Club
Certificate
2023

Boat

Concerto

NOR 8936

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.2°40.8°39.6°39.3°38.7°38.2°37.2°
Beat VMG3.924.795.415.796.026.176.36
52°5.997.117.888.338.578.718.87
60°6.317.398.138.558.808.949.10
75°6.507.578.298.728.999.189.42
90°6.337.448.248.739.049.279.61
110°5.967.308.288.869.229.489.79
120°5.817.158.188.829.229.5410.05
135°5.226.577.658.458.989.3510.00
150°4.375.636.737.678.418.919.60
Run VMG3.794.885.836.667.398.018.99
Gybe Angles139.9°147.5°150.2°152.9°156.8°164.6°178.4°

APH: 491.1

CDL: 13.279

GPH: 555.1

CertNo: 6564

BOAT
ClassSWAN 61DesignerFrersBuilderNautorAge date01/1989Series date01/1989Offset fileSWN61.offData file6564
HULL
Length Overall18.446 mMaximum Beam4.962 mDraft3.134 mDisplacement27,985 kgDLR8.7610IMS DivisionCruiser/RacerDynamic Allowance0.650%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 3 bladesDiameter0.440m
CREW
Maximum weight1,195 kgMinimum weight897 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail70.3271.06Headsail Luffed112.95112.95Headsail FlyingSymmetric231.89231.89Asymmetric
STORM SAIL AREAS (m²)
Trysail22.16Storm Jib25.26Heavy Weather Jib68.19
SAIL LIMITS
Headsails7  Spinnakers5
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  03440002S6CIssued on 07/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Concerto

