Non Spin/HSFClub 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°39.5°
Beat VMG2.223.063.714.184.474.614.684.704.63
52°3.464.675.536.036.306.456.526.586.57
60°3.684.925.756.206.446.606.696.776.78
75°3.805.065.896.336.586.776.927.097.16
90°3.704.965.826.326.606.827.027.327.52
110°3.234.475.456.146.536.827.087.568.04
120°3.024.225.225.976.426.726.997.518.08
135°2.593.724.725.526.126.496.777.297.85
150°2.153.184.154.975.676.186.527.047.54
Run VMG1.862.753.604.375.065.686.166.767.25
Gybe Angles148.9°148.9°153.7°162.2°169.9°174.4°176.6°178.0°177.7°
APH ToD:651.6CDL: 7.351APH ToT: 0.9208CertNo: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 weight467 kg(default)Minimum weight337 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail23.1523.52Headsail Luffed23.6923.69Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail7.09Storm Jib6.28Heavy Weather Jib16.94
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ Spinnaker pole aboard
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.
Non Spin/HSFClub 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 VMG1621.41177.9970.7861.9805.4781.3769.8765.4777.6
52°1039.9770.6651.3597.0571.5558.5552.2547.4548.1
60°978.5731.9626.0581.1558.7545.6537.9531.9530.8
75°947.7711.3610.8569.2547.0531.6520.3508.0503.0
90°974.1726.5618.5570.0545.3527.7513.1491.5478.9
110°1115.9805.8660.3586.7551.1527.9508.5476.1448.0
120°1191.9852.2689.7603.4560.9535.5514.8479.1445.5
135°1392.4969.0763.1651.7588.3554.3531.4493.7458.8
150°1676.41133.4867.9724.4635.5582.4551.9511.3477.3
Run VMG1936.91308.7998.7823.4711.0633.8584.4532.5496.5
Selected Courses
Windward / Leeward1775.51243.3984.7842.6758.2707.6677.1648.9637.0
All purpose1330.6950.9770.7676.9624.8594.7575.8553.1539.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward798.30.7516
All purpose651.60.9208
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6849
Downwind "popa"0.7510
70% up, 30% down "Ilhabela"0.7035
30% up, 70% down "Ilhabela-inverso"0.7299
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Predominantly Upwind691.60.8675
Predominantly Downwind679.00.8837
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low860.80.6970
Triple Number AP Medium646.90.9275
Triple Number AP High572.01.0489
Triple Number Windward/Leeward Low1166.30.5144
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Single Number Predominant Upwind720.30.8329
Single Number Predominant Reaching654.40.9169
Single Number Predominant Downwind714.80.8394
Predominant Upwind - Low1008.40.5950
Predominant Upwind - Low/Med763.50.7859
Predominant Upwind - Medium666.80.8998
Predominant Upwind - Med/High619.50.9685
Predominant Upwind - High603.40.9943
Predominant Downwind Low1094.30.5483
Predominant Downwind Low/Med784.70.7646
Predominant Downwind Medium650.50.9223
Predominant Downwind Med/High571.81.0493
Predominant Downwind High535.01.1214
Predominant Reaching Low931.30.6442
Predominant Reaching Low/Med699.50.8577
Predominant Reaching Medium606.10.9900
Predominant Reaching Med/High554.21.0826
Predominant Reaching High528.71.1348
SA/DSPL Upwind20.22SA/DSPL Downwind20.22
Scoring OptionTODTOT
5-Band Windward/Leeward Low1312.60.4571
5-Band Windward/Leeward Low/Med939.30.6388
5-Band Windward/Leeward Medium775.90.7733
5-Band Windward/Leeward Med/High684.30.8768
5-Band Windward/Leeward High651.70.9206
Windward/Leeward 60-40 Low1297.50.4624
Windward/Leeward 60-40 Low/Med939.10.6389
Windward/Leeward 60-40 Medium785.00.7643
Windward/Leeward 60-40 Med/High702.30.8544
Windward/Leeward 60-40 High675.10.8888
5-Band AP Low967.70.6200
5-Band AP Low/Med742.60.8079
5-Band AP Medium636.50.9427
5-Band AP Med/High579.31.0358
5-Band AP High554.61.0818
5-Band SF Bay Tour - Low1120.80.5353
5-Band SF Bay Tour - Low/Med896.30.6694
5-Band SF Bay Tour - Medium749.80.8003
5-Band SF Bay Tour - Med/High671.30.8937
5-Band SF Bay Tour - High643.10.9329
Chicago-Mac Upwind0.8061
Chicago-Mac All Purpose0.8103
Chicago-Mac Downwind0.8057
Bayview-Mac Cove Island0.5796
Bayview-Mac Shore0.5862
Harvest Moon Regatta569.51.0536
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance710.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating710.70.8443
FinRating, kevyt tuuli1293.70.7730
FinRating, kova tuuli559.20.8941
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8443
Triple Number Coastal/Long Distance Low0.6970
Triple Number Coastal/Long Distance Medium0.9276
Triple Number Coastal/Long Distance High1.0489
Triple Number Windward/Leeward Low0.5386
Triple Number Windward/Leeward Medium0.7570
Triple Number Windward/Leeward High0.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
For information
General Purpose Handicap (GPH)736.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low860.8
