Double HandedClub Certificate2025
Madam LarsenNOR 7213
Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles43.0°43.0°41.0°39.9°39.4°39.2°39.3°40.0°42.3°
Beat VMG2.303.143.784.174.334.404.434.394.19
52°3.564.755.576.026.236.316.356.366.28
60°3.774.985.766.206.416.506.556.596.55
75°3.915.145.906.336.586.756.846.967.00
90°3.815.055.876.386.646.887.077.317.46
110°3.695.015.966.496.857.157.377.677.74
120°3.524.835.826.426.817.177.508.068.47
135°3.084.295.306.126.596.977.368.189.64
150°2.503.624.655.546.226.647.007.768.78
Run VMG2.163.144.034.815.536.076.487.177.88
Gybe Angles147.4°147.4°151.4°153.8°161.5°168.2°176.3°177.2°174.8°
APH ToD:632.9CDL: 7.055APH ToT: 0.9481CertNo:5176
BOAT
ClassLARSEN 28DesignerHansÅgeLarsenBuilderNyboatAge date01/1987Series date01/1985Offset fileLARS28.OFFData file5176
HULL
Length Overall8.823 mMaximum Beam2.648 mDraft1.538 mDisplacement2,716 kgDLR6.2822IMS DivisionCruiser/RacerDynamic Allowance0.270%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.340m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail22.4022.79Headsail Luffed22.2722.27Headsail FlyingSymmetric48.5248.52Asymmetric
STORM SAIL AREAS (m²)
Trysail6.80Storm Jib4.64Heavy Weather Jib12.52
SAIL LIMITS
Headsails5Spinnakers4
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.
Double HandedClub Certificate2025
Madam LarsenNOR 7213
Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1567.81146.1953.3863.3830.7817.8813.5820.4858.3
52°1012.0757.3646.8597.6578.2570.9567.3565.7573.3
60°954.7722.4624.7581.0562.1554.2549.9546.1549.4
75°920.4700.8610.1568.6546.9533.5526.0516.9514.5
90°944.4713.0613.3564.1542.3523.6509.3492.3482.9
110°976.7718.8604.2554.4525.3503.2488.4469.6465.0
120°1022.7745.2619.0561.1528.6502.1479.7446.6424.9
135°1169.4839.1679.1588.5546.5516.3489.3440.2373.4
150°1440.6994.2774.3650.0579.1542.4514.0463.7409.8
Run VMG1667.91148.0893.0747.9650.7593.3555.5502.4457.0
Selected Courses
Windward / Leeward1615.41147.1923.2805.6740.7705.6684.5661.4657.6
All purpose1216.5883.5728.7650.6610.8587.9572.6552.7543.0
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward775.60.7736
All purpose632.90.9481
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6725
Downwind "popa"0.8250
70% up, 30% down "Ilhabela"0.7120
30% up, 70% down "Ilhabela-inverso"0.7725
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Predominantly Upwind685.90.8748
Predominantly Downwind639.70.9379
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low806.10.7444
Triple Number AP Medium628.20.9551
Triple Number AP High569.01.0545
Triple Number Windward/Leeward Low1081.60.5547
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Single Number Predominant Upwind712.70.8419
Single Number Predominant Reaching629.40.9533
Single Number Predominant Downwind668.40.8976
Predominant Upwind - Low960.80.6245
Predominant Upwind - Low/Med743.50.8070
Predominant Upwind - Medium665.00.9023
Predominant Upwind - Med/High630.30.9520
Predominant Upwind - High619.50.9685
Predominant Downwind Low983.80.6099
Predominant Downwind Low/Med725.90.8266
Predominant Downwind Medium616.50.9733
Predominant Downwind Med/High550.91.0892
Predominant Downwind High512.31.1712
Predominant Reaching Low866.50.6924
Predominant Reaching Low/Med666.80.8998
Predominant Reaching Medium589.01.0187
Predominant Reaching Med/High544.31.1023
Predominant Reaching High518.41.1573
SA/DSPL Upwind22.87SA/DSPL Downwind36.31
Scoring OptionTODTOT
5-Band Windward/Leeward Low1208.80.4964
5-Band Windward/Leeward Low/Med887.80.6759
5-Band Windward/Leeward Medium756.10.7935
