Club
Certificate
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°4.715.636.256.596.826.977.15
110°4.765.706.316.676.957.207.60
120°4.615.556.216.596.887.157.64
135°4.145.085.856.356.686.967.49
150°3.534.495.295.956.396.697.20
Run VMG3.053.904.615.265.836.286.84
Gybe Angles146.9°152.0°155.6°161.3°173.6°178.1°179.0°

APH: 663.9

CDL: 6.802

GPH: 748.6

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 kgDLR10.6019IMS DivisionCruiser/RacerDynamic Allowance0.720%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 FlyingSymmetric58.0458.04Asymmetric
STORM SAIL AREAS (m²)
Trysail8.62Storm Jib6.02Heavy Weather Jib16.25
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  03440002JVVIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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 VMG1309.41087.6971.8894.7840.9807.1780.3
52°839.1709.4638.9599.5576.2561.6548.3
60°790.7677.2614.8581.0561.1547.7532.9
75°765.7656.8596.8566.0547.0533.0512.2
90°764.7639.5576.3546.1527.8516.2503.3
110°755.8632.1570.6539.8518.1499.9474.0
120°780.7648.8579.9546.1523.3503.4470.9
135°869.4709.4615.5566.8539.0517.5480.8
150°1020.6801.3680.6605.3563.8538.4499.9
Run VMG1178.5923.9781.2684.4617.2573.6526.0
Selected Courses
Windward / Leeward1244.01005.8876.5789.5729.0690.4653.2
All purpose954.3785.6694.6639.9604.6581.3554.3
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward822.40.7295
All purpose663.90.9037
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6276
Downwind "popa"0.7947
70% up, 30% down "Ilhabela"0.6699
30% up, 70% down "Ilhabela-inverso"0.7360
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Predominantly Upwind724.50.8282
Predominantly Downwind669.50.8962
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low869.90.6897
Triple Number All Purpose Medium661.40.9071
Triple Number All Purpose High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Predominantly Upwind724.50.8282
Predominantly Downwind669.50.8962
Predominantly Upwind Low984.90.6092
Predominantly Upwind Medium755.90.7937
Predominantly Upwind High670.40.8950
Predominantly Downwind Low935.50.6414
Predominantly Downwind Medium658.20.9115
Predominantly Downwind High548.01.0950
Chicago-Mac Upwind0.8099
Chicago-Mac All Purpose0.8415
Chicago-Mac Downwind0.8796
Bayview-Mac Cove Island0.7776
Bayview-Mac Shore0.7826
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching626.50.9577
Predominantly Reaching Low782.20.7670
Predominantly Reaching Medium620.60.9668
Predominantly Reaching High541.61.1079
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1225.60.4895
5-Band Low / Medium1028.40.5834
5-Band Medium803.60.7466
5-Band Medium / High699.00.8584
5-Band High659.60.9096
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance725.3
Triple Number Coastal/Long Distance Low869.9
Triple Number Coastal/Long Distance Medium661.4
Triple Number Coastal/Long Distance High577.0
Triple Number Windward/Leeward Low1124.9
Triple Number Windward/Leeward Medium821.5
Triple Number Windward/Leeward High686.1
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6897
Triple Number Coastal/Long Distance Medium0.9071
Triple Number Coastal/Long Distance High1.0399
Triple Number Windward/Leeward Low0.5334
Triple Number Windward/Leeward Medium0.7304
Triple Number Windward/Leeward High0.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low869.9
Triple Number Coastal/Long Distance Medium661.4
Triple Number Coastal/Long Distance High577.0
Triple Number Windward/Leeward Low1124.9
Triple Number Windward/Leeward Medium821.5
Triple Number Windward/Leeward High686.1
Predominantly Upwind724.5
Predominantly Downwind669.5
Predominantly Reaching641.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6897
Triple Number Coastal/Long Distance Medium0.9071
Triple Number Coastal/Long Distance High1.0399
Triple Number Windward/Leeward Low0.5334
Triple Number Windward/Leeward Medium0.7304
Triple Number Windward/Leeward High0.8745
Coastal/Long Distance0.8272
Predominantly Upwind0.8282
Predominantly Downwind0.8962
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6897
Tretall Distanseseilas Mellomvind0.9071
Tretall Distanseseilas Mye vind1.0399
Tretall Pølsebane Lite vind0.5334
Tretall Pølsebane Mellomvind0.7304
Tretall Pølsebane Mye vind0.8745
Distanseseilas ett tall (OSN 8-16kn)0.8272
Distanseseilas ett tall (APH 6-20kn)0.9037
Enkeltall Motvind0.8282
Enkeltall Medvind0.8962
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Coastal/Long Distance725.30.8272
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind724.50.8282
Predominantly Downwind669.50.8962
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore664.30.9032
Cape Doctor Coastal562.41.0669
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6897
Triple Number Coastal/Long Distance Medium0.9071
Triple Number Coastal/Long Distance High1.0399
Triple Number Windward/Leeward Low0.5334
Triple Number Windward/Leeward Medium0.7304
Triple Number Windward/Leeward High0.8745
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6897
Triple Number Coastal/Long Distance Medium0.9071
Triple Number Coastal/Long Distance High1.0399
Triple Number Windward/Leeward Low0.5334
Triple Number Windward/Leeward Medium0.7304
Triple Number Windward/Leeward High0.8745
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Predominantly Upwind724.50.8282
Predominantly Downwind669.50.8962
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8272
Triple Number Coastal/Long Distance Low869.90.6897
Triple Number Coastal/Long Distance Medium661.40.9071
Triple Number Coastal/Long Distance High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.4943.0785.7685.5627.7587.2532.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low869.90.6897
Triple Number All Purpose Medium661.40.9071
Triple Number All Purpose High577.01.0399
Triple Number Windward/Leeward Low1124.90.5334
Triple Number Windward/Leeward Medium821.50.7304
Triple Number Windward/Leeward High686.10.8745
Predominantly Upwind724.50.8282
Predominantly Downwind669.50.8962
Predominantly Upwind Low984.90.6092
Predominantly Upwind Medium755.90.7937
Predominantly Upwind High670.40.8950
Predominantly Downwind Low935.50.6414
Predominantly Downwind Medium658.20.9115
Predominantly Downwind High548.01.0950
Chicago-Mac Upwind0.8099
Chicago-Mac All Purpose0.8415
Chicago-Mac Downwind0.8796
Bayview-Mac Cove Island0.7776
Bayview-Mac Shore0.7826
Harvest Moon Regatta569.61.0534
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy677.30.8859
San Francisco Bay Medium815.10.7361
Predominantly Reaching626.50.9577
Predominantly Reaching Low782.20.7670
Predominantly Reaching Medium620.60.9668
Predominantly Reaching High541.61.1079
Windward/Leeward 60-40 Low1139.60.5265
Windward/Leeward 60-40 Medium856.00.7009
Windward/Leeward 60-40 High726.70.8256
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1225.60.4895
5-Band Low / Medium1028.40.5834
5-Band Medium803.60.7466
5-Band Medium / High699.00.8584
5-Band High659.60.9096
ORC Ref  03440002JVVIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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 L8.033LSM08.034Acc. 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  03440002JVVIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment189-20140519203010.9010.9010.906.476.0758.0419/05/2014189-20120605165710.8310.8310.835.540.0052.0505/06/2012
ORC Ref  03440002JVVIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org