NOR 8936

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG919.0751.1665.9621.8598.3583.3566.4
52°600.7506.7457.0432.4419.8413.1405.8
60°570.8487.0442.8421.1409.3402.5395.4
75°553.9475.6434.0412.7400.4392.3382.4
90°568.3483.9437.0412.6398.3388.5374.8
110°604.2493.1434.6406.3390.6379.7367.8
120°619.6503.5440.3408.2390.3377.5358.3
135°689.8548.3470.8425.9401.1384.9360.1
150°823.0639.5535.2469.3428.1403.8374.8
Run VMG950.3738.5617.8540.3487.4449.7400.6
Selected Courses
Windward / Leeward934.6744.8641.9581.0542.8516.5483.5
All purpose717.5583.5511.3471.1447.3431.7412.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward608.30.9864
All purpose491.11.2218
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8925
Downwind "popa"1.0037
70% up, 30% down "Ilhabela"0.9232
30% up, 70% down "Ilhabela-inverso"0.9675
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Predominantly Upwind525.81.1410
Predominantly Downwind507.91.1814
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low650.50.9224
Triple Number All Purpose Medium487.91.2297
Triple Number All Purpose High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Predominantly Upwind525.81.1410
Predominantly Downwind507.91.1814
Predominantly Upwind Low711.30.8435
Predominantly Upwind Medium537.91.1155
Predominantly Upwind High489.41.2261
Predominantly Downwind Low724.50.8282
Predominantly Downwind Medium507.61.1820
Predominantly Downwind High416.81.4395
Chicago-Mac Upwind1.1190
Chicago-Mac All Purpose1.1348
Chicago-Mac Downwind1.1573
Bayview-Mac Cove Island1.0486
Bayview-Mac Shore1.0659
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching467.61.2830
Predominantly Reaching Low589.91.0172
Predominantly Reaching Medium464.01.2931
Predominantly Reaching High403.51.4868
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low920.00.6522
5-Band Low / Medium763.50.7859
5-Band Medium593.01.0118
5-Band Medium / High520.81.1520
5-Band High489.21.2265
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance536.3
Triple Number Coastal/Long Distance Low650.5
Triple Number Coastal/Long Distance Medium487.9
Triple Number Coastal/Long Distance High428.4
Triple Number Windward/Leeward Low839.7
Triple Number Windward/Leeward Medium605.4
Triple Number Windward/Leeward High510.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9224
Triple Number Coastal/Long Distance Medium1.2297
Triple Number Coastal/Long Distance High1.4005
Triple Number Windward/Leeward Low0.7145
Triple Number Windward/Leeward Medium0.9911
Triple Number Windward/Leeward High1.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low650.5
Triple Number Coastal/Long Distance Medium487.9
Triple Number Coastal/Long Distance High428.4
Triple Number Windward/Leeward Low839.7
Triple Number Windward/Leeward Medium605.4
Triple Number Windward/Leeward High510.7
Predominantly Upwind525.8
Predominantly Downwind507.9
Predominantly Reaching482.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9224
Triple Number Coastal/Long Distance Medium1.2297
Triple Number Coastal/Long Distance High1.4005
Triple Number Windward/Leeward Low0.7145
Triple Number Windward/Leeward Medium0.9911
Triple Number Windward/Leeward High1.1748
Coastal/Long Distance1.1188
Predominantly Upwind1.1410
Predominantly Downwind1.1814
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9224
Tretall Distanseseilas Mellomvind1.2297
Tretall Distanseseilas Mye vind1.4005
Tretall Pølsebane Lite vind0.7145
Tretall Pølsebane Mellomvind0.9911
Tretall Pølsebane Mye vind1.1748
Distanseseilas ett tall (OSN 8-16kn)1.1188
Distanseseilas ett tall (APH 6-20kn)1.2218
Enkeltall Motvind1.1410
Enkeltall Medvind1.1814
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Coastal/Long Distance536.31.1188
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind525.81.1410
Predominantly Downwind507.91.1814
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore493.41.2161
Cape Doctor Coastal418.31.4344
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9224
Triple Number Coastal/Long Distance Medium1.2297
Triple Number Coastal/Long Distance High1.4005
Triple Number Windward/Leeward Low0.7145
Triple Number Windward/Leeward Medium0.9911
Triple Number Windward/Leeward High1.1748
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9224
Triple Number Coastal/Long Distance Medium1.2297
Triple Number Coastal/Long Distance High1.4005
Triple Number Windward/Leeward Low0.7145
Triple Number Windward/Leeward Medium0.9911
Triple Number Windward/Leeward High1.1748
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Predominantly Upwind525.81.1410
Predominantly Downwind507.91.1814
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance536.31.1188
Triple Number Coastal/Long Distance Low650.50.9224
Triple Number Coastal/Long Distance Medium487.91.2297
Triple Number Coastal/Long Distance High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.2701.5577.6503.6464.4436.5397.6
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low650.50.9224
Triple Number All Purpose Medium487.91.2297
Triple Number All Purpose High428.41.4005
Triple Number Windward/Leeward Low839.70.7145
Triple Number Windward/Leeward Medium605.40.9911
Triple Number Windward/Leeward High510.71.1748
Predominantly Upwind525.81.1410
Predominantly Downwind507.91.1814
Predominantly Upwind Low711.30.8435
Predominantly Upwind Medium537.91.1155
Predominantly Upwind High489.41.2261
Predominantly Downwind Low724.50.8282
Predominantly Downwind Medium507.61.1820
Predominantly Downwind High416.81.4395
Chicago-Mac Upwind1.1190
Chicago-Mac All Purpose1.1348
Chicago-Mac Downwind1.1573
Bayview-Mac Cove Island1.0486
Bayview-Mac Shore1.0659
Harvest Moon Regatta426.41.4072
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy500.61.1985
San Francisco Bay Medium597.11.0049
Predominantly Reaching467.61.2830
Predominantly Reaching Low589.91.0172
Predominantly Reaching Medium464.01.2931
Predominantly Reaching High403.51.4868
Windward/Leeward 60-40 Low838.80.7153
Windward/Leeward 60-40 Medium617.70.9714
Windward/Leeward 60-40 High534.51.1225
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low920.00.6522
5-Band Low / Medium763.50.7859
5-Band Medium593.01.0118
5-Band Medium / High520.81.1520
5-Band High489.21.2265
ORC Ref  03440002S6CIssued on 07/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Concerto

NOR 8936

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSWAN 61MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA18.446Max. Beam4.962Draft3.134Displacement27,985Wetted area66.77IMS L15.023LSM014.726Acc. length16.127Sink (kg/mm) 45.35
VCGD-0.081VCGM0.057RM Rated (kg·m) 649.8Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.440PBWPIPA0.0019
PSD0.000PHD0.000PHL0.000
PSA0.0°ESL0.000
ST10.000ST20.000ST30.000
ST40.000ST50.000
RIG
Forestay tensionAftInner stayFixedCarbon mastNoHeadsail furlerNoMainsail furlerYesArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays2Spreaders2Rotating mastNo
P19.970IG22.474ISP22.474MDT10.200MDL10.350MDT20.200MDL20.344TL0.000MW0.000GO0.000
E6.340J7.090BAS2.000FSD0.042SFJ0.000SPL7.344WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date01/01/2015MeasurerComment
SFFP0.914FFMFF1.678LCFcl9.741SG
SAFP17.890FAMFA1.218LCFsh10.054HBI1.371
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002S6CIssued on 07/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Concerto

NOR 8936

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment400-2007041107000.070.001.943.615.0470.3211/04/2007
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment398-2008020304050.000.000.000.000.0010.2521.65NoNo 112.9503/02/20086564-2004012412010.000.000.000.000.008.9421.66NoNo 98.5601/01/1753
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment6564-20040124120221.0521.0521.050.000.00231.8901/01/1753
ORC Ref  03440002S6CIssued on 07/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org