Club
Certificate
Non Spinnaker
2023

Boat

Uro

NOR 5887

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.9°41.7°40.2°39.4°39.0°38.8°39.0°
Beat VMG2.953.624.094.414.564.634.65
52°4.515.395.976.306.476.566.61
60°4.755.616.166.466.646.746.82
75°4.875.776.316.616.816.967.13
90°4.765.686.296.636.877.057.35
110°4.245.266.036.536.847.097.52
120°4.015.035.846.396.747.017.49
135°3.544.555.376.046.506.807.29
150°2.943.874.675.355.936.376.94
Run VMG2.613.474.274.995.626.156.82
Gybe Angles174.8°176.6°178.4°178.4°179.3°179.3°179.9°

APH: 663.1

CDL: 7.495

GPH: 753.4

CertNo: 4879

BOAT
ClassMAMBA 341DesignerMAGNUSSON ROLFBuilderMamba Boats ABAge date01/1983Series date01/1980Offset fileS-scan33.offData file4879
HULL
Length Overall10.160 mMaximum Beam3.264 mDraft1.740 mDisplacement4,825 kgDLR8.6937IMS DivisionCruiser/RacerDynamic Allowance0.440%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight520 kgMinimum 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  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.
ORC Ref  03440002R8MIssued on 10/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Uro

