Double HandedClub Certificate2025
SkvalpeNOR 9049
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°40.2°40.1°39.7°39.7°40.3°42.0°
Beat VMG2.263.093.704.084.284.364.404.384.23
52°3.504.685.485.946.176.286.336.356.29
60°3.714.925.706.136.356.476.536.576.55
75°3.865.085.866.286.526.696.806.926.96
90°3.745.025.916.366.576.786.967.217.36
110°3.805.146.066.536.847.097.257.497.52
120°3.654.985.956.496.837.137.407.828.12
135°3.224.495.526.236.656.997.338.038.99
150°2.663.834.885.746.336.707.037.708.60
Run VMG2.313.324.235.015.666.176.557.167.79
Gybe Angles146.9°146.9°151.2°155.0°162.6°169.6°177.2°177.9°176.3°
APH ToD:632.3CDL: 7.014APH ToT: 0.9489CertNo:6754
BOAT
ClassMAMBA 311DesignerBengtKarlssonBuilderBK Marin AbAge date01/1984Series date01/1983Offset fileScale_Mamba31.offData file6754
HULL
Length Overall9.325 mMaximum Beam3.082 mDraft1.613 mDisplacement3,502 kgDLR7.9165IMS DivisionCruiser/RacerDynamic Allowance0.330%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail23.1523.53Headsail Luffed23.6923.69Headsail FlyingSymmetric56.7356.73Asymmetric
STORM SAIL AREAS (m²)
Trysail7.09Storm Jib6.28Heavy Weather Jib16.94
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
SkvalpeNOR 9049
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 VMG1590.91165.1971.7881.4840.5824.8818.0822.3850.7
52°1027.2769.0656.9605.6583.1573.4568.8566.8572.5
60°969.6732.1631.7587.4567.0556.4551.5547.7549.9
75°933.7708.1614.3573.1551.9538.4529.1520.2517.2
90°963.6716.5609.0565.7547.8530.8517.5499.1489.2
110°946.5701.1594.3551.4526.6508.0496.8480.6478.7
120°986.6722.9605.2555.1527.0505.1486.4460.4443.2
135°1118.0801.5652.2578.1541.4514.8491.4448.3400.5
150°1351.7939.1737.2626.9569.2537.1512.0467.3418.6
Run VMG1561.81084.4850.5718.4635.9583.9549.9502.6461.9
Selected Courses
Windward / Leeward1574.71124.7911.1799.9738.2704.3683.9662.4656.3
All purpose1197.4871.5721.5648.9611.5589.8575.4557.2548.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward771.20.7780
All purpose632.30.9489
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6642
Downwind "popa"0.8527
70% up, 30% down "Ilhabela"0.7114
30% up, 70% down "Ilhabela-inverso"0.7858
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Predominantly Upwind688.60.8713
Predominantly Downwind631.70.9499
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low796.50.7533
Triple Number AP Medium627.80.9558
Triple Number AP High572.21.0486
Triple Number Windward/Leeward Low1062.60.5646
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Single Number Predominant Upwind716.00.8380
Single Number Predominant Reaching628.50.9546
Single Number Predominant Downwind659.40.9099
Predominant Upwind - Low962.40.6235
Predominant Upwind - Low/Med746.90.8034
Predominant Upwind - Medium668.80.8971
Predominant Upwind - Med/High633.30.9474
Predominant Upwind - High622.20.9643
Predominant Downwind Low952.40.6300
Predominant Downwind Low/Med709.80.8453
Predominant Downwind Medium610.60.9826
Predominant Downwind Med/High551.31.0883
Predominant Downwind High517.01.1604
Predominant Reaching Low856.10.7008
Predominant Reaching Low/Med661.50.9070
Predominant Reaching Medium589.21.0183
Predominant Reaching Med/High548.01.0950
Predominant Reaching High524.21.1446
SA/DSPL Upwind20.22SA/DSPL Downwind34.49
Scoring OptionTODTOT
5-Band Windward/Leeward Low1184.20.5067
5-Band Windward/Leeward Low/Med877.80.6835
5-Band Windward/Leeward Medium752.70.7971
5-Band Windward/Leeward Med/High688.30.8717
5-Band Windward/Leeward High665.10.9021
Windward/Leeward 60-40 Low1192.00.5034
