Club 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 Angles43.6°43.6°41.9°40.1°38.6°38.2°37.8°38.2°39.4°
Beat VMG2.223.063.714.184.474.614.684.704.63
52°3.464.675.536.036.306.456.526.586.57
60°3.684.925.756.196.446.606.696.776.78
75°3.805.065.896.326.586.776.927.097.16
90°3.735.055.996.466.726.867.027.327.52
110°3.765.116.086.576.897.177.407.727.97
120°3.604.945.936.496.857.167.458.048.50
135°3.184.445.476.206.636.967.298.019.00
150°2.633.804.845.706.296.676.997.628.43
Run VMG2.283.294.204.975.636.146.527.127.70
Gybe Angles146.9°146.9°151.4°155.0°162.4°169.1°177.2°178.1°177.2°
APH ToD:623.8CDL: 7.351APH ToT: 0.9619CertNo: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 Allowance0.300%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight467 kg(default)Minimum weight337 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail23.1523.51Headsail 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.
Club 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 VMG1622.11178.4971.1862.1805.4781.2769.7765.2777.1
52°1040.3770.9651.5597.1571.5558.4552.2547.3547.9
60°978.9732.2626.2581.2558.7545.6537.9531.8530.7
75°948.1711.5611.0569.2547.1531.6520.3507.9503.0
90°965.3712.2601.2556.9535.9524.9513.2491.6478.9
110°958.7704.1592.2548.3522.4502.2486.4466.2451.8
120°1001.1729.2606.7554.3525.8503.1483.4447.6423.5
135°1130.8810.5658.6580.8543.3516.9493.6449.6400.2
150°1366.5948.4743.8631.8571.9539.6515.2472.5426.9
Run VMG1579.51095.2858.0724.4639.9586.6552.1506.0467.4
Selected Courses
Windward / Leeward1599.31136.8914.5793.2722.7683.9660.9635.6622.2
All purpose1214.1878.1721.6643.5601.3577.5561.3539.6524.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward758.40.7911
All purpose623.80.9619
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6848
Downwind "popa"0.8464
70% up, 30% down "Ilhabela"0.7264
30% up, 70% down "Ilhabela-inverso"0.7905
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Predominantly Upwind675.60.8881
Predominantly Downwind629.90.9525
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low799.80.7502
Triple Number AP Medium619.50.9685
Triple Number AP High557.21.0768
Triple Number Windward/Leeward Low1071.00.5602
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Single Number Predominant Upwind703.40.8530
Single Number Predominant Reaching623.10.9630
Single Number Predominant Downwind658.00.9119
Predominant Upwind - Low969.40.6190
Predominant Upwind - Low/Med741.30.8094
Predominant Upwind - Medium653.80.9176
Predominant Upwind - Med/High612.00.9804
Predominant Upwind - High596.11.0066
Predominant Downwind Low960.20.6249
Predominant Downwind Low/Med710.90.8440
Predominant Downwind Medium607.60.9875
Predominant Downwind Med/High546.31.0983
Predominant Downwind High510.61.1751
Predominant Reaching Low859.90.6977
Predominant Reaching Low/Med658.30.9114
Predominant Reaching Medium582.11.0308
Predominant Reaching Med/High539.71.1117
Predominant Reaching High513.71.1680
SA/DSPL Upwind20.22SA/DSPL Downwind34.49
Scoring OptionTODTOT
5-Band Windward/Leeward Low1197.20.5012
5-Band Windward/Leeward Low/Med876.20.6848
5-Band Windward/Leeward Medium738.80.8121
5-Band Windward/Leeward Med/High665.70.9013
5-Band Windward/Leeward High637.60.9410
Windward/Leeward 60-40 Low1205.30.4978
Windward/Leeward 60-40 Low/Med888.70.6751
Windward/Leeward 60-40 Medium755.40.7943
Windward/Leeward 60-40 Med/High687.30.8730
Windward/Leeward 60-40 High663.70.9040
5-Band AP Low882.50.6799
5-Band AP Low/Med699.30.8579
5-Band AP Medium611.00.9820
5-Band AP Med/High563.71.0643
5-Band AP High540.71.1096
5-Band SF Bay Tour - Low1034.30.5801
5-Band SF Bay Tour - Low/Med840.70.7137
5-Band SF Bay Tour - Medium717.10.8367
5-Band SF Bay Tour - Med/High652.90.9189
5-Band SF Bay Tour - High626.90.9571
Chicago-Mac Upwind0.8270
Chicago-Mac All Purpose0.8560
Chicago-Mac Downwind0.8803
Bayview-Mac Cove Island0.6276
Bayview-Mac Shore0.6318
Harvest Moon Regatta546.41.0980
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance676.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating676.90.8864
FinRating, kevyt tuuli1175.80.8505
FinRating, kova tuuli544.30.9186
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8864
Triple Number Coastal/Long Distance Low0.7502
Triple Number Coastal/Long Distance Medium0.9686
Triple Number Coastal/Long Distance High1.0768
Triple Number Windward/Leeward Low0.5850
Triple Number Windward/Leeward Medium0.7973
Triple Number Windward/Leeward High0.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
For information
General Purpose Handicap (GPH)699.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low799.8
Triple Number Coastal/Long Distance Medium619.5
