Club
Certificate
Double Handed
2023

Boat

Bertha

NOR 10494

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 Angles43.0°41.2°40.2°39.6°39.4°39.4°40.0°
Beat VMG3.324.024.484.714.814.854.82
52°5.065.976.546.826.936.997.01
60°5.326.216.747.027.157.217.26
75°5.516.386.907.207.407.537.66
90°5.416.336.907.247.507.728.04
110°5.356.457.097.487.798.008.31
120°5.216.337.027.457.838.188.69
135°4.715.846.697.217.618.018.83
150°3.955.056.016.767.237.618.37
Run VMG3.424.385.215.946.537.037.76
Gybe Angles144.8°149.6°151.4°157.7°168.2°177.2°178.1°

APH: 582.7

CDL: 8.442

GPH: 654.0

CertNo: 7823

BOAT
ClassDufour 34 StandardDesignerUmberto FeliciBuilderDufourAge date01/2003Series date01/2002Offset fileDUF34PERF.offData file7823
HULL
Length Overall10.300 mMaximum Beam3.482 mDraft1.927 mDisplacement5,231 kgDLR6.7353IMS DivisionCruiser/RacerDynamic Allowance0.290%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.340m
CREW
Maximum weight170 kgMinimum weight120 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail30.6831.24Headsail Luffed32.4832.48Headsail FlyingSymmetric78.3478.34Asymmetric
STORM SAIL AREAS (m²)
Trysail9.42Storm Jib8.19Heavy Weather Jib22.10
SAIL LIMITS
Headsails5  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  03440002NNCIssued on 05/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Bertha

