Club
Certificate
2023

Boat

NAHODKA

ITA-9517

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.0°41.2°39.9°37.8°36.6°36.0°35.7°
Beat VMG3.384.084.614.975.195.305.40
52°5.156.066.606.897.087.207.32
60°5.426.286.757.027.207.347.49
75°5.576.416.867.127.327.497.75
90°5.456.346.837.187.437.627.86
110°5.186.276.897.257.547.808.33
120°5.016.106.797.197.487.768.37
135°4.515.616.456.957.287.558.12
150°3.844.895.736.356.747.037.47
Run VMG3.324.244.965.505.896.437.10
Gybe Angles145.1°146.9°147.1°147.8°170.0°171.7°174.8°

APH: 586.2

CDL: 8.973

GPH: 658.2

CertNo: 23/1

BOAT
ClassSwan 371DesignerHollandBuilderNautorAge date05/1981Series date01/1979Offset fileSWN371.offData fileI9517
HULL
Length Overall11.229 mMaximum Beam3.474 mDraft2.050 mDisplacement7,142 kgDLR8.9697IMS DivisionCruiser/RacerDynamic Allowance0.450%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 3 bladesDiameter0.432m
CREW
Maximum weight650 kgMinimum weight488 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail27.1327.50Headsail Luffed49.4249.42Headsail FlyingSymmetricAsymmetric77.0178.51 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail8.02Storm Jib10.30Heavy Weather Jib27.80
SAIL LIMITS
Headsails1 * 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.
ORC Ref  03190002KFUIssued on 04/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