Triple Number Coastal/Long Distance Medium646.8
Triple Number Coastal/Long Distance High572.0
Triple Number Windward/Leeward Low1114.0
Triple Number Windward/Leeward Medium792.6
Triple Number Windward/Leeward High674.2
Predominantly Upwind691.6
Predominantly Downwind679.0
Predominantly Reaching643.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6970
Triple Number Coastal/Long Distance Medium0.9276
Triple Number Coastal/Long Distance High1.0489
Triple Number Windward/Leeward Low0.5386
Triple Number Windward/Leeward Medium0.7570
Triple Number Windward/Leeward High0.8900
Coastal/Long Distance0.8443
Predominantly Upwind0.8675
Predominantly Downwind0.8837
For information
General Purpose Handicap (GPH)736.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9208
Distanseseilas Trippeltall svak vind0.6970
Distanseseilas Trippeltall mellomvind0.9276
Distanseseilas Trippeltall sterk vind1.0489
Pølsebane Trippeltall svak vind0.5386
Pølsebane Trippeltall mellomvind0.7570
Pølsebane Trippeltall sterk vind0.8900
Motvind Singeltall0.8675
Medvind Singeltall0.8837
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Coastal/Long Distance710.70.8443
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind691.60.8675
Predominantly Downwind679.00.8837
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore640.60.9366
Cape Doctor Coastal543.41.1042
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6970
Triple Number Coastal/Long Distance Medium0.9276
Triple Number Coastal/Long Distance High1.0489
Triple Number Windward/Leeward Low0.5386
Triple Number Windward/Leeward Medium0.7570
Triple Number Windward/Leeward High0.8900
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6970
Triple Number Coastal/Long Distance Medium0.9276
Triple Number Coastal/Long Distance High1.0489
Triple Number Windward/Leeward Low0.5386
Triple Number Windward/Leeward Medium0.7570
Triple Number Windward/Leeward High0.8900
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Predominantly Upwind691.60.8675
Predominantly Downwind679.00.8837
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance710.70.8443
Triple Number Coastal/Long Distance Low860.80.6970
Triple Number Coastal/Long Distance Medium646.80.9276
Triple Number Coastal/Long Distance High572.01.0489
Triple Number Windward/Leeward Low1114.00.5386
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1915.51249.9927.9761.7666.0617.1582.7532.0515.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low860.80.6970
Triple Number AP Medium646.90.9275
Triple Number AP High572.01.0489
Triple Number Windward/Leeward Low1166.30.5144
Triple Number Windward/Leeward Medium792.60.7570
Triple Number Windward/Leeward High674.20.8900
Single Number Predominant Upwind720.30.8329
Single Number Predominant Reaching654.40.9169
Single Number Predominant Downwind714.80.8394
Predominant Upwind - Low1008.40.5950
Predominant Upwind - Low/Med763.50.7859
Predominant Upwind - Medium666.80.8998
Predominant Upwind - Med/High619.50.9685
Predominant Upwind - High603.40.9943
Predominant Downwind Low1094.30.5483
Predominant Downwind Low/Med784.70.7646
Predominant Downwind Medium650.50.9223
Predominant Downwind Med/High571.81.0493
Predominant Downwind High535.01.1214
Predominant Reaching Low931.30.6442
Predominant Reaching Low/Med699.50.8577
Predominant Reaching Medium606.10.9900
Predominant Reaching Med/High554.21.0826
Predominant Reaching High528.71.1348
SA/DSPL Upwind20.22SA/DSPL Downwind20.22
Scoring OptionTODTOT
5-Band Windward/Leeward Low1312.60.4571
5-Band Windward/Leeward Low/Med939.30.6388
5-Band Windward/Leeward Medium775.90.7733
5-Band Windward/Leeward Med/High684.30.8768
5-Band Windward/Leeward High651.70.9206
Windward/Leeward 60-40 Low1297.50.4624
Windward/Leeward 60-40 Low/Med939.10.6389
Windward/Leeward 60-40 Medium785.00.7643
Windward/Leeward 60-40 Med/High702.30.8544
Windward/Leeward 60-40 High675.10.8888
5-Band AP Low967.70.6200
5-Band AP Low/Med742.60.8079
5-Band AP Medium636.50.9427
5-Band AP Med/High579.31.0358
5-Band AP High554.61.0818
5-Band SF Bay Tour - Low1120.80.5353
5-Band SF Bay Tour - Low/Med896.30.6694
5-Band SF Bay Tour - Medium749.80.8003
5-Band SF Bay Tour - Med/High671.30.8937
5-Band SF Bay Tour - High643.10.9329
Chicago-Mac Upwind0.8061
Chicago-Mac All Purpose0.8103
Chicago-Mac Downwind0.8057
Bayview-Mac Cove Island0.5796
Bayview-Mac Shore0.5862
Harvest Moon Regatta569.51.0536
Non Spin/HSFClub 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 L7.825LSM07.619Acc. 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
Non Spin/HSFClub 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
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.