International Certificate2026
CHILAVISTAITA-16204
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 Angles46.0°43.0°40.8°39.0°38.2°37.7°38.1°38.7°40.4°
Beat VMG2.493.504.214.674.854.955.005.014.88
52°3.925.346.216.666.876.957.027.077.04
60°4.235.626.426.837.067.177.237.337.30
75°4.475.836.596.997.277.497.617.777.85
90°4.395.896.737.177.497.707.898.238.43
110°4.245.876.827.357.788.128.419.089.65
120°4.125.746.747.297.788.268.749.5010.77
135°3.645.166.306.987.467.968.5210.0712.35
150°3.024.355.466.366.957.367.778.7210.98
Run VMG2.613.774.735.516.066.476.827.569.51
Gybe Angles139.7°143.5°147.8°150.1°153.7°158.7°160.6°145.1°142.0°
APH ToD:562.7CDL: 8.430APH ToT: 1.0663CertNo:26/1
BOAT
ClassBonin 31 mod.DesignerCossuttiBuilderBoninAge date03/2009Series date08/2006Offset fileBONIN31-ITA16204.offData fileI16204
HULL
Length Overall9.390 mMaximum Beam3.336 mDraft1.987 mDisplacement3,396 kgDLR5.5298IMS DivisionCruiser/RacerDynamic Allowance0.180%Age Allowance0.650%RS Assessment-0.178%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.350m
CREW
Maximum weight480 kg(declared)Minimum weight350 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail28.3428.92Headsail Luffed23.6223.62Headsail Flying30.9232.01SymmetricAsymmetric90.6790.67 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS Maximum (m²)
Trysail8.24Storm Jib7.84Heavy Weather Jib21.17
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 82.4 kg·m Stability Index 119.8
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  03190004KT1 Issued on 10/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
CHILAVISTAITA-16204
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 VMG1447.71029.5854.7771.5741.7727.7720.1719.3737.5
52°918.3674.8580.1540.5524.3518.0513.1508.9511.6
60°850.4640.5560.6526.8509.9502.4497.7491.4492.9
75°805.1617.0546.4515.2494.9480.4472.8463.4458.8
90°819.7611.5535.2502.1480.6467.7456.6437.3427.0
110°848.9613.1527.6490.0462.9443.5428.3396.4372.9
120°874.5626.7533.9494.0463.0436.0412.0378.8334.2
135°987.7698.3571.4515.9482.3452.2422.6357.4291.4
150°1193.4826.7659.4566.0517.7489.0463.6412.6327.8
Run VMG1378.1954.6761.5653.5593.6556.7527.5476.5378.5
Selected Courses
Windward / Leeward1412.9992.0808.1712.5667.6642.2623.8597.9558.0
All purpose1066.4763.6638.3577.8546.8527.3512.3487.7461.0
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward693.90.8647
All purpose562.71.0663
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7548
Downwind "popa"0.9284
70% up, 30% down "Ilhabela"0.7997
30% up, 70% down "Ilhabela-inverso"0.8685
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Predominantly Upwind611.40.9814
Predominantly Downwind565.91.0602
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP585.01.0256 Predom. Rc High453.91.3219 5B SF Bay L/M745.00.8053 TriNum AP Low700.90.8560 Predom. Dn Low837.40.7165 5B SF Bay Med654.80.9163 TriNum AP Med560.01.0715 Predom. Dn L/M630.80.9511 5B SF Bay M/H606.20.9898 TriNum AP High506.81.1839 Predom. Dn Med549.91.0910 5B SF Bay High577.01.0398 TriNum W/L Low941.80.6371 Predom. Dn M/H495.71.2103 5B AP Low771.00.7782 TriNum W/L Med687.90.8722 Predom. Dn High451.11.3301 5B AP L/M621.90.9648 TriNum W/L Hig618.70.9698 ChiMac Up Low754.30.7954 5B AP Med553.41.0842 Predom. Upwind635.10.9448 ChiMac Up Med687.60.8726 5B AP M/H513.61.1683 Predom. Reaching554.91.0813 ChiMac Up High609.80.9840 5B AP High487.31.2313 Predom. Downwind588.11.0203 