Non Spin/HSFClub Certificate2025
UroNOR 5887
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 Angles43.9°43.9°41.7°40.3°39.3°38.9°38.6°38.6°39.4°
Beat VMG2.122.953.624.094.424.594.674.714.65
52°3.324.515.395.976.316.496.586.646.62
60°3.524.755.616.166.476.656.756.836.84
75°3.614.875.776.316.626.826.977.147.20
90°3.514.765.676.296.636.867.057.357.54
110°3.034.245.256.036.526.837.087.527.92
120°2.834.015.035.836.396.747.017.497.95
135°2.423.534.545.376.046.496.807.287.73
150°1.972.933.864.665.345.926.366.947.40
Run VMG1.742.613.474.274.985.626.156.827.30
Gybe Angles175.7°175.7°176.6°178.4°179.3°179.3°179.8°179.8°180.0°
APH ToD:662.7CDL: 7.518APH ToT: 0.9053CertNo:4879
BOAT
ClassMAMBA 341DesignerMAGNUSSONROLFBuilderMamba Boats ABAge date01/1983Series date01/1980Offset fileS-scan33.offData file4879
HULL
Length Overall10.160 mMaximum Beam3.264 mDraft1.740 mDisplacement4,820 kgDLR8.6910IMS DivisionCruiser/RacerDynamic Allowance0.450%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight520 kg(default)Minimum weight390 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail24.5024.91Headsail Luffed24.9024.90Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail6.85Storm Jib9.12Heavy Weather Jib24.61
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ No 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
UroNOR 5887
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 VMG1699.61220.6995.1879.3815.2785.0771.7763.5773.9
52°1083.6798.0668.2603.1570.7554.9547.2541.8543.8
60°1021.8758.7641.4584.3556.3541.5533.0526.7526.4
75°997.1738.8623.9570.1543.7527.7516.7504.1500.1
90°1026.1756.9634.5572.7542.8524.4510.4489.9477.2
110°1188.6848.7685.6597.2551.9526.8508.2478.7454.5
120°1273.2898.0716.4617.7563.7534.3513.8480.9452.7
135°1486.01019.5792.5670.9596.4554.5529.7494.5465.5
150°1828.51228.3933.6772.5674.4608.1566.4519.0486.6
Run VMG2067.41378.31037.0842.5722.2640.9585.6528.1493.5
Selected Courses
Windward / Leeward1879.71299.51016.0860.9768.7712.9678.6645.8633.7
All purpose1412.0997.4798.1692.4632.6597.7576.3552.3539.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward812.10.7388
All purpose662.70.9053
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6741
Downwind "popa"0.7324
70% up, 30% down "Ilhabela"0.6906
30% up, 70% down "Ilhabela-inverso"0.7139
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Predominantly Upwind700.50.8566
Predominantly Downwind690.80.8685
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low897.70.6683
Triple Number AP Medium657.70.9123
Triple Number AP High572.71.0477
Triple Number Windward/Leeward Low1214.80.4939
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Single Number Predominant Upwind731.50.8202
Single Number Predominant Reaching665.20.9020
Single Number Predominant Downwind730.40.8215
Predominant Upwind - Low1050.40.5712
Predominant Upwind - Low/Med781.80.7675
Predominant Upwind - Medium672.70.8920
Predominant Upwind - Med/High618.50.9701
Predominant Upwind - High600.80.9987
Predominant Downwind Low1149.70.5219
Predominant Downwind Low/Med808.50.7421
Predominant Downwind Medium659.00.9105
Predominant Downwind Med/High571.71.0495
Predominant Downwind High533.51.1246
Predominant Reaching Low974.40.6158
Predominant Reaching Low/Med717.30.8364
Predominant Reaching Medium610.80.9824
Predominant Reaching Med/High552.71.0855
Predominant Reaching High527.11.1383
SA/DSPL Upwind17.23SA/DSPL Downwind17.23
Scoring OptionTODTOT
5-Band Windward/Leeward Low1374.60.4365
5-Band Windward/Leeward Low/Med966.60.6207
5-Band Windward/Leeward Medium787.80.7616
5-Band Windward/Leeward Med/High686.50.8740
