Club
Certificate
Double Handed
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 Angles45.6°43.8°43.2°43.0°42.4°42.0°41.8°
Beat VMG2.743.293.693.994.224.364.48
52°4.265.045.595.976.236.386.52
60°4.555.295.836.196.416.576.73
75°4.705.486.026.366.596.777.02
90°4.705.616.246.596.826.967.17
110°4.775.706.326.686.977.227.61
120°4.625.566.226.616.907.187.68
135°4.165.105.876.376.716.997.54
150°3.554.515.315.976.416.727.25
Run VMG3.073.914.625.275.846.296.87
Gybe Angles146.9°152.0°155.0°161.0°173.6°177.2°179.0°

APH: 665.6

CDL: 6.734

GPH: 750.2

CertNo: 5713

BOAT
ClassONE OFF/SPISSGATTEDesignerBuilderKais BåtbyggeriAge date01/1991Series date01/1991Offset filecl_laerke.OFFData file5713
HULL
Length Overall8.980 mMaximum Beam2.770 mDraft1.242 mDisplacement5,500 kgDLR10.6341IMS DivisionCruiser/RacerDynamic Allowance0.720%Age Allowance0.487%
PROPELLER
InstallationShaft non exposedTypeSolid 2 bladesDiameter0.340m
CREW
Maximum weight170 kgMinimum weight120 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  03440002K01Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
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 VMG1315.81093.2976.8901.8853.0826.4803.5
52°844.5714.8644.0602.6578.2563.9551.9
60°791.9680.6617.1582.0561.3548.1535.1
75°766.1657.4598.2565.9546.2532.1512.9
90°766.4641.2577.0545.9528.1517.4502.4
110°755.4631.4569.8538.5516.5498.7473.3
120°778.4647.1578.4544.4521.4501.3468.8
135°864.6706.5613.3564.8536.7514.9477.7
150°1015.5798.3678.3603.5561.9536.0496.7
Run VMG1172.6920.6778.8682.9616.3572.4523.8
Selected Courses
Windward / Leeward1244.21006.9877.8792.4734.6699.4663.6
All purpose954.6786.6695.6641.1606.7584.9558.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward826.20.7262
All purpose665.60.9015
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6203
Downwind "popa"0.7974
70% up, 30% down "Ilhabela"0.6646
30% up, 70% down "Ilhabela-inverso"0.7345
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Predominantly Upwind728.30.8238
Predominantly Downwind669.20.8966
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low870.60.6892
Triple Number All Purpose Medium662.80.9053
Triple Number All Purpose High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Predominantly Upwind728.30.8238
Predominantly Downwind669.20.8966
Predominantly Upwind Low988.20.6072
Predominantly Upwind Medium760.70.7887
Predominantly Upwind High680.20.8820
Predominantly Downwind Low933.80.6425
Predominantly Downwind Medium657.00.9132
Predominantly Downwind High547.01.0969
Chicago-Mac Upwind0.8056
Chicago-Mac All Purpose0.8397
Chicago-Mac Downwind0.8800
Bayview-Mac Cove Island0.7766
Bayview-Mac Shore0.7810
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching627.40.9564
Predominantly Reaching Low782.70.7666
Predominantly Reaching Medium621.00.9662
Predominantly Reaching High542.21.1067
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1225.90.4894
5-Band Low / Medium1029.40.5829
5-Band Medium807.00.7435
5-Band Medium / High707.10.8485
5-Band High669.80.8958
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance727.1
Triple Number Coastal/Long Distance Low870.6
Triple Number Coastal/Long Distance Medium662.8
Triple Number Coastal/Long Distance High580.6
Triple Number Windward/Leeward Low1125.5
Triple Number Windward/Leeward Medium824.3
Triple Number Windward/Leeward High694.8
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6892
Triple Number Coastal/Long Distance Medium0.9053
Triple Number Coastal/Long Distance High1.0335
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7279
Triple Number Windward/Leeward High0.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low870.6
Triple Number Coastal/Long Distance Medium662.8
Triple Number Coastal/Long Distance High580.6
Triple Number Windward/Leeward Low1125.5
Triple Number Windward/Leeward Medium824.3
Triple Number Windward/Leeward High694.8
Predominantly Upwind728.3