NOR 5887

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1219.7995.0879.9817.2789.3777.5773.7
52°797.5668.1603.4571.5556.0549.0544.3
60°758.3641.4584.7557.1542.4534.1528.1
75°738.8624.1570.5544.4528.5517.3504.8
90°756.4634.2572.6542.8524.4510.4490.0
110°848.1684.9596.7551.6526.6508.0478.4
120°897.1715.5617.0563.2534.0513.5480.4
135°1017.8791.2669.8595.6554.0529.3493.9
150°1224.3930.4770.2672.3606.6565.4518.9
Run VMG1378.51037.0842.6722.2640.8585.5528.1
Selected Courses
Windward / Leeward1299.11016.0861.2769.7715.1681.5650.9
All purpose996.5797.5692.2632.9598.7577.7554.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward813.40.7376
All purpose663.10.9048
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6717
Downwind "popa"0.7324
70% up, 30% down "Ilhabela"0.6889
30% up, 70% down "Ilhabela-inverso"0.7131
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Predominantly Upwind701.30.8555
Predominantly Downwind690.70.8687
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low897.00.6689
Triple Number All Purpose Medium657.80.9121
Triple Number All Purpose High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Predominantly Upwind701.30.8555
Predominantly Downwind690.70.8687
Predominantly Upwind Low959.90.6251
Predominantly Upwind Medium711.00.8438
Predominantly Upwind High653.70.9179
Predominantly Downwind Low1020.30.5881
Predominantly Downwind Medium691.80.8674
Predominantly Downwind High555.11.0809
Chicago-Mac Upwind0.8381
Chicago-Mac All Purpose0.8423
Chicago-Mac Downwind0.8495
Bayview-Mac Cove Island0.7761
Bayview-Mac Shore0.7932
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching629.00.9539
Predominantly Reaching Low813.50.7375
Predominantly Reaching Medium627.30.9564
Predominantly Reaching High540.31.1105
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1277.30.4697
5-Band Low / Medium1043.50.5750
5-Band Medium789.00.7605
5-Band Medium / High689.40.8703
5-Band High656.20.9144
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance724.3
Triple Number Coastal/Long Distance Low897.0
Triple Number Coastal/Long Distance Medium657.8
Triple Number Coastal/Long Distance High574.3
Triple Number Windward/Leeward Low1157.6
Triple Number Windward/Leeward Medium807.1
Triple Number Windward/Leeward High678.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6689
Triple Number Coastal/Long Distance Medium0.9121
Triple Number Coastal/Long Distance High1.0448
Triple Number Windward/Leeward Low0.5183
Triple Number Windward/Leeward Medium0.7434
Triple Number Windward/Leeward High0.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low897.0
Triple Number Coastal/Long Distance Medium657.8
Triple Number Coastal/Long Distance High574.3
Triple Number Windward/Leeward Low1157.6
Triple Number Windward/Leeward Medium807.1
Triple Number Windward/Leeward High678.4
Predominantly Upwind701.3
Predominantly Downwind690.7
Predominantly Reaching652.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6689
Triple Number Coastal/Long Distance Medium0.9121
Triple Number Coastal/Long Distance High1.0448
Triple Number Windward/Leeward Low0.5183
Triple Number Windward/Leeward Medium0.7434
Triple Number Windward/Leeward High0.8844
Coastal/Long Distance0.8284
Predominantly Upwind0.8555
Predominantly Downwind0.8687
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6689
Tretall Distanseseilas Mellomvind0.9121
Tretall Distanseseilas Mye vind1.0448
Tretall Pølsebane Lite vind0.5183
Tretall Pølsebane Mellomvind0.7434
Tretall Pølsebane Mye vind0.8844
Distanseseilas ett tall (OSN 8-16kn)0.8284
Distanseseilas ett tall (APH 6-20kn)0.9048
Enkeltall Motvind0.8555
Enkeltall Medvind0.8687
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Coastal/Long Distance724.30.8284
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind701.30.8555
Predominantly Downwind690.70.8687
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore660.10.9090
Cape Doctor Coastal561.61.0684
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6689
Triple Number Coastal/Long Distance Medium0.9121
Triple Number Coastal/Long Distance High1.0448
Triple Number Windward/Leeward Low0.5183
Triple Number Windward/Leeward Medium0.7434
Triple Number Windward/Leeward High0.8844
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6689
Triple Number Coastal/Long Distance Medium0.9121
Triple Number Coastal/Long Distance High1.0448
Triple Number Windward/Leeward Low0.5183
Triple Number Windward/Leeward Medium0.7434
Triple Number Windward/Leeward High0.8844
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Predominantly Upwind701.30.8555
Predominantly Downwind690.70.8687
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance724.30.8284
Triple Number Coastal/Long Distance Low897.00.6689
Triple Number Coastal/Long Distance Medium657.80.9121
Triple Number Coastal/Long Distance High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1307.1958.9779.8676.7622.3584.9532.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low897.00.6689
Triple Number All Purpose Medium657.80.9121
Triple Number All Purpose High574.31.0448
Triple Number Windward/Leeward Low1157.60.5183
Triple Number Windward/Leeward Medium807.10.7434
Triple Number Windward/Leeward High678.40.8844
Predominantly Upwind701.30.8555
Predominantly Downwind690.70.8687
Predominantly Upwind Low959.90.6251
Predominantly Upwind Medium711.00.8438
Predominantly Upwind High653.70.9179
Predominantly Downwind Low1020.30.5881
Predominantly Downwind Medium691.80.8674
Predominantly Downwind High555.11.0809
Chicago-Mac Upwind0.8381
Chicago-Mac All Purpose0.8423
Chicago-Mac Downwind0.8495
Bayview-Mac Cove Island0.7761
Bayview-Mac Shore0.7932
Harvest Moon Regatta574.71.0440
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy671.00.8942
San Francisco Bay Medium806.00.7444
Predominantly Reaching629.00.9539
Predominantly Reaching Low813.50.7375
Predominantly Reaching Medium627.30.9564
Predominantly Reaching High540.31.1105
Windward/Leeward 60-40 Low1147.50.5229
Windward/Leeward 60-40 Medium820.40.7314
Windward/Leeward 60-40 High712.60.8419
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1277.30.4697
5-Band Low / Medium1043.50.5750
5-Band Medium789.00.7605
5-Band Medium / High689.40.8703
5-Band High656.20.9144
ORC Ref  03440002R8MIssued on 10/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Uro

NOR 5887

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMAMBA 341MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.160Max. Beam3.264Draft1.740Displacement4,825Wetted area22.47IMS L8.313LSM08.217Acc. length10.160Sink (kg/mm) 15.50
VCGD-0.074VCGM0.001RM Rated (kg·m) 85.5Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0076
EDL0.400ST10.048ST20.170
ST30.170ST40.170ST51.800
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders0Rotating mastNo
P11.850IG13.500ISP13.500MDT10.120MDL10.180MDT20.000MDL20.000TL0.000MW0.000GO0.000
E3.300J4.200BAS1.572FSDFoilSFJ0.000SPL0.000WPLTPS4.200BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.074Flotation Date01/01/2015MeasurerComment
SFFP1.045FFMFF1.238LCFcl5.867SG0.0000
SAFP9.593FAMFA0.930LCFsh6.087HBI1.086
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002R8MIssued on 10/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Uro

NOR 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
ORC Ref  03440002R8MIssued on 10/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org