5-Band Windward/Leeward High649.40.9239
Windward/Leeward 60-40 Low1356.50.4423
Windward/Leeward 60-40 Low/Med965.40.6215
Windward/Leeward 60-40 Medium796.70.7531
Windward/Leeward 60-40 Med/High704.40.8518
Windward/Leeward 60-40 High672.90.8917
5-Band AP Low1017.30.5898
5-Band AP Low/Med765.80.7835
5-Band AP Medium645.80.9291
5-Band AP Med/High580.61.0334
5-Band AP High554.21.0825
5-Band SF Bay Tour - Low1171.00.5124
5-Band SF Bay Tour - Low/Med924.80.6488
5-Band SF Bay Tour - Medium763.10.7862
5-Band SF Bay Tour - Med/High674.50.8896
5-Band SF Bay Tour - High642.40.9340
Chicago-Mac Upwind0.7913
Chicago-Mac All Purpose0.7933
Chicago-Mac Downwind0.7861
Bayview-Mac Cove Island0.5566
Bayview-Mac Shore0.5632
Harvest Moon Regatta574.91.0436
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance723.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating723.90.8289
FinRating, kevyt tuuli1359.50.7356
FinRating, kova tuuli559.50.8936
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8289
Triple Number Coastal/Long Distance Low0.6683
Triple Number Coastal/Long Distance Medium0.9124
Triple Number Coastal/Long Distance High1.0477
Triple Number Windward/Leeward Low0.5182
Triple Number Windward/Leeward Medium0.7443
Triple Number Windward/Leeward High0.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
For information
General Purpose Handicap (GPH)753.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low897.8
Triple Number Coastal/Long Distance Medium657.6
Triple Number Coastal/Long Distance High572.7
Triple Number Windward/Leeward Low1157.9
Triple Number Windward/Leeward Medium806.1
Triple Number Windward/Leeward High674.9
Predominantly Upwind700.5
Predominantly Downwind690.8
Predominantly Reaching653.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6683
Triple Number Coastal/Long Distance Medium0.9124
Triple Number Coastal/Long Distance High1.0477
Triple Number Windward/Leeward Low0.5182
Triple Number Windward/Leeward Medium0.7443
Triple Number Windward/Leeward High0.8890
Coastal/Long Distance0.8289
Predominantly Upwind0.8566
Predominantly Downwind0.8685
For information
General Purpose Handicap (GPH)753.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9053
Distanseseilas Trippeltall svak vind0.6683
Distanseseilas Trippeltall mellomvind0.9124
Distanseseilas Trippeltall sterk vind1.0477
Pølsebane Trippeltall svak vind0.5182
Pølsebane Trippeltall mellomvind0.7443
Pølsebane Trippeltall sterk vind0.8890
Motvind Singeltall0.8566
Medvind Singeltall0.8685
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Coastal/Long Distance723.90.8289
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind700.50.8566
Predominantly Downwind690.80.8685
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore637.30.9414
Cape Doctor Coastal543.51.1040
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6683
Triple Number Coastal/Long Distance Medium0.9124
Triple Number Coastal/Long Distance High1.0477
Triple Number Windward/Leeward Low0.5182
Triple Number Windward/Leeward Medium0.7443
Triple Number Windward/Leeward High0.8890
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6683
Triple Number Coastal/Long Distance Medium0.9124
Triple Number Coastal/Long Distance High1.0477
Triple Number Windward/Leeward Low0.5182
Triple Number Windward/Leeward Medium0.7443
Triple Number Windward/Leeward High0.8890
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Predominantly Upwind700.50.8566
Predominantly Downwind690.80.8685
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance723.90.8289
Triple Number Coastal/Long Distance Low897.80.6683