5-Band Windward/Leeward Med/High688.90.8710
5-Band Windward/Leeward High664.70.9026
Windward/Leeward 60-40 Low1207.70.4968
Windward/Leeward 60-40 Low/Med896.60.6692
Windward/Leeward 60-40 Medium773.40.7758
Windward/Leeward 60-40 Med/High714.50.8398
Windward/Leeward 60-40 High696.90.8609
5-Band AP Low891.70.6729
5-Band AP Low/Med706.50.8492
5-Band AP Medium620.20.9675
5-Band AP Med/High575.01.0434
5-Band AP High554.51.0821
5-Band SF Bay Tour - Low1040.00.5769
5-Band SF Bay Tour - Low/Med849.50.7063
5-Band SF Bay Tour - Medium732.80.8188
5-Band SF Bay Tour - Med/High674.90.8890
5-Band SF Bay Tour - High653.10.9187
Chicago-Mac Upwind0.8190
Chicago-Mac All Purpose0.8445
Chicago-Mac Downwind0.8649
Bayview-Mac Cove Island0.6210
Bayview-Mac Shore0.6261
Harvest Moon Regatta548.01.0949
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance687.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating687.70.8725
FinRating, kevyt tuuli1188.40.8415
FinRating, kova tuuli557.80.8964
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8725
Triple Number Coastal/Long Distance Low0.7444
Triple Number Coastal/Long Distance Medium0.9552
Triple Number Coastal/Long Distance High1.0545
Triple Number Windward/Leeward Low0.5796
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
For information
General Purpose Handicap (GPH)708.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low806.0
Triple Number Coastal/Long Distance Medium628.1
Triple Number Coastal/Long Distance High569.0
Triple Number Windward/Leeward Low1035.2
Triple Number Windward/Leeward Medium768.7
Triple Number Windward/Leeward High681.1
Predominantly Upwind685.9
Predominantly Downwind639.7
Predominantly Reaching615.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7444
Triple Number Coastal/Long Distance Medium0.9552
Triple Number Coastal/Long Distance High1.0545
Triple Number Windward/Leeward Low0.5796
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.8809
Coastal/Long Distance0.8725
Predominantly Upwind0.8748
Predominantly Downwind0.9379
For information
General Purpose Handicap (GPH)708.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9481
Distanseseilas Trippeltall svak vind0.7444
Distanseseilas Trippeltall mellomvind0.9552
Distanseseilas Trippeltall sterk vind1.0545
Pølsebane Trippeltall svak vind0.5796
Pølsebane Trippeltall mellomvind0.7805
Pølsebane Trippeltall sterk vind0.8809
Motvind Singeltall0.8748
Medvind Singeltall0.9379
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Coastal/Long Distance687.70.8725
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind685.90.8748
Predominantly Downwind639.70.9379
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore658.80.9108
Cape Doctor Coastal546.01.0990
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7444
Triple Number Coastal/Long Distance Medium0.9552
Triple Number Coastal/Long Distance High1.0545
Triple Number Windward/Leeward Low0.5796
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.8809
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7444
Triple Number Coastal/Long Distance Medium0.9552
Triple Number Coastal/Long Distance High1.0545
Triple Number Windward/Leeward Low0.5796
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.8809
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Predominantly Upwind685.90.8748
Predominantly Downwind639.70.9379
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.70.8725
Triple Number Coastal/Long Distance Low806.00.7444
Triple Number Coastal/Long Distance Medium628.10.9552
