Club
Certificate
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°38.1°37.8°
Beat VMG3.203.864.334.584.704.774.82
52°4.885.736.236.486.606.666.73
60°5.135.956.396.636.766.846.92
75°5.286.096.526.776.957.097.23
90°5.176.066.596.867.037.227.50
110°5.126.136.677.017.307.537.86
120°4.955.976.596.967.277.568.08
135°4.445.466.246.717.057.388.01
150°3.764.805.666.326.737.057.67
Run VMG3.254.154.925.616.196.627.23
Gybe Angles146.0°151.1°154.1°161.0°175.4°179.0°179.0°

APH: 612.4

CDL: 7.782

GPH: 686.7

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 Allowance0.330%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 FlyingSymmetric61.7861.78Asymmetric
STORM SAIL AREAS (m²)
Trysail8.47Storm Jib7.23Heavy Weather Jib19.50
SAIL LIMITS
Headsails5  Spinnakers4
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  03440002JVSIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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 VMG1123.8931.5831.9785.4766.3755.1747.5
52°737.7628.2577.9555.9545.8540.2535.1
60°701.5604.7563.3543.3532.4526.5520.3
75°682.2590.7552.2531.7517.7507.9497.7
90°696.2593.7546.7524.8512.2498.6480.0
110°703.2587.1539.4513.2493.3478.0458.2
120°727.8602.6546.4517.6495.3476.5445.5
135°810.5659.1576.6536.8510.8488.1449.4
150°958.2750.8636.0569.5534.7510.4469.6
Run VMG1106.4866.5731.0642.2581.5543.8497.6
Selected Courses
Windward / Leeward1115.1899.0781.4713.8673.9649.4622.6
All purpose859.8708.4631.6590.7567.3551.2530.2
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward746.90.8033
All purpose612.40.9797
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7069
Downwind "popa"0.8453
70% up, 30% down "Ilhabela"0.7434
30% up, 70% down "Ilhabela-inverso"0.7984
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Predominantly Upwind660.10.9090
Predominantly Downwind623.40.9624
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low784.10.7652
Triple Number All Purpose Medium608.30.9864
Triple Number All Purpose High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Predominantly Upwind660.10.9090
Predominantly Downwind623.40.9624
Predominantly Upwind Low867.70.6915
Predominantly Upwind Medium679.30.8833
Predominantly Upwind High635.00.9448
Predominantly Downwind Low860.90.6969
Predominantly Downwind Medium617.80.9712
Predominantly Downwind High518.71.1568
Chicago-Mac Upwind0.8931
Chicago-Mac All Purpose0.9164
Chicago-Mac Downwind0.9457
Bayview-Mac Cove Island0.8541
Bayview-Mac Shore0.8625
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching584.61.0264
Predominantly Reaching Low713.90.8405
Predominantly Reaching Medium579.11.0361
Predominantly Reaching High516.21.1623
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1098.40.5462
5-Band Low / Medium920.30.6520
5-Band Medium728.40.8237
5-Band Medium / High654.40.9168
5-Band High627.20.9566
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance665.5
Triple Number Coastal/Long Distance Low784.1
Triple Number Coastal/Long Distance Medium608.3
Triple Number Coastal/Long Distance High547.4
Triple Number Windward/Leeward Low1007.0
Triple Number Windward/Leeward Medium741.8
Triple Number Windward/Leeward High645.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7652
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.0961
Triple Number Windward/Leeward Low0.5958
Triple Number Windward/Leeward Medium0.8088
Triple Number Windward/Leeward High0.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low784.1
Triple Number Coastal/Long Distance Medium608.3
Triple Number Coastal/Long Distance High547.4
Triple Number Windward/Leeward Low1007.0
Triple Number Windward/Leeward Medium741.8
Triple Number Windward/Leeward High645.5
Predominantly Upwind660.1
Predominantly Downwind623.4
Predominantly Reaching598.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7652
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.0961
Triple Number Windward/Leeward Low0.5958
Triple Number Windward/Leeward Medium0.8088
Triple Number Windward/Leeward High0.9295
Coastal/Long Distance0.9015
Predominantly Upwind0.9090
Predominantly Downwind0.9624
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7652
Tretall Distanseseilas Mellomvind0.9864
Tretall Distanseseilas Mye vind1.0961
Tretall Pølsebane Lite vind0.5958
Tretall Pølsebane Mellomvind0.8088
Tretall Pølsebane Mye vind0.9295
Distanseseilas ett tall (OSN 8-16kn)0.9015
Distanseseilas ett tall (APH 6-20kn)0.9797
Enkeltall Motvind0.9090
Enkeltall Medvind0.9624
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Coastal/Long Distance665.50.9015
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind660.10.9090
Predominantly Downwind623.40.9624
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore630.60.9514
Cape Doctor Coastal536.51.1183
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7652
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.0961
Triple Number Windward/Leeward Low0.5958
Triple Number Windward/Leeward Medium0.8088
Triple Number Windward/Leeward High0.9295
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7652
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.0961
Triple Number Windward/Leeward Low0.5958
Triple Number Windward/Leeward Medium0.8088
Triple Number Windward/Leeward High0.9295
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Predominantly Upwind660.10.9090
Predominantly Downwind623.40.9624
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance665.50.9015
Triple Number Coastal/Long Distance Low784.10.7652
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1114.2846.8707.8629.0588.3557.3508.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low784.10.7652
Triple Number All Purpose Medium608.30.9864
Triple Number All Purpose High547.41.0961
Triple Number Windward/Leeward Low1007.00.5958
Triple Number Windward/Leeward Medium741.80.8088
Triple Number Windward/Leeward High645.50.9295
Predominantly Upwind660.10.9090
Predominantly Downwind623.40.9624
Predominantly Upwind Low867.70.6915
Predominantly Upwind Medium679.30.8833
Predominantly Upwind High635.00.9448
Predominantly Downwind Low860.90.6969
Predominantly Downwind Medium617.80.9712
Predominantly Downwind High518.71.1568
Chicago-Mac Upwind0.8931
Chicago-Mac All Purpose0.9164
Chicago-Mac Downwind0.9457
Bayview-Mac Cove Island0.8541
Bayview-Mac Shore0.8625
Harvest Moon Regatta536.51.1184
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy636.40.9428
San Francisco Bay Medium736.60.8145
Predominantly Reaching584.61.0264
Predominantly Reaching Low713.90.8405
Predominantly Reaching Medium579.11.0361
Predominantly Reaching High516.21.1623
Windward/Leeward 60-40 Low1011.20.5934
Windward/Leeward 60-40 Medium764.50.7849
Windward/Leeward 60-40 High682.80.8788
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1098.40.5462
5-Band Low / Medium920.30.6520
5-Band Medium728.40.8237
5-Band Medium / High654.40.9168
5-Band High627.20.9566
ORC Ref  03440002JVSIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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 L8.335LSM08.368Acc. 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  03440002JVSIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
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
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment398-20080526150011.1711.1711.170.006.5161.7826/05/2008315-20120504135211.3011.3011.306.286.2058.9904/05/2012
ORC Ref  03440002JVSIssued on 30/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org