Club
Certificate
Non Spinnaker
2023

Boat

Tora

NOR 5801

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 Angles43.2°41.2°39.9°38.8°38.4°38.2°38.1°
Beat VMG3.203.874.334.584.704.774.81
52°4.885.736.236.486.606.666.73
60°5.135.966.396.636.766.846.92
75°5.286.106.526.776.957.097.23
90°5.176.046.526.817.037.227.50
110°4.665.656.346.737.037.297.76
120°4.415.416.166.626.937.217.74
135°3.884.895.716.316.696.987.53
150°3.314.305.145.846.376.727.26
Run VMG2.863.744.525.225.866.356.96
Gybe Angles148.7°153.8°162.8°170.0°174.8°179.0°179.3°

APH: 631.9

CDL: 7.781

GPH: 712.2

CertNo: 4826

BOAT
ClassMAMBA 33DesignerBengt KarlssonBuilderBK Marin ABAge date01/1987Series date01/1984Offset fileScale_mamba33.offData file4826
HULL
Length Overall9.850 mMaximum Beam3.266 mDraft1.751 mDisplacement4,643 kgDLR7.9208IMS DivisionCruiser/RacerDynamic Allowance0.350%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight534 kgMinimum weight400 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail29.5430.13Headsail Luffed29.3129.31Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail8.47Storm Jib7.23Heavy Weather Jib19.50
SAIL LIMITS
Headsails5  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.
ORC Ref  03440002K13Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Tora