NOR 10494

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 VMG1084.0895.5803.2764.5749.0742.9747.0
52°711.9602.8550.7528.2519.6515.2513.4
60°676.6579.5533.8513.0503.8499.1496.0
75°653.9564.1521.7500.0486.5478.1470.0
90°665.7568.6522.0497.3480.1466.5448.0
110°672.8558.5508.0481.4462.1450.3433.4
120°690.6569.1512.8483.0459.9440.3414.5
135°765.1616.3538.5499.3473.0449.5407.7
150°911.7712.4598.8532.8498.0473.2430.2
Run VMG1052.8822.6690.7605.7551.0512.1464.1
Selected Courses
Windward / Leeward1068.4859.1747.0685.1650.0627.5605.6
All purpose823.0675.5600.5561.3538.9524.2506.3
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward717.30.8365
All purpose582.71.0297
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7259
Downwind "popa"0.8938
70% up, 30% down "Ilhabela"0.7692
30% up, 70% down "Ilhabela-inverso"0.8358
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Predominantly Upwind632.00.9494
Predominantly Downwind588.91.0189
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low749.30.8008
Triple Number All Purpose Medium578.31.0376
Triple Number All Purpose High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Predominantly Upwind632.00.9494
Predominantly Downwind588.91.0189
Predominantly Upwind Low832.30.7209
Predominantly Upwind Medium653.00.9188
Predominantly Upwind High616.30.9735
Predominantly Downwind Low819.00.7326
Predominantly Downwind Medium582.21.0305
Predominantly Downwind High485.11.2368
Chicago-Mac Upwind0.9323
Chicago-Mac All Purpose0.9632
Chicago-Mac Downwind1.0005
Bayview-Mac Cove Island0.8960
Bayview-Mac Shore0.9042
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching553.61.0839
Predominantly Reaching Low679.40.8831
Predominantly Reaching Medium547.51.0960
Predominantly Reaching High484.21.2391
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1052.30.5702
5-Band Low / Medium880.40.6815
5-Band Medium699.20.8581
5-Band Medium / High632.50.9487
5-Band High609.40.9846
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance634.0
Triple Number Coastal/Long Distance Low749.3
Triple Number Coastal/Long Distance Medium578.3
Triple Number Coastal/Long Distance High521.2
Triple Number Windward/Leeward Low963.7
Triple Number Windward/Leeward Medium711.4
Triple Number Windward/Leeward High624.9
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8008
Triple Number Coastal/Long Distance Medium1.0376
Triple Number Coastal/Long Distance High1.1513
Triple Number Windward/Leeward Low0.6226
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low749.3
Triple Number Coastal/Long Distance Medium578.3
Triple Number Coastal/Long Distance High521.2
Triple Number Windward/Leeward Low963.7
Triple Number Windward/Leeward Medium711.4
Triple Number Windward/Leeward High624.9
Predominantly Upwind632.0
Predominantly Downwind588.9
Predominantly Reaching566.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8008
Triple Number Coastal/Long Distance Medium1.0376
Triple Number Coastal/Long Distance High1.1513
Triple Number Windward/Leeward Low0.6226
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9601
Coastal/Long Distance0.9464
Predominantly Upwind0.9494
Predominantly Downwind1.0189
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8008
Tretall Distanseseilas Mellomvind1.0376
Tretall Distanseseilas Mye vind1.1513
Tretall Pølsebane Lite vind0.6226
Tretall Pølsebane Mellomvind0.8434
Tretall Pølsebane Mye vind0.9601
Distanseseilas ett tall (OSN 8-16kn)0.9464
Distanseseilas ett tall (APH 6-20kn)1.0297
Enkeltall Motvind0.9494
Enkeltall Medvind1.0189
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Coastal/Long Distance634.00.9464
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind632.00.9494
Predominantly Downwind588.91.0189
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore612.20.9801
Cape Doctor Coastal511.71.1727
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8008
Triple Number Coastal/Long Distance Medium1.0376
Triple Number Coastal/Long Distance High1.1513
Triple Number Windward/Leeward Low0.6226
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9601
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8008
Triple Number Coastal/Long Distance Medium1.0376
Triple Number Coastal/Long Distance High1.1513
Triple Number Windward/Leeward Low0.6226
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9601
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Predominantly Upwind632.00.9494
Predominantly Downwind588.91.0189
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance634.00.9464
Triple Number Coastal/Long Distance Low749.30.8008
Triple Number Coastal/Long Distance Medium578.31.0376
Triple Number Coastal/Long Distance High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1066.8808.7674.8599.2559.5528.6481.4
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low749.30.8008
Triple Number All Purpose Medium578.31.0376
Triple Number All Purpose High521.21.1513
Triple Number Windward/Leeward Low963.70.6226
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High624.90.9601
Predominantly Upwind632.00.9494
Predominantly Downwind588.91.0189
Predominantly Upwind Low832.30.7209
Predominantly Upwind Medium653.00.9188
Predominantly Upwind High616.30.9735
Predominantly Downwind Low819.00.7326
Predominantly Downwind Medium582.21.0305
Predominantly Downwind High485.11.2368
Chicago-Mac Upwind0.9323
Chicago-Mac All Purpose0.9632
Chicago-Mac Downwind1.0005
Bayview-Mac Cove Island0.8960
Bayview-Mac Shore0.9042
Harvest Moon Regatta503.81.1909
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy614.10.9771
San Francisco Bay Medium705.20.8508
Predominantly Reaching553.61.0839
Predominantly Reaching Low679.40.8831
Predominantly Reaching Medium547.51.0960
Predominantly Reaching High484.21.2391
Windward/Leeward 60-40 Low968.90.6192
Windward/Leeward 60-40 Medium736.30.8149
Windward/Leeward 60-40 High666.10.9008
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1052.30.5702
5-Band Low / Medium880.40.6815
5-Band Medium699.20.8581
5-Band Medium / High632.50.9487
5-Band High609.40.9846
ORC Ref  03440002NNCIssued on 05/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Bertha

NOR 10494

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDufour 34 StandardMeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.300Max. Beam3.482Draft1.927Displacement5,231Wetted area23.67IMS L9.254LSM09.191Acc. length10.300Sink (kg/mm) 18.35
VCGD0.030VCGM0.061RM Rated (kg·m) 118.7Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.340PBWPIPA0.0032
EDL2.170ST10.048ST20.170
ST30.170ST40.098ST50.290
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P11.830IG12.760ISP12.900MDT10.110MDL10.190MDT20.000MDL20.000TL0.720MW0.190GO0.200
E4.550J3.740BAS1.570FSDFoilSFJ0.000SPL3.860WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.030Flotation Date01/01/2015MeasurerComment
SFFP0.390FFMFF1.324LCFcl5.792SG1.0130
SAFP9.636FAMFA1.033LCFsh6.039HBI1.141
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002NNCIssued on 05/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Bertha

NOR 10494

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment312-2018011211000.140.851.572.763.7030.6812/01/2018
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment335-2016031408330.300.631.242.543.895.2112.54NoNo 32.4814/03/2016394-2023060214550.090.621.192.413.755.1812.29NoNo 30.7702/06/2023335-2017042610090.040.490.952.023.144.2812.05NoNo 24.9926/04/2017Genoa 2
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment335-20151109151812.6812.6812.687.507.0778.3409/11/2015312-20190430144512.6812.6812.687.507.0778.3430/04/2019
ORC Ref  03440002NNCIssued on 05/06/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org