Predominantly Downwind669.2
Predominantly Reaching642.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6892
Triple Number Coastal/Long Distance Medium0.9053
Triple Number Coastal/Long Distance High1.0335
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7279
Triple Number Windward/Leeward High0.8636
Coastal/Long Distance0.8252
Predominantly Upwind0.8238
Predominantly Downwind0.8966
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6892
Tretall Distanseseilas Mellomvind0.9053
Tretall Distanseseilas Mye vind1.0335
Tretall Pølsebane Lite vind0.5331
Tretall Pølsebane Mellomvind0.7279
Tretall Pølsebane Mye vind0.8636
Distanseseilas ett tall (OSN 8-16kn)0.8252
Distanseseilas ett tall (APH 6-20kn)0.9015
Enkeltall Motvind0.8238
Enkeltall Medvind0.8966
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Coastal/Long Distance727.10.8252
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind728.30.8238
Predominantly Downwind669.20.8966
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore674.40.8897
Cape Doctor Coastal566.61.0590
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6892
Triple Number Coastal/Long Distance Medium0.9053
Triple Number Coastal/Long Distance High1.0335
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7279
Triple Number Windward/Leeward High0.8636
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6892
Triple Number Coastal/Long Distance Medium0.9053
Triple Number Coastal/Long Distance High1.0335
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7279
Triple Number Windward/Leeward High0.8636
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Predominantly Upwind728.30.8238
Predominantly Downwind669.20.8966
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance727.10.8252
Triple Number Coastal/Long Distance Low870.60.6892
Triple Number Coastal/Long Distance Medium662.80.9053
Triple Number Coastal/Long Distance High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1237.1943.9786.7687.1630.0590.4533.8
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low870.60.6892
Triple Number All Purpose Medium662.80.9053
Triple Number All Purpose High580.61.0335
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium824.30.7279
Triple Number Windward/Leeward High694.80.8636
Predominantly Upwind728.30.8238
Predominantly Downwind669.20.8966
Predominantly Upwind Low988.20.6072
Predominantly Upwind Medium760.70.7887
Predominantly Upwind High680.20.8820
Predominantly Downwind Low933.80.6425
Predominantly Downwind Medium657.00.9132
Predominantly Downwind High547.01.0969
Chicago-Mac Upwind0.8056
Chicago-Mac All Purpose0.8397
Chicago-Mac Downwind0.8800
Bayview-Mac Cove Island0.7766
Bayview-Mac Shore0.7810
Harvest Moon Regatta569.01.0544
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy685.80.8749
San Francisco Bay Medium818.30.7332
Predominantly Reaching627.40.9564
Predominantly Reaching Low782.70.7666
Predominantly Reaching Medium621.00.9662
Predominantly Reaching High542.21.1067
Windward/Leeward 60-40 Low1141.30.5257
Windward/Leeward 60-40 Medium860.40.6973
Windward/Leeward 60-40 High738.90.8120
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1225.90.4894
5-Band Low / Medium1029.40.5829
5-Band Medium807.00.7435
5-Band Medium / High707.10.8485
5-Band High669.80.8958
ORC Ref  03440002K01Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
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. Beam2.770Draft1.242Displacement5,500Wetted area22.32IMS L7.984LSM08.026Acc. length9.002Sink (kg/mm) 15.21
VCGD-0.300VCGM-0.469RM Rated (kg·m) 127.0Limit 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
SFFP0.875FFMFF0.646LCFcl4.978SG0.0000
SAFP8.191FAMFA0.387LCFsh5.173HBI0.463
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002K01Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
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  03440002K01Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org