Windward/Leeward 60-40 Low/Med892.10.6726
Windward/Leeward 60-40 Medium772.90.7763
Windward/Leeward 60-40 Med/High715.00.8392
Windward/Leeward 60-40 High697.40.8604
5-Band AP Low876.30.6847
5-Band AP Low/Med701.70.8550
5-Band AP Medium620.20.9674
5-Band AP Med/High577.81.0384
5-Band AP High558.81.0738
5-Band SF Bay Tour - Low1024.80.5855
5-Band SF Bay Tour - Low/Med843.00.7118
5-Band SF Bay Tour - Medium731.50.8203
5-Band SF Bay Tour - Med/High675.90.8877
5-Band SF Bay Tour - High655.00.9160
Chicago-Mac Upwind0.8150
Chicago-Mac All Purpose0.8488
Chicago-Mac Downwind0.8794
Bayview-Mac Cove Island0.6294
Bayview-Mac Shore0.6336
Harvest Moon Regatta550.51.0899
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance685.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating685.50.8752
FinRating, kevyt tuuli1163.30.8597
FinRating, kova tuuli562.30.8892
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8752
Triple Number Coastal/Long Distance Low0.7533
Triple Number Coastal/Long Distance Medium0.9559
Triple Number Coastal/Long Distance High1.0486
Triple Number Windward/Leeward Low0.5894
Triple Number Windward/Leeward Medium0.7846
Triple Number Windward/Leeward High0.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
For information
General Purpose Handicap (GPH)706.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low796.5
Triple Number Coastal/Long Distance Medium627.7
Triple Number Coastal/Long Distance High572.2
Triple Number Windward/Leeward Low1018.0
Triple Number Windward/Leeward Medium764.7
Triple Number Windward/Leeward High681.0
Predominantly Upwind688.6
Predominantly Downwind631.7
Predominantly Reaching611.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7533
Triple Number Coastal/Long Distance Medium0.9559
Triple Number Coastal/Long Distance High1.0486
Triple Number Windward/Leeward Low0.5894
Triple Number Windward/Leeward Medium0.7846
Triple Number Windward/Leeward High0.8811
Coastal/Long Distance0.8752
Predominantly Upwind0.8713
Predominantly Downwind0.9499
For information
General Purpose Handicap (GPH)706.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9489
Distanseseilas Trippeltall svak vind0.7533
Distanseseilas Trippeltall mellomvind0.9559
Distanseseilas Trippeltall sterk vind1.0486
Pølsebane Trippeltall svak vind0.5894
Pølsebane Trippeltall mellomvind0.7846
Pølsebane Trippeltall sterk vind0.8811
Motvind Singeltall0.8713
Medvind Singeltall0.9499
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Coastal/Long Distance685.50.8752
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind688.60.8713
Predominantly Downwind631.70.9499
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore658.10.9117
Cape Doctor Coastal550.91.0891
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7533
Triple Number Coastal/Long Distance Medium0.9559
Triple Number Coastal/Long Distance High1.0486
Triple Number Windward/Leeward Low0.5894
Triple Number Windward/Leeward Medium0.7846
Triple Number Windward/Leeward High0.8811
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7533
Triple Number Coastal/Long Distance Medium0.9559
Triple Number Coastal/Long Distance High1.0486
Triple Number Windward/Leeward Low0.5894
Triple Number Windward/Leeward Medium0.7846
Triple Number Windward/Leeward High0.8811
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Predominantly Upwind688.60.8713
Predominantly Downwind631.70.9499
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance685.50.8752
Triple Number Coastal/Long Distance Low796.50.7533
Triple Number Coastal/Long Distance Medium627.70.9559