NAHODKA

ITA-9517

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1064.1881.6781.5724.0694.2679.4666.2
52°698.6594.1545.5522.2508.6500.0492.0
60°664.6572.9533.1512.9500.0490.7480.7
75°645.9561.2525.0505.4491.6480.7464.5
90°660.9567.6526.9501.1484.6472.2458.1
110°694.6574.4522.3496.3477.6461.3432.1
120°718.7590.6529.9501.0481.1463.7430.3
135°797.5641.7558.2517.9494.7476.6443.6
150°937.9736.0628.1566.9533.9511.8481.8
Run VMG1082.9849.9725.3654.6610.9559.7507.3
Selected Courses
Windward / Leeward1073.5865.7753.4689.3652.6619.5586.8
All purpose828.0681.3606.5565.6541.9523.4500.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward719.50.8339
All purpose586.21.0235
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7649
Downwind "popa"0.8416
70% up, 30% down "Ilhabela"0.7864
30% up, 70% down "Ilhabela-inverso"0.8170
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Predominantly Upwind623.00.9630
Predominantly Downwind606.80.9888
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low754.60.7951
Triple Number All Purpose Medium582.91.0293
Triple Number All Purpose High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Predominantly Upwind623.00.9630
Predominantly Downwind606.80.9888
Predominantly Upwind Low827.40.7251
Predominantly Upwind Medium636.50.9427
Predominantly Upwind High581.91.0312
Predominantly Downwind Low836.20.7175
Predominantly Downwind Medium609.50.9844
Predominantly Downwind High516.51.1617
Chicago-Mac Upwind0.9451
Chicago-Mac All Purpose0.9557
Chicago-Mac Downwind0.9714
Bayview-Mac Cove Island0.8893
Bayview-Mac Shore0.9023
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching559.71.0721
Predominantly Reaching Low686.80.8736
Predominantly Reaching Medium555.91.0793
Predominantly Reaching High492.41.2185
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1057.50.5674
5-Band Low / Medium886.50.6768
5-Band Medium702.80.8538
5-Band Medium / High625.60.9591
5-Band High592.41.0128
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance637.9
Triple Number Coastal/Long Distance Low754.6
Triple Number Coastal/Long Distance Medium582.9
Triple Number Coastal/Long Distance High519.4
Triple Number Windward/Leeward Low969.6
Triple Number Windward/Leeward Medium716.2
Triple Number Windward/Leeward High615.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7951
Triple Number Coastal/Long Distance Medium1.0293
Triple Number Coastal/Long Distance High1.1551
Triple Number Windward/Leeward Low0.6188
Triple Number Windward/Leeward Medium0.8378
Triple Number Windward/Leeward High0.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low754.6
Triple Number Coastal/Long Distance Medium582.9
Triple Number Coastal/Long Distance High519.4
Triple Number Windward/Leeward Low969.6
Triple Number Windward/Leeward Medium716.2
Triple Number Windward/Leeward High615.5
Predominantly Upwind623.0
Predominantly Downwind606.8
Predominantly Reaching576.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7951
Triple Number Coastal/Long Distance Medium1.0293
Triple Number Coastal/Long Distance High1.1551
Triple Number Windward/Leeward Low0.6188
Triple Number Windward/Leeward Medium0.8378
Triple Number Windward/Leeward High0.9748
Coastal/Long Distance0.9406
Predominantly Upwind0.9630
Predominantly Downwind0.9888
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7951
Tretall Distanseseilas Mellomvind1.0293
Tretall Distanseseilas Mye vind1.1551
Tretall Pølsebane Lite vind0.6188
Tretall Pølsebane Mellomvind0.8378
Tretall Pølsebane Mye vind0.9748
Distanseseilas ett tall (OSN 8-16kn)0.9406
Distanseseilas ett tall (APH 6-20kn)1.0235
Enkeltall Motvind0.9630
Enkeltall Medvind0.9888
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Coastal/Long Distance637.90.9406
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind623.00.9630
Predominantly Downwind606.80.9888
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore596.61.0057
Cape Doctor Coastal507.41.1825
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7951
Triple Number Coastal/Long Distance Medium1.0293
Triple Number Coastal/Long Distance High1.1551
Triple Number Windward/Leeward Low0.6188
Triple Number Windward/Leeward Medium0.8378
Triple Number Windward/Leeward High0.9748
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7951
Triple Number Coastal/Long Distance Medium1.0293
Triple Number Coastal/Long Distance High1.1551
Triple Number Windward/Leeward Low0.6188
Triple Number Windward/Leeward Medium0.8378
Triple Number Windward/Leeward High0.9748
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Predominantly Upwind623.00.9630
Predominantly Downwind606.80.9888
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance637.90.9406
Triple Number Coastal/Long Distance Low754.60.7951
Triple Number Coastal/Long Distance Medium582.91.0293
Triple Number Coastal/Long Distance High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.5815.9681.6602.6562.3530.3484.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low754.60.7951
Triple Number All Purpose Medium582.91.0293
Triple Number All Purpose High519.41.1551
Triple Number Windward/Leeward Low969.60.6188
Triple Number Windward/Leeward Medium716.20.8378
Triple Number Windward/Leeward High615.50.9748
Predominantly Upwind623.00.9630
Predominantly Downwind606.80.9888
Predominantly Upwind Low827.40.7251
Predominantly Upwind Medium636.50.9427
Predominantly Upwind High581.91.0312
Predominantly Downwind Low836.20.7175
Predominantly Downwind Medium609.50.9844
Predominantly Downwind High516.51.1617
Chicago-Mac Upwind0.9451
Chicago-Mac All Purpose0.9557
Chicago-Mac Downwind0.9714
Bayview-Mac Cove Island0.8893
Bayview-Mac Shore0.9023
Harvest Moon Regatta519.91.1541
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy601.20.9979
San Francisco Bay Medium704.20.8521
Predominantly Reaching559.71.0721
Predominantly Reaching Low686.80.8736
Predominantly Reaching Medium555.91.0793
Predominantly Reaching High492.41.2185
Windward/Leeward 60-40 Low970.30.6184
Windward/Leeward 60-40 Medium727.30.8249
Windward/Leeward 60-40 High636.80.9422
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1057.50.5674
5-Band Low / Medium886.50.6768
5-Band Medium702.80.8538
5-Band Medium / High625.60.9591
5-Band High592.41.0128
ORC Ref  03190002KFUIssued on 04/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

NAHODKA

ITA-9517

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)
ClassSwan 371Measurement01/01/1980HINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA11.229Max. Beam3.474Draft2.050Displacement7,142Wetted area26.73IMS L9.437LSM09.268Acc. length11.229Sink (kg/mm) 18.80
VCGD-0.489VCGM-0.455RM Rated (kg·m) 185.0Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFeathering 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.432PBW0.160PIPA0.0041
PSD0.028PHD0.060PHL0.110
PSA15.0°ESL0.970
ST10.025ST20.090ST30.090
ST40.060ST50.177
RIG
Forestay tensionAftInner stayAdjustableCarbon mastNoHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders2Rotating mastNo
P12.550IG14.350ISP14.360MDT10.120MDL10.160MDT2MDL2TLNo TaperMW0.160GO0.160
E3.650J4.570BAS1.600FSDNo FoilSFJ0.140SPLWPLTPS4.710BD0.160MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered185.0Flotation Date17/09/2020MeasurerComment
SFFP0.710FFMFF1.279LCFcl6.192SG1.0246
SAFP10.492FAMFA1.048LCFsh6.435HBI1.067
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03190002KFUIssued on 04/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

NAHODKA

ITA-9517

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.130.791.342.373.0227.1317/09/2020
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.000.000.000.000.007.0013.87NoNo 49.4217/09/2020
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA13.6512.5013.087.126.86104%77.0117/09/2020
ORC Ref  03190002KFUIssued on 04/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org