Club
One Design
 Certificate
2023

Boat

Langbein

NOR 81

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 Angles43.6°42.0°40.0°38.8°38.4°38.4°39.0°
Beat VMG2.783.393.824.084.184.234.24
52°4.245.075.545.795.925.986.03
60°4.475.275.705.946.096.166.24
75°4.605.405.846.106.306.446.59
90°4.755.616.036.266.396.606.91
110°4.765.656.136.486.777.017.41
120°4.605.516.046.426.787.117.95
135°4.095.045.766.186.546.907.84
150°3.464.425.245.836.216.557.26
Run VMG3.003.844.565.225.736.116.75
Gybe Angles146.9°151.4°154.6°163.7°177.2°179.0°179.0°

APH: 675.7

CDL: 6.069

GPH: 759.2

CertNo: 675964

BOAT
ClassH-boatDesignerHans GroopBuilderBotniaAge date01/1991Series date01/1967Offset filehboat.odData file675964
HULL
Length Overall8.310 mMaximum Beam2.188 mDraft1.269 mDisplacement1,454 kgDLR6.6209IMS DivisionSportboatDynamic Allowance0.280%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight300 kgMinimum weight215 kg * when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail15.5515.85Headsail Luffed10.4810.48Headsail FlyingSymmetric32.1232.12Asymmetric
STORM SAIL AREAS (m²)
Trysail4.57Storm Jib3.16Heavy Weather Jib8.52
SAIL LIMITS
Headsails5 * Woven polyester sails  Spinnakers4
STABILITY
Righting Moment18.6 kg·mStability Index118.9
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  03440002SJCIssued on 19/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
One Design
 Certificate
2023