Triple Number Coastal/Long Distance High569.01.0545
Triple Number Windward/Leeward Low1035.20.5796
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1718.81147.2870.1729.4651.5610.3577.7525.3512.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low806.10.7444
Triple Number AP Medium628.20.9551
Triple Number AP High569.01.0545
Triple Number Windward/Leeward Low1081.60.5547
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High681.10.8809
Single Number Predominant Upwind712.70.8419
Single Number Predominant Reaching629.40.9533
Single Number Predominant Downwind668.40.8976
Predominant Upwind - Low960.80.6245
Predominant Upwind - Low/Med743.50.8070
Predominant Upwind - Medium665.00.9023
Predominant Upwind - Med/High630.30.9520
Predominant Upwind - High619.50.9685
Predominant Downwind Low983.80.6099
Predominant Downwind Low/Med725.90.8266
Predominant Downwind Medium616.50.9733
Predominant Downwind Med/High550.91.0892
Predominant Downwind High512.31.1712
Predominant Reaching Low866.50.6924
Predominant Reaching Low/Med666.80.8998
Predominant Reaching Medium589.01.0187
Predominant Reaching Med/High544.31.1023
Predominant Reaching High518.41.1573
SA/DSPL Upwind22.87SA/DSPL Downwind36.31
Scoring OptionTODTOT
5-Band Windward/Leeward Low1208.80.4964
5-Band Windward/Leeward Low/Med887.80.6759
5-Band Windward/Leeward Medium756.10.7935
5-Band Windward/Leeward Med/High688.90.8710
5-Band Windward/Leeward High664.70.9026
Windward/Leeward 60-40 Low1207.70.4968
Windward/Leeward 60-40 Low/Med896.60.6692
Windward/Leeward 60-40 Medium773.40.7758
Windward/Leeward 60-40 Med/High714.50.8398
Windward/Leeward 60-40 High696.90.8609
5-Band AP Low891.70.6729
5-Band AP Low/Med706.50.8492
5-Band AP Medium620.20.9675
5-Band AP Med/High575.01.0434
5-Band AP High554.51.0821
5-Band SF Bay Tour - Low1040.00.5769
5-Band SF Bay Tour - Low/Med849.50.7063
5-Band SF Bay Tour - Medium732.80.8188
5-Band SF Bay Tour - Med/High674.90.8890
5-Band SF Bay Tour - High653.10.9187
Chicago-Mac Upwind0.8190
Chicago-Mac All Purpose0.8445
Chicago-Mac Downwind0.8649
Bayview-Mac Cove Island0.6210
Bayview-Mac Shore0.6261
Harvest Moon Regatta548.01.0949
Double HandedClub Certificate2025
Madam LarsenNOR 7213
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassLARSEN 28MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA8.823Max. Beam2.648Draft1.538Displacement2,716Wetted area16.01IMS L7.648LSM07.561Acc. length8.606Sink (kg/mm) 12.28
VCGD-0.080VCGM-0.022RM Rated (kg·m) 53.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.340PBWPIPA0.0036
EDL0.770ST10.070ST20.180
ST30.180ST40.110ST50.300
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders1Rotating mastNo
P10.500IG9.600ISP9.600MDT10.100MDL10.130MDT20.090MDL20.090TL2.250MW0.130GO0.140
E3.700J3.380BAS1.130FSDFoilSFJ0.000SPL3.430WPLTPS0.000BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.080Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
Madam LarsenNOR 7213
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment5176-2004012412000.120.001.282.233.0022.4001/01/1753
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment5176-2004012412010.000.000.000.000.004.619.49NoNo 22.2701/01/1753
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment5176-2004012412029.439.439.430.000.0048.5201/01/1753
CRUISER/RACER REQUIREMENTS*
Accommodation length8.6 mTable area0.33 m²Headroom1.55 mMinimum number of berths3Personal gear stowage0.12 m³Fresh water capacity39 lMinimum number of seats in cockpit3Food stowage0.18 m³Fuel capacity22 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.