ChiMac Off Low728.00.8241 5B W/L Low1051.30.5707 Predom. Up Low849.90.7060 ChiMac Off Med649.60.9236 5B W/L L/M780.70.7685 Predom. Up L/M659.90.9092 ChiMac Off High553.91.0833 5B W/L Med678.80.8839 Predom. Up Med595.21.0081 ChiMac AP Low737.60.8134 5B W/L M/H626.20.9581 Predom. Up M/H563.51.0647 ChiMac AP Med666.10.9008 5B W/L High595.51.0076 Predom. Up High547.21.0964 ChiMac AP High580.31.0339 W/L 60-40 Low1059.10.5665 Predom. Rc Low748.20.8020 BayMac Cove Island845.40.7098 W/L 60-40 L/M791.50.7581 Predom. Rc L/M584.11.0273 BayMac Shore838.90.7153 W/L 60-40 Med693.40.8653 Predom. Rc Med524.01.1451 Harvest Moon493.11.2167 W/L 60-40 M/H645.60.9294 Predom. Rc M/H484.51.2383 5B SF Bay Low890.30.6740 W/L 60-40 High620.90.9664      SA/DSPL Up22.91SA/DSPL Dn52.46
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance611.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating611.00.9820
FinRating, kevyt tuuli1032.50.9685
FinRating, kova tuuli488.11.0245
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9820
Triple Number Coastal/Long Distance Low0.8560
Triple Number Coastal/Long Distance Medium1.0716
Triple Number Coastal/Long Distance High1.1839
Triple Number Windward/Leeward Low0.6666
Triple Number Windward/Leeward Medium0.8722
Triple Number Windward/Leeward High0.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
For information
General Purpose Handicap (GPH)626.6
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Saronikos S All Purpose638.20.9402
Saronikos S Upwind718.40.8352
Saronikos S Downwind535.61.1202
Saronikos N All Purpose668.30.8978
Saronikos N Upwind748.40.8017
Saronikos N Downwind580.21.0342
Saronikos SW All Purpose635.20.9445
Saronikos SW Upwind732.50.8191
Saronikos SW Downwind535.51.1205
Saronikos NE All Purpose685.30.8756
Saronikos NE Upwind700.40.8567
Saronikos NE Downwind642.80.9334
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose585.01.0256
5-Band All Purpose Low839.60.7146
5-Band All Purpose L/M643.50.9324
5-Band All Purpose Med571.41.0500
5-Band All Purpose M/H529.11.1340
5-Band All Purpose High499.41.2014
Single Number Predominant Upwind610.20.9833
Single Number Predominant Reaching536.21.1189
Single Number Predominant Downwind566.81.0585
5-Band 50-50 Windward/Leeward Low1051.30.5707
5-Band 50-50 Windward/Leeward L/M780.70.7685
5-Band 50-50 Windward/Leeward Med678.80.8839
5-Band 50-50 Windward/Leeward M/H626.20.9581
5-Band 50-50 Windward/Leeward High595.51.0076
5-Band 60-40 Windward/Leeward Low1059.10.5665
5-Band 60-40 Windward/Leeward L/M791.50.7581
5-Band 60-40 Windward/Leeward Med693.40.8653
5-Band 60-40 Windward/Leeward M/H645.60.9294
5-Band 60-40 Windward/Leeward High620.90.9664
Triple Number 50-50 Windward/Leeward Low941.80.6371
Triple Number 50-50 Windward/Leeward Med688.00.8721
Triple Number 50-50 Windward/Leeward High618.70.9698
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward708.60.8468
Triple Number 60-40 Windward/Leeward Low950.30.6314
Triple Number 60-40 Windward/Leeward Med701.90.8548
Triple Number 60-40 Windward/Leeward High639.30.9385
Triple Number All-Purpose Low759.10.7904
Triple Number All-Purpose Med578.31.0376
Triple Number All-Purpose High521.61.1504
Triple Number Predominant Upwind Low777.40.7718
Triple Number Predominant Upwind Med602.90.9951
Triple Number Predominant Upwind High565.51.0611
Triple Number Predominant Reaching Low685.00.8759