Boat

Langbein

NOR 81

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 VMG1294.71061.5941.3882.9861.9851.2849.4
52°848.6709.7650.0622.0608.6602.2597.1
60°805.7682.9631.2605.7591.3584.0577.1
75°782.0667.1616.3589.8571.6558.7546.5
90°758.3641.9596.6574.7563.1545.8520.7
110°755.6637.3587.2555.7531.8513.5485.7
120°783.2652.8595.9560.3531.2506.0452.7
135°879.1714.5624.9582.9550.7521.7459.2
150°1040.3813.6686.8617.1579.9549.9496.0
Run VMG1201.3938.5789.3690.3628.0589.4533.5
Selected Courses
Windward / Leeward1248.01000.0865.3786.6744.9720.3691.5
All purpose958.5784.9698.0650.6624.6605.9578.8
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward827.00.7255
All purpose675.70.8880
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6229
Downwind "popa"0.7821
70% up, 30% down "Ilhabela"0.6634
30% up, 70% down "Ilhabela-inverso"0.7264
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Predominantly Upwind735.20.8162
Predominantly Downwind680.40.8818
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low871.70.6883
Triple Number All Purpose Medium671.10.8941
Triple Number All Purpose High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Predominantly Upwind735.20.8162
Predominantly Downwind680.40.8818
Predominantly Upwind Low979.20.6127
Predominantly Upwind Medium761.20.7882
Predominantly Upwind High710.50.8445
Predominantly Downwind Low943.90.6356
Predominantly Downwind Medium670.10.8953
Predominantly Downwind High558.51.0743
Chicago-Mac Upwind0.8009
Chicago-Mac All Purpose0.8306
Chicago-Mac Downwind0.8666
Bayview-Mac Cove Island0.7705
Bayview-Mac Shore0.7752
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching641.20.9358
Predominantly Reaching Low785.10.7642
Predominantly Reaching Medium635.00.9449
Predominantly Reaching High561.91.0677
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1228.90.4882
5-Band Low / Medium1024.40.5857
5-Band Medium805.00.7453
5-Band Medium / High725.10.8274
5-Band High696.40.8615
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance734.5
Triple Number Coastal/Long Distance Low871.7
Triple Number Coastal/Long Distance Medium671.1
Triple Number Coastal/Long Distance High600.4
Triple Number Windward/Leeward Low1124.0
Triple Number Windward/Leeward Medium820.2
Triple Number Windward/Leeward High715.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6883
Triple Number Coastal/Long Distance Medium0.8941
Triple Number Coastal/Long Distance High0.9993
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7315
Triple Number Windward/Leeward High0.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low871.7
Triple Number Coastal/Long Distance Medium671.1
Triple Number Coastal/Long Distance High600.4
Triple Number Windward/Leeward Low1124.0
Triple Number Windward/Leeward Medium820.2
Triple Number Windward/Leeward High715.6
Predominantly Upwind735.2
Predominantly Downwind680.4
Predominantly Reaching655.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6883
Triple Number Coastal/Long Distance Medium0.8941
Triple Number Coastal/Long Distance High0.9993
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7315
Triple Number Windward/Leeward High0.8384
Coastal/Long Distance0.8169
Predominantly Upwind0.8162
Predominantly Downwind0.8818
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6883
Tretall Distanseseilas Mellomvind0.8941
Tretall Distanseseilas Mye vind0.9993
Tretall Pølsebane Lite vind0.5338
Tretall Pølsebane Mellomvind0.7315
Tretall Pølsebane Mye vind0.8384
Distanseseilas ett tall (OSN 8-16kn)0.8169
Distanseseilas ett tall (APH 6-20kn)0.8880
Enkeltall Motvind0.8162
Enkeltall Medvind0.8818
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Coastal/Long Distance734.50.8169
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind735.20.8162
Predominantly Downwind680.40.8818
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore700.10.8570
Cape Doctor Coastal587.01.0222
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6883
Triple Number Coastal/Long Distance Medium0.8941
Triple Number Coastal/Long Distance High0.9993
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7315
Triple Number Windward/Leeward High0.8384
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6883
Triple Number Coastal/Long Distance Medium0.8941
Triple Number Coastal/Long Distance High0.9993
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7315
Triple Number Windward/Leeward High0.8384
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Predominantly Upwind735.20.8162
Predominantly Downwind680.40.8818
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance734.50.8169
Triple Number Coastal/Long Distance Low871.70.6883
Triple Number Coastal/Long Distance Medium671.10.8941
Triple Number Coastal/Long Distance High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1243.3939.6782.7693.4647.8611.5549.5
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low871.70.6883
Triple Number All Purpose Medium671.10.8941
Triple Number All Purpose High600.40.9993
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.20.7315
Triple Number Windward/Leeward High715.60.8384
Predominantly Upwind735.20.8162
Predominantly Downwind680.40.8818
Predominantly Upwind Low979.20.6127
Predominantly Upwind Medium761.20.7882
Predominantly Upwind High710.50.8445
Predominantly Downwind Low943.90.6356
Predominantly Downwind Medium670.10.8953
Predominantly Downwind High558.51.0743
Chicago-Mac Upwind0.8009
Chicago-Mac All Purpose0.8306
Chicago-Mac Downwind0.8666
Bayview-Mac Cove Island0.7705
Bayview-Mac Shore0.7752
Harvest Moon Regatta584.11.0272
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy704.00.8523
San Francisco Bay Medium816.60.7347
Predominantly Reaching641.20.9358
Predominantly Reaching Low785.10.7642
Predominantly Reaching Medium635.00.9449
Predominantly Reaching High561.91.0677
Windward/Leeward 60-40 Low1134.80.5287
Windward/Leeward 60-40 Medium851.50.7047
Windward/Leeward 60-40 High762.40.7869
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1228.90.4882
5-Band Low / Medium1024.40.5857
5-Band Medium805.00.7453
5-Band Medium / High725.10.8274
5-Band High696.40.8615
ORC Ref  03440002SJCIssued on 19/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
One Design
 Certificate
2023

Boat

Langbein

NOR 81

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassH-boatMeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA8.310Max. Beam2.188Draft1.269Displacement1,454Wetted area10.83IMS L6.417LSM06.033Acc. length7.111Sink (kg/mm) 7.27
VCGD-0.149VCGM-0.116RM Rated (kg·m) 18.6Limit of positive stability(°) 120.8Stability Index118.9
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P8.700IG7.940ISP8.040MDT10.080MDL10.116MDT20.050MDL20.070TL1.550MW0.116GO0.116
E3.000J2.470BAS0.900FSD0.000SFJ0.720SPL2.495WPLTPS0.000BD0.090MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date05/02/2021MeasurerComment
SFFP0.419FFM0.850FF0.857LCFcl4.405SG1.0000
SAFP8.053FAM0.640FA0.644LCFsh4.545HBI0.690
W118.0W218.0W318.0W418.0
PD1535.1PD2534.0PD3536.0PD4537.0
WD7.050PLM9000.00GSA1.0RSA1.0RM18.7
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002SJCIssued on 19/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
One Design
 Certificate
2023

Boat

Langbein

NOR 81

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.120.651.111.9115.55Class Rules
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.052.727.58NoNo 10.48Class rules
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment17.307.307.305.404.8032.12Class rules
ORC Ref  03440002SJCIssued on 19/09/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org