Triple Number Coastal/Long Distance High572.21.0486
Triple Number Windward/Leeward Low1018.00.5894
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1663.41120.7858.0725.4651.8611.9580.6531.1519.2
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low796.50.7533
Triple Number AP Medium627.80.9558
Triple Number AP High572.21.0486
Triple Number Windward/Leeward Low1062.60.5646
Triple Number Windward/Leeward Medium764.70.7846
Triple Number Windward/Leeward High681.00.8811
Single Number Predominant Upwind716.00.8380
Single Number Predominant Reaching628.50.9546
Single Number Predominant Downwind659.40.9099
Predominant Upwind - Low962.40.6235
Predominant Upwind - Low/Med746.90.8034
Predominant Upwind - Medium668.80.8971
Predominant Upwind - Med/High633.30.9474
Predominant Upwind - High622.20.9643
Predominant Downwind Low952.40.6300
Predominant Downwind Low/Med709.80.8453
Predominant Downwind Medium610.60.9826
Predominant Downwind Med/High551.31.0883
Predominant Downwind High517.01.1604
Predominant Reaching Low856.10.7008
Predominant Reaching Low/Med661.50.9070
Predominant Reaching Medium589.21.0183
Predominant Reaching Med/High548.01.0950
Predominant Reaching High524.21.1446
SA/DSPL Upwind20.22SA/DSPL Downwind34.49
Scoring OptionTODTOT
5-Band Windward/Leeward Low1184.20.5067
5-Band Windward/Leeward Low/Med877.80.6835
5-Band Windward/Leeward Medium752.70.7971
5-Band Windward/Leeward Med/High688.30.8717
5-Band Windward/Leeward High665.10.9021
Windward/Leeward 60-40 Low1192.00.5034
Windward/Leeward 60-40 Low/Med892.10.6726
Windward/Leeward 60-40 Medium772.90.7763
Windward/Leeward 60-40 Med/High715.00.8392
Windward/Leeward 60-40 High697.40.8604
5-Band AP Low876.30.6847
5-Band AP Low/Med701.70.8550
5-Band AP Medium620.20.9674
5-Band AP Med/High577.81.0384
5-Band AP High558.81.0738
5-Band SF Bay Tour - Low1024.80.5855
5-Band SF Bay Tour - Low/Med843.00.7118
5-Band SF Bay Tour - Medium731.50.8203
5-Band SF Bay Tour - Med/High675.90.8877
5-Band SF Bay Tour - High655.00.9160
Chicago-Mac Upwind0.8150
Chicago-Mac All Purpose0.8488
Chicago-Mac Downwind0.8794
Bayview-Mac Cove Island0.6294
Bayview-Mac Shore0.6336
Harvest Moon Regatta550.51.0899
Double HandedClub Certificate2025
SkvalpeNOR 9049
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMAMBA 311MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.325Max. Beam3.082Draft1.613Displacement3,502Wetted area17.61IMS L7.715LSM07.619Acc. length9.325Sink (kg/mm) 12.73
VCGD-0.050VCGM-0.049RM Rated (kg·m) 60.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0032
EDL1.600ST10.048ST20.170
ST30.170ST40.098ST50.300
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P11.560IG11.200ISP12.300MDT10.100MDL10.190MDT20.000MDL20.000TLNo TaperMW0.000GO0.000
E3.500J3.500BAS1.360FSD0.020SFJ0.280SPL3.690WPLTPS0.000BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.050Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
SkvalpeNOR 9049
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment388-2024060712330.130.691.232.122.8423.1507/06/2024
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment388-2024060712310.070.551.072.173.324.4810.72NoNo 23.6907/06/2024
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment312-20250514074311.0811.0811.086.186.0056.7320/03/2025
CRUISER/RACER REQUIREMENTS*
Accommodation length9.3 mTable area0.44 m²Headroom1.65 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity66 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity36 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.