Club
Certificate
Non Spinnaker
2023

Boat

Lærke

NOR 8376

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 Angles45.3°43.5°43.0°42.7°41.8°40.9°40.2°
Beat VMG2.753.313.704.024.284.464.61
52°4.295.075.636.006.256.416.57
60°4.555.325.866.206.426.576.76
75°4.705.486.036.366.586.757.03
90°4.635.436.016.406.676.887.22
110°4.285.175.876.336.626.877.31
120°4.064.975.686.206.536.787.23
135°3.584.525.255.866.296.587.04
150°3.084.004.765.405.946.336.82
Run VMG2.673.494.234.885.455.946.58
Gybe Angles150.2°155.9°167.6°173.6°176.6°178.4°179.3°

APH: 689.2

CDL: 6.801

GPH: 780.7

CertNo: 5713

BOAT
ClassONE OFF/SPISSGATTEDesignerBuilderKais BåtbyggeriAge date01/1991Series date01/1991Offset filecl_laerke.OFFData file5713
HULL
Length Overall8.980 mMaximum Beam2.770 mDraft1.259 mDisplacement5,500 kgDLR10.6020IMS DivisionCruiser/RacerDynamic Allowance0.710%Age Allowance0.487%
PROPELLER
InstallationShaft non exposedTypeSolid 2 bladesDiameter0.340m
CREW
Maximum weight504 kgMinimum weight378 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail26.5226.73Headsail Luffed25.1825.18Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail8.62Storm Jib6.02Heavy Weather Jib16.25
SAIL LIMITS
Headsails5  Spinnakers0 * Spinnaker pole aboard
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  03440002K16Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Lærke