Triple Number Coastal/Long Distance Medium657.60.9124
Triple Number Coastal/Long Distance High572.71.0477
Triple Number Windward/Leeward Low1157.90.5182
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2030.01307.4959.1779.8676.3621.4583.8530.9515.6
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low897.70.6683
Triple Number AP Medium657.70.9123
Triple Number AP High572.71.0477
Triple Number Windward/Leeward Low1214.80.4939
Triple Number Windward/Leeward Medium806.10.7443
Triple Number Windward/Leeward High674.90.8890
Single Number Predominant Upwind731.50.8202
Single Number Predominant Reaching665.20.9020
Single Number Predominant Downwind730.40.8215
Predominant Upwind - Low1050.40.5712
Predominant Upwind - Low/Med781.80.7675
Predominant Upwind - Medium672.70.8920
Predominant Upwind - Med/High618.50.9701
Predominant Upwind - High600.80.9987
Predominant Downwind Low1149.70.5219
Predominant Downwind Low/Med808.50.7421
Predominant Downwind Medium659.00.9105
Predominant Downwind Med/High571.71.0495
Predominant Downwind High533.51.1246
Predominant Reaching Low974.40.6158
Predominant Reaching Low/Med717.30.8364
Predominant Reaching Medium610.80.9824
Predominant Reaching Med/High552.71.0855
Predominant Reaching High527.11.1383
SA/DSPL Upwind17.23SA/DSPL Downwind17.23
Scoring OptionTODTOT
5-Band Windward/Leeward Low1374.60.4365
5-Band Windward/Leeward Low/Med966.60.6207
5-Band Windward/Leeward Medium787.80.7616
5-Band Windward/Leeward Med/High686.50.8740
5-Band Windward/Leeward High649.40.9239
Windward/Leeward 60-40 Low1356.50.4423
Windward/Leeward 60-40 Low/Med965.40.6215
Windward/Leeward 60-40 Medium796.70.7531
Windward/Leeward 60-40 Med/High704.40.8518
Windward/Leeward 60-40 High672.90.8917
5-Band AP Low1017.30.5898
5-Band AP Low/Med765.80.7835
5-Band AP Medium645.80.9291
5-Band AP Med/High580.61.0334
5-Band AP High554.21.0825
5-Band SF Bay Tour - Low1171.00.5124
5-Band SF Bay Tour - Low/Med924.80.6488
5-Band SF Bay Tour - Medium763.10.7862
5-Band SF Bay Tour - Med/High674.50.8896
5-Band SF Bay Tour - High642.40.9340
Chicago-Mac Upwind0.7913
Chicago-Mac All Purpose0.7933
Chicago-Mac Downwind0.7861
Bayview-Mac Cove Island0.5566
Bayview-Mac Shore0.5632
Harvest Moon Regatta574.91.0436
Non Spin/HSFClub Certificate2025
UroNOR 5887
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMAMBA 341MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.160Max. Beam3.264Draft1.740Displacement4,820Wetted area22.46IMS L8.324LSM08.215Acc. length10.029Sink (kg/mm) 15.49
VCGD-0.074VCGM0.001RM Rated (kg·m) 85.4Limit of positive stability(°) N/AStability IndexN/ADefault crew weight520Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0076
EDL0.400ST10.048ST20.170
ST30.170ST40.170ST51.800
RIG
Forestay tensionAftInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders0Rotating mastNo
P11.850IG13.500ISP13.500MDT10.120MDL10.180MDT20.000MDL20.000TL0.000MW0.000GO0.000
E3.300J4.200BAS1.572FSDFoilSFJ0.000SPL0.000WPLTPS4.200BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.074Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
UroNOR 5887
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment330-2019050915120.230.871.452.242.8024.5009/05/2019
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment626-2021012215400.040.460.891.852.904.0012.95NoNo 24.9022/01/2021
CRUISER/RACER REQUIREMENTS*
Accommodation length10.0 mTable area0.44 m²Headroom1.70 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity80 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity50 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.