Triple Number Predominant Reaching Med539.11.1130
Triple Number Predominant Reaching High467.01.2848
Triple Number Predominant Downwind Low752.70.7971
Triple Number Predominant Downwind Med558.41.0746
Triple Number Predominant Downwind High474.31.2650
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low700.9
Triple Number Coastal/Long Distance Medium559.9
Triple Number Coastal/Long Distance High506.8
Triple Number Windward/Leeward Low900.1
Triple Number Windward/Leeward Medium687.9
Triple Number Windward/Leeward High618.7
Predominantly Upwind611.4
Predominantly Downwind565.9
Predominantly Reaching543.4
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8560
Triple Number Coastal/Long Distance Medium1.0716
Triple Number Coastal/Long Distance High1.1839
Triple Number Windward/Leeward Low0.6666
Triple Number Windward/Leeward Medium0.8722
Triple Number Windward/Leeward High0.9698
Coastal/Long Distance0.9820
Predominantly Upwind0.9814
Predominantly Downwind1.0602
For information
General Purpose Handicap (GPH)626.6
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0663
Distanseseilas Trippeltall svak vind0.8560
Distanseseilas Trippeltall mellomvind1.0716
Distanseseilas Trippeltall sterk vind1.1839
Pølsebane Trippeltall svak vind0.6666
Pølsebane Trippeltall mellomvind0.8722
Pølsebane Trippeltall sterk vind0.9698
Motvind Singeltall0.9814
Medvind Singeltall1.0602
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Coastal/Long Distance611.00.9820
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind611.40.9814
Predominantly Downwind565.91.0602
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore570.01.0527
Cape Doctor Coastal469.01.2794
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8560
Triple Number Coastal/Long Distance Medium1.0716
Triple Number Coastal/Long Distance High1.1839
Triple Number Windward/Leeward Low0.6666
Triple Number Windward/Leeward Medium0.8722
Triple Number Windward/Leeward High0.9698
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8560
Triple Number Coastal/Long Distance Medium1.0716
Triple Number Coastal/Long Distance High1.1839
Triple Number Windward/Leeward Low0.6666
Triple Number Windward/Leeward Medium0.8722
Triple Number Windward/Leeward High0.9698
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Predominantly Upwind611.40.9814
Predominantly Downwind565.91.0602
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance611.00.9820
Triple Number Coastal/Long Distance Low700.90.8560
Triple Number Coastal/Long Distance Medium559.91.0716
Triple Number Coastal/Long Distance High506.81.1839
Triple Number Windward/Leeward Low900.10.6666
Triple Number Windward/Leeward Medium687.90.8722
Triple Number Windward/Leeward High618.70.9698
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1409.4988.3760.9646.1583.2547.5516.7465.8436.5
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP585.01.0256 Predom. Dn High451.11.3301 5B AP M/H513.61.1683 TriNum AP Low700.90.8560 Predom. Rc Low748.20.8020 5B AP High487.31.2313 TriNum AP Med560.01.0715 Predom. Rc L/M584.11.0273 5B SF Bay Low890.30.6740 TriNum AP High506.81.1839 Predom. Rc Med524.01.1451 5B SF Bay L/M745.00.8053 TriNum W/L Low941.80.6371 Predom. Rc M/H484.51.2383 5B SF Bay Med654.80.9163 TriNum W/L Med687.90.8722 Predom. Rc High453.91.3219 5B SF Bay M/H606.20.9898 TriNum W/L Hig618.70.9698 5B W/L Low1051.30.5707 5B SF Bay High577.01.0398 Predom. Upwind635.10.9448 5B W/L