NOR 8376

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 VMG1309.31087.6971.8894.7840.9807.1780.4
52°839.0709.4638.9599.5576.2561.6548.3
60°790.6677.2614.8581.0561.1547.8532.9
75°765.6656.7596.8566.0547.1533.0512.3
90°777.7663.3598.8562.5540.0523.4498.5
110°840.3695.7613.5569.0543.4524.3492.5
120°886.9724.7633.6580.9551.5531.2497.8
135°1005.3797.1685.7614.6572.7547.3511.6
150°1169.0899.8755.7666.1605.9569.1527.6
Run VMG1349.61032.7851.7738.3660.5605.7547.5
Selected Courses
Windward / Leeward1329.41060.1911.7816.5750.7706.4663.9
All purpose1014.5827.1724.8662.3621.7594.9564.8
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward853.80.7028
All purpose689.20.8706
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6276
Downwind "popa"0.7259
70% up, 30% down "Ilhabela"0.6542
30% up, 70% down "Ilhabela-inverso"0.6933
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Predominantly Upwind739.20.8116
Predominantly Downwind711.90.8428
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low920.80.6516
Triple Number All Purpose Medium686.70.8737
Triple Number All Purpose High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Predominantly Upwind739.20.8116
Predominantly Downwind711.90.8428
Predominantly Upwind Low1011.80.5930
Predominantly Upwind Medium761.30.7882
Predominantly Upwind High672.80.8918
Predominantly Downwind Low1027.90.5837
Predominantly Downwind Medium709.20.8461
Predominantly Downwind High573.31.0466
Chicago-Mac Upwind0.7935
Chicago-Mac All Purpose0.8078
Chicago-Mac Downwind0.8254
Bayview-Mac Cove Island0.7459
Bayview-Mac Shore0.7576
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching653.00.9188
Predominantly Reaching Low833.80.7196
Predominantly Reaching Medium651.50.9209
Predominantly Reaching High555.91.0792
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1308.70.4585
5-Band Low / Medium1085.30.5528
5-Band Medium832.40.7208
5-Band Medium / High716.10.8379
5-Band High671.30.8938
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance754.3
Triple Number Coastal/Long Distance Low920.8
Triple Number Coastal/Long Distance Medium686.7
Triple Number Coastal/Long Distance High590.3
Triple Number Windward/Leeward Low1194.7
Triple Number Windward/Leeward Medium852.0
Triple Number Windward/Leeward High701.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6516
Triple Number Coastal/Long Distance Medium0.8737
Triple Number Coastal/Long Distance High1.0164
Triple Number Windward/Leeward Low0.5022
Triple Number Windward/Leeward Medium0.7042
Triple Number Windward/Leeward High0.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low920.8
Triple Number Coastal/Long Distance Medium686.7
Triple Number Coastal/Long Distance High590.3
Triple Number Windward/Leeward Low1194.7
Triple Number Windward/Leeward Medium852.0
Triple Number Windward/Leeward High701.6
Predominantly Upwind739.2
Predominantly Downwind711.9
Predominantly Reaching675.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6516
Triple Number Coastal/Long Distance Medium0.8737
Triple Number Coastal/Long Distance High1.0164
Triple Number Windward/Leeward Low0.5022
Triple Number Windward/Leeward Medium0.7042
Triple Number Windward/Leeward High0.8552
Coastal/Long Distance0.7954
Predominantly Upwind0.8116
Predominantly Downwind0.8428
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6516
Tretall Distanseseilas Mellomvind0.8737
Tretall Distanseseilas Mye vind1.0164
Tretall Pølsebane Lite vind0.5022
Tretall Pølsebane Mellomvind0.7042
Tretall Pølsebane Mye vind0.8552
Distanseseilas ett tall (OSN 8-16kn)0.7954
Distanseseilas ett tall (APH 6-20kn)0.8706
Enkeltall Motvind0.8116
Enkeltall Medvind0.8428
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Coastal/Long Distance754.30.7954
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind739.20.8116
Predominantly Downwind711.90.8428
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore676.70.8867
Cape Doctor Coastal573.91.0455
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6516
Triple Number Coastal/Long Distance Medium0.8737
Triple Number Coastal/Long Distance High1.0164
Triple Number Windward/Leeward Low0.5022
Triple Number Windward/Leeward Medium0.7042
Triple Number Windward/Leeward High0.8552
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6516
Triple Number Coastal/Long Distance Medium0.8737
Triple Number Coastal/Long Distance High1.0164
Triple Number Windward/Leeward Low0.5022
Triple Number Windward/Leeward Medium0.7042
Triple Number Windward/Leeward High0.8552
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Predominantly Upwind739.20.8116
Predominantly Downwind711.90.8428
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance754.30.7954
Triple Number Coastal/Long Distance Low920.80.6516
Triple Number Coastal/Long Distance Medium686.70.8737
Triple Number Coastal/Long Distance High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1331.4996.3819.6709.6645.9601.7542.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low920.80.6516
Triple Number All Purpose Medium686.70.8737
Triple Number All Purpose High590.31.0164
Triple Number Windward/Leeward Low1194.70.5022
Triple Number Windward/Leeward Medium852.00.7042
Triple Number Windward/Leeward High701.60.8552
Predominantly Upwind739.20.8116
Predominantly Downwind711.90.8428
Predominantly Upwind Low1011.80.5930
Predominantly Upwind Medium761.30.7882
Predominantly Upwind High672.80.8918
Predominantly Downwind Low1027.90.5837
Predominantly Downwind Medium709.20.8461
Predominantly Downwind High573.31.0466
Chicago-Mac Upwind0.7935
Chicago-Mac All Purpose0.8078
Chicago-Mac Downwind0.8254
Bayview-Mac Cove Island0.7459
Bayview-Mac Shore0.7576
Harvest Moon Regatta592.01.0135
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy692.70.8661
San Francisco Bay Medium846.80.7085
Predominantly Reaching653.00.9188
Predominantly Reaching Low833.80.7196
Predominantly Reaching Medium651.50.9209
Predominantly Reaching High555.91.0792
Windward/Leeward 60-40 Low1195.50.5019
Windward/Leeward 60-40 Medium876.30.6847
Windward/Leeward 60-40 High736.90.8142
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1308.70.4585
5-Band Low / Medium1085.30.5528
5-Band Medium832.40.7208
5-Band Medium / High716.10.8379
5-Band High671.30.8938
ORC Ref  03440002K16Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Lærke

NOR 8376

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassONE OFF/SPISSGATTEMeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA8.980Max. Beam2.770Draft1.259Displacement5,500Wetted area22.34IMS L8.031LSM08.034Acc. length9.002Sink (kg/mm) 15.27
VCGD-0.300VCGM-0.470RM Rated (kg·m) 128.0Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeSolid 2 blades
InstallationShaft non exposedTwin screwNoHydro generatorNo
PRD0.340PBWPIPA0.0058
PSDPHDPHL
PSAESL
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders0Rotating mastNo
P12.100IG10.970ISP10.970MDT10.120MDL10.200MDT20.000MDL20.000TL0.000MW0.000GO0.000
E4.070J3.410BAS1.000FSD0.000SFJ0.000SPL3.710WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.300Flotation Date01/01/2015MeasurerComment
SFFP0.875FFMFF0.687LCFcl5.044SG0.0000
SAFP8.191FAMFA0.356LCFsh5.237HBI0.479
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002K16Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Lærke

NOR 8376

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment403-2011052115000.130.681.242.253.1826.5221/05/2011
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment403-2011052114450.000.000.000.000.004.8410.22NoNo 25.1821/05/2011189-2006061409420.000.000.000.000.003.059.95NoNo 15.4514/06/2006189-2006061316440.000.000.000.000.002.658.27NoNo 11.1513/06/2006
ORC Ref  03440002K16Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org