Triple Number Coastal/Long Distance High557.2
Triple Number Windward/Leeward Low1025.6
Triple Number Windward/Leeward Medium752.5
Triple Number Windward/Leeward High657.2
Predominantly Upwind675.6
Predominantly Downwind629.9
Predominantly Reaching607.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7502
Triple Number Coastal/Long Distance Medium0.9686
Triple Number Coastal/Long Distance High1.0768
Triple Number Windward/Leeward Low0.5850
Triple Number Windward/Leeward Medium0.7973
Triple Number Windward/Leeward High0.9130
Coastal/Long Distance0.8864
Predominantly Upwind0.8881
Predominantly Downwind0.9525
For information
General Purpose Handicap (GPH)699.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9619
Distanseseilas Trippeltall svak vind0.7502
Distanseseilas Trippeltall mellomvind0.9686
Distanseseilas Trippeltall sterk vind1.0768
Pølsebane Trippeltall svak vind0.5850
Pølsebane Trippeltall mellomvind0.7973
Pølsebane Trippeltall sterk vind0.9130
Motvind Singeltall0.8881
Medvind Singeltall0.9525
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Coastal/Long Distance676.90.8864
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind675.60.8881
Predominantly Downwind629.90.9525
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore626.20.9581
Cape Doctor Coastal529.11.1340
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7502
Triple Number Coastal/Long Distance Medium0.9686
Triple Number Coastal/Long Distance High1.0768
Triple Number Windward/Leeward Low0.5850
Triple Number Windward/Leeward Medium0.7973
Triple Number Windward/Leeward High0.9130
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7502
Triple Number Coastal/Long Distance Medium0.9686
Triple Number Coastal/Long Distance High1.0768
Triple Number Windward/Leeward Low0.5850
Triple Number Windward/Leeward Medium0.7973
Triple Number Windward/Leeward High0.9130
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Predominantly Upwind675.60.8881
Predominantly Downwind629.90.9525
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.90.8864
Triple Number Coastal/Long Distance Low799.80.7502
Triple Number Coastal/Long Distance Medium619.50.9686
Triple Number Coastal/Long Distance High557.21.0768
Triple Number Windward/Leeward Low1025.60.5850
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1692.31132.6860.5719.4639.7598.7567.6517.5501.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low799.80.7502
Triple Number AP Medium619.50.9685
Triple Number AP High557.21.0768
Triple Number Windward/Leeward Low1071.00.5602
Triple Number Windward/Leeward Medium752.50.7973
Triple Number Windward/Leeward High657.20.9130
Single Number Predominant Upwind703.40.8530
Single Number Predominant Reaching623.10.9630
Single Number Predominant Downwind658.00.9119
Predominant Upwind - Low969.40.6190
Predominant Upwind - Low/Med741.30.8094
Predominant Upwind - Medium653.80.9176
Predominant Upwind - Med/High612.00.9804
Predominant Upwind - High596.11.0066
Predominant Downwind Low960.20.6249
Predominant Downwind Low/Med710.90.8440
Predominant Downwind Medium607.60.9875
Predominant Downwind Med/High546.31.0983
Predominant Downwind High510.61.1751
Predominant Reaching Low859.90.6977
Predominant Reaching Low/Med658.30.9114
Predominant Reaching Medium582.11.0308
Predominant Reaching Med/High539.71.1117
Predominant Reaching High513.71.1680
SA/DSPL Upwind20.22SA/DSPL Downwind34.49
Scoring OptionTODTOT
5-Band Windward/Leeward Low1197.20.5012
5-Band Windward/Leeward Low/Med876.20.6848
5-Band Windward/Leeward Medium738.80.8121
5-Band Windward/Leeward Med/High665.70.9013
5-Band Windward/Leeward High637.60.9410
Windward/Leeward 60-40 Low1205.30.4978
Windward/Leeward 60-40 Low/Med888.70.6751
Windward/Leeward 60-40 Medium755.40.7943
Windward/Leeward 60-40 Med/High687.30.8730
Windward/Leeward 60-40 High663.70.9040
5-Band AP Low882.50.6799
5-Band AP Low/Med699.30.8579
5-Band AP Medium611.00.9820
5-Band AP Med/High563.71.0643
5-Band AP High540.71.1096
5-Band SF Bay Tour - Low1034.30.5801
5-Band SF Bay Tour - Low/Med840.70.7137
5-Band SF Bay Tour - Medium717.10.8367
5-Band SF Bay Tour - Med/High652.90.9189
5-Band SF Bay Tour - High626.90.9571
Chicago-Mac Upwind0.8270
Chicago-Mac All Purpose0.8560
Chicago-Mac Downwind0.8803
Bayview-Mac Cove Island0.6276
Bayview-Mac Shore0.6318
Harvest Moon Regatta546.41.0980
Club 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 L7.827LSM07.619Acc. length9.325Sink (kg/mm) 12.73
VCGD-0.050VCGM-0.049RM Rated (kg·m) 60.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight467Declared 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
Club 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.