L/M780.70.7685 ChiMac Up Low754.30.7954 Predom. Reaching554.91.0813 5B W/L Med678.80.8839 ChiMac Up Med687.60.8726 Predom. Downwind588.11.0203 5B W/L M/H626.20.9581 ChiMac Up High609.80.9840 Predom. Up Low849.90.7060 5B W/L High595.51.0076 ChiMac Off Low728.00.8241 Predom. Up L/M659.90.9092 W/L 60-40 Low1059.10.5665 ChiMac Off Med649.60.9236 Predom. Up Med595.21.0081 W/L 60-40 L/M791.50.7581 ChiMac Off High553.91.0833 Predom. Up M/H563.51.0647 W/L 60-40 Med693.40.8653 ChiMac AP Low737.60.8134 Predom. Up High547.21.0964 W/L 60-40 M/H645.60.9294 ChiMac AP Med666.10.9008 Predom. Dn Low837.40.7165 W/L 60-40 High620.90.9664 ChiMac AP High580.31.0339 Predom. Dn L/M630.80.9511 5B AP Low771.00.7782 BayMac Cove Island845.40.7098 Predom. Dn Med549.91.0910 5B AP L/M621.90.9648 BayMac Shore838.90.7153 Predom. Dn M/H495.71.2103 5B AP Med553.41.0842 Harvest Moon493.11.2167      SA/DSPL Up22.91SA/DSPL Dn52.46
ORC Ref  03190004KT1 Issued on 10/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
CHILAVISTAITA-16204
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)
ClassBonin 31 mod.Measurement12/10/2024HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.390Maximum beam3.336Draft1.987Displacement3,396Wetted area18.85IMS L8.753LSM08.499Accomod. length9.390Sink (kg/mm) 15.12
VCGD-0.088VCGM-0.048 RM Rated (kg·m) 82.4Limit of positive stability(°) 124.5 Stability Index 119.8 BLR index 0.0000Default crew weight546 Declared crew weight 480
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.350PBW0.103PIPA0.0026
EDL1.127ST10.042ST20.135
ST30.135ST40.088ST50.300
RIG
BackstayAdjustableForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P11.760IG12.380ISP13.470MDT10.100MDL10.145MDT20.072MDL20.105TL0.700MW0.145GO0.185
E4.000J3.530BAS1.610FSD0.040SFJ0.200SPLWPLTPS4.690BD0.120MWT71.60MCG4.230
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date26/03/2025Measurer124CommentERRATA CORRIGE
SFFP0.367FFM1.286FF1.293LCFcl5.312SG1.0000
SAFP9.250FAM1.036FA1.043LCFsh5.554HBI1.174
W171.1W271.1W371.1W471.1LCFD4.930
PD1258.0PD2260.3PD3259.4PD4263.4
WD3.760PLM9000.00GSA1.0RSA1.0RM80.9
INVENTORY
BALLASTIdKindDescriptionWeightLCGVCGTCGAFixed6 lead blocks804.95Fixed Ballast Total80
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCGBWater15005.50AFuel38206.20Total deductible176.20
OTHER ITEMSIdKindDescriptionWeightLCGVCGAMiscellaneousautopilotBBattery150 Ah4.25ABattery74 Ah4.25DEngine (IC)Lombardini 18 hpTotal deductible
ORC Ref  03190004KT1 Issued on 10/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
CHILAVISTAITA-16204
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentB0.200.911.582.583.3728.3407/05/2024
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentC4.5013.50NoYes030.9204/02/2022SSE0.070.571.071.972.833.6212.32YesNo 23.6204/02/2022J2B0.100.571.031.882.793.7212.30YesNo 23.3608/04/2025J-2D0.052.848.90YesNo 12.8417/07/2025J4
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentC14.8512.8013.837.897.79101%90.6709/04/2024A14.5012.3513.436.507.3888%74.6903/05/2021B13.6012.4213.015.116.8075%59.0703/05/2021C0
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.4 mTable area0.44 m²Headroom1.66 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity68 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity38 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  03190004KT1 Issued on 10/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org