour - Medium722.70.8302
5-Band SF Bay Tour - Med/High657.60.9124
5-Band SF Bay Tour - High624.20.9612
Chicago-Mac Upwind0.8334
Chicago-Mac All Purpose0.8603
Chicago-Mac Downwind0.8817
Bayview-Mac Cove Island0.6449
Bayview-Mac Shore0.6499
Harvest Moon Regatta543.61.1037
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance677.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating677.90.8851
FinRating, kevyt tuuli1132.10.8833
FinRating, kova tuuli537.80.9297
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8851
Triple Number Coastal/Long Distance Low0.7635
Triple Number Coastal/Long Distance Medium0.9627
Triple Number Coastal/Long Distance High1.0792
Triple Number Windward/Leeward Low0.5997
Triple Number Windward/Leeward Medium0.7920
Triple Number Windward/Leeward High0.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
For information
General Purpose Handicap (GPH)697.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low785.9
Triple Number Coastal/Long Distance Medium623.2
Triple Number Coastal/Long Distance High556.0
Triple Number Windward/Leeward Low1000.5
Triple Number Windward/Leeward Medium757.6
Triple Number Windward/Leeward High661.1
Predominantly Upwind677.0
Predominantly Downwind632.2
Predominantly Reaching608.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7635
Triple Number Coastal/Long Distance Medium0.9627
Triple Number Coastal/Long Distance High1.0792
Triple Number Windward/Leeward Low0.5997
Triple Number Windward/Leeward Medium0.7920
Triple Number Windward/Leeward High0.9076
Coastal/Long Distance0.8851
Predominantly Upwind0.8863
Predominantly Downwind0.9490
For information
General Purpose Handicap (GPH)697.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9599
Distanseseilas Trippeltall svak vind0.7635
Distanseseilas Trippeltall mellomvind0.9627
Distanseseilas Trippeltall sterk vind1.0792
Pølsebane Trippeltall svak vind0.5997
Pølsebane Trippeltall mellomvind0.7920
Pølsebane Trippeltall sterk vind0.9076
Motvind Singeltall0.8863
Medvind Singeltall0.9490
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Coastal/Long Distance677.90.8851
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind677.00.8863
Predominantly Downwind632.20.9490
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore617.70.9714
Cape Doctor Coastal520.11.1536
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7635
Triple Number Coastal/Long Distance Medium0.9627
Triple Number Coastal/Long Distance High1.0792
Triple Number Windward/Leeward Low0.5997
Triple Number Windward/Leeward Medium0.7920
Triple Number Windward/Leeward High0.9076
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7635
Triple Number Coastal/Long Distance Medium0.9627
Triple Number Coastal/Long Distance High1.0792
Triple Number Windward/Leeward Low0.5997
Triple Number Windward/Leeward Medium0.7920
Triple Number Windward/Leeward High0.9076
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Predominantly Upwind677.00.8863
Predominantly Downwind632.20.9490
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance677.90.8851
Triple Number Coastal/Long Distance Low785.90.7635
Triple Number Coastal/Long Distance Medium623.20.9627
Triple Number Coastal/Long Distance High556.01.0792
Triple Number Windward/Leeward Low1000.50.5997
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1599.41096.4852.3723.7645.8602.3567.5510.5490.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low785.90.7635
Triple Number AP Medium623.30.9626
Triple Number AP High556.01.0792
Triple Number Windward/Leeward Low1041.20.5763
Triple Number Windward/Leeward Medium757.60.7920
Triple Number Windward/Leeward High661.10.9076
Single Number Predominant Upwind698.70.8588
Single Number Predominant Reaching619.50.9685
Single Number Predominant Downwind656.20.9143
Predominant Upwind - Low929.40.6456
Predominant Upwind - Low/Med735.60.8157
Predominant Upwind - Medium658.30.9114
Predominant Upwind - Med/High615.10.9755
Predominant Upwind - High593.61.0107
Predominant Downwind Low940.50.6379
Predominant Downwind Low/Med712.00.8427
Predominant Downwind Medium611.90.9806
Predominant Downwind Med/High545.61.0996
Predominant Downwind High504.31.1897
Predominant Reaching Low837.10.7168
Predominant Reaching Low/Med658.00.9119
Predominant Reaching Medium584.71.0262
Predominant Reaching Med/High537.31.1168
Predominant Reaching High506.71.1841
SA/DSPL Upwind25.52SA/DSPL Downwind42.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1153.20.5203
5-Band Windward/Leeward Low/Med868.80.6906
5-Band Windward/Leeward Medium744.50.8059
5-Band Windward/Leeward Med/High671.30.8937
5-Band Windward/Leeward High635.50.9442
Windward/Leeward 60-40 Low1155.00.5195
Windward/Leeward 60-40 Low/Med879.30.6824
Windward/Leeward 60-40 Medium761.10.7883
Windward/Leeward 60-40 Med/High693.70.8649
Windward/Leeward 60-40 High662.30.9059
5-Band AP Low860.70.6971
5-Band AP Low/Med697.00.8608
5-Band AP Medium614.70.9761
5-Band AP Med/High563.91.0641
5-Band AP High535.31.1208
5-Band SF Bay Tour - Low1002.20.5987
5-Band SF Bay Tour - Low/Med833.90.7195
5-Band SF Bay Tour - Medium722.70.8302
5-Band SF Bay Tour - Med/High657.60.9124
5-Band SF Bay Tour - High624.20.9612
Chicago-Mac Upwind0.8334
Chicago-Mac All Purpose0.8603
Chicago-Mac Downwind0.8817
Bayview-Mac Cove Island0.6449
Bayview-Mac Shore0.6499
Harvest Moon Regatta543.61.1037
Club 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 L7.135LSM06.586Acc. length9.120Sink (kg/mm) 11.54
VCGD-0.100VCGM-0.135RM Rated (kg·m) 64.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight379Declared crew weight450
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
Club 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