NOR 5801

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 VMG1123.3931.2831.8785.5766.5755.3747.8
52°737.5628.0577.9555.9545.8540.3535.2
60°701.3604.5563.2543.3532.4526.5520.4
75°682.0590.6552.1531.7517.7507.9497.7
90°696.0596.1552.0528.8512.1498.6480.0
110°773.1637.4568.1534.6512.3493.6464.0
120°816.5665.5584.1543.9519.3499.0465.1
135°928.0735.6630.7570.4537.9515.6478.0
150°1088.6836.7701.0616.0565.1535.8495.7
Run VMG1257.0963.0796.5689.0614.8567.3517.3
Selected Courses
Windward / Leeward1190.2947.1814.2737.3690.7661.3632.5
All purpose910.5742.3654.8607.2579.5561.4539.2
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward774.10.7751
All purpose631.90.9496
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7069
Downwind "popa"0.7771
70% up, 30% down "Ilhabela"0.7266
30% up, 70% down "Ilhabela-inverso"0.7546
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Predominantly Upwind670.80.8945
Predominantly Downwind657.30.9128
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low826.40.7260
Triple Number All Purpose Medium627.40.9563
Triple Number All Purpose High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Predominantly Upwind670.80.8945
Predominantly Downwind657.30.9128
Predominantly Upwind Low889.70.6744
Predominantly Upwind Medium682.30.8794
Predominantly Upwind High636.70.9423
Predominantly Downwind Low940.50.6379
Predominantly Downwind Medium658.80.9107
Predominantly Downwind High539.41.1124
Chicago-Mac Upwind0.8785
Chicago-Mac All Purpose0.8849
Chicago-Mac Downwind0.8944
Bayview-Mac Cove Island0.8240
Bayview-Mac Shore0.8391
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching602.20.9963
Predominantly Reaching Low753.40.7964
Predominantly Reaching Medium599.91.0002
Predominantly Reaching High527.11.1382
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1171.50.5122
5-Band Low / Medium970.80.6181
5-Band Medium753.40.7964
5-Band Medium / High667.80.8985
5-Band High637.50.9412
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance688.9
Triple Number Coastal/Long Distance Low826.4
Triple Number Coastal/Long Distance Medium627.4
Triple Number Coastal/Long Distance High557.6
Triple Number Windward/Leeward Low1068.6
Triple Number Windward/Leeward Medium768.7
Triple Number Windward/Leeward High657.8
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7260
Triple Number Coastal/Long Distance Medium0.9563
Triple Number Coastal/Long Distance High1.0760
Triple Number Windward/Leeward Low0.5615
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low826.4
Triple Number Coastal/Long Distance Medium627.4
Triple Number Coastal/Long Distance High557.6
Triple Number Windward/Leeward Low1068.6
Triple Number Windward/Leeward Medium768.7
Triple Number Windward/Leeward High657.8
Predominantly Upwind670.8
Predominantly Downwind657.3
Predominantly Reaching623.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7260
Triple Number Coastal/Long Distance Medium0.9563
Triple Number Coastal/Long Distance High1.0760
Triple Number Windward/Leeward Low0.5615
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.9121
Coastal/Long Distance0.8710
Predominantly Upwind0.8945
Predominantly Downwind0.9128
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7260
Tretall Distanseseilas Mellomvind0.9563
Tretall Distanseseilas Mye vind1.0760
Tretall Pølsebane Lite vind0.5615
Tretall Pølsebane Mellomvind0.7805
Tretall Pølsebane Mye vind0.9121
Distanseseilas ett tall (OSN 8-16kn)0.8710
Distanseseilas ett tall (APH 6-20kn)0.9496
Enkeltall Motvind0.8945
Enkeltall Medvind0.9128
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Coastal/Long Distance688.90.8710
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind670.80.8945
Predominantly Downwind657.30.9128
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore641.20.9358
Cape Doctor Coastal545.91.0992
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7260
Triple Number Coastal/Long Distance Medium0.9563
Triple Number Coastal/Long Distance High1.0760
Triple Number Windward/Leeward Low0.5615
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.9121
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7260
Triple Number Coastal/Long Distance Medium0.9563
Triple Number Coastal/Long Distance High1.0760
Triple Number Windward/Leeward Low0.5615
Triple Number Windward/Leeward Medium0.7805
Triple Number Windward/Leeward High0.9121
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Predominantly Upwind670.80.8945
Predominantly Downwind657.30.9128
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance688.90.8710
Triple Number Coastal/Long Distance Low826.40.7260
Triple Number Coastal/Long Distance Medium627.40.9563
Triple Number Coastal/Long Distance High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1196.9892.8736.4647.4601.3568.0518.5
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low826.40.7260
Triple Number All Purpose Medium627.40.9563
Triple Number All Purpose High557.61.0760
Triple Number Windward/Leeward Low1068.60.5615
Triple Number Windward/Leeward Medium768.70.7805
Triple Number Windward/Leeward High657.80.9121
Predominantly Upwind670.80.8945
Predominantly Downwind657.30.9128
Predominantly Upwind Low889.70.6744
Predominantly Upwind Medium682.30.8794
Predominantly Upwind High636.70.9423
Predominantly Downwind Low940.50.6379
Predominantly Downwind Medium658.80.9107
Predominantly Downwind High539.41.1124
Chicago-Mac Upwind0.8785
Chicago-Mac All Purpose0.8849
Chicago-Mac Downwind0.8944
Bayview-Mac Cove Island0.8240
Bayview-Mac Shore0.8391
Harvest Moon Regatta552.31.0863
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy649.40.9240
San Francisco Bay Medium763.80.7856
Predominantly Reaching602.20.9963
Predominantly Reaching Low753.40.7964
Predominantly Reaching Medium599.91.0002
Predominantly Reaching High527.11.1382
Windward/Leeward 60-40 Low1060.40.5658
Windward/Leeward 60-40 Medium782.30.7670
Windward/Leeward 60-40 High691.00.8683
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1171.50.5122
5-Band Low / Medium970.80.6181
5-Band Medium753.40.7964
5-Band Medium / High667.80.8985
5-Band High637.50.9412
ORC Ref  03440002K13Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Tora

NOR 5801

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMAMBA 33MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.850Max. Beam3.266Draft1.751Displacement4,643Wetted area20.87IMS L8.333LSM08.368Acc. length9.850Sink (kg/mm) 15.21
VCGD0.075VCGM0.042RM Rated (kg·m) 78.0Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0032
EDL0.600ST10.048ST20.170
ST30.170ST40.170ST50.250
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P12.250IG11.936ISP11.915MDT10.115MDL10.180MDT20.115MDL20.155TL0.000MW0.180GO0.205
E3.947J3.705BAS1.450FSD0.000SFJ0.000SPL3.663WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.075Flotation Date01/01/2015MeasurerComment
SFFP0.582FFMFF1.050LCFcl5.884SG1.0000
SAFP9.268FAMFA0.920LCFsh6.101HBI0.953
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002K13Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

Tora

NOR 5801

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment400-2007042014400.150.001.562.633.3429.5420/04/2007
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment624-2021042221540.060.621.202.503.875.3511.37NoNo 29.3122/04/2021Gamle forseil, som ble trimmet i Italia og har derfor fått nye mål400-2007042014420.000.000.000.000.003.9811.45NoNo 23.2020/04/2007
ORC Ref  03440002K13Issued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org