Club Certificate2025
GambitRSA-665
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
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 Angles44.9°44.9°43.6°42.3°41.5°40.6°39.9°39.7°40.7°
Beat VMG1.762.483.093.543.894.184.364.444.35
52°2.773.854.715.335.776.086.266.386.35
60°2.984.094.955.575.996.266.446.596.59
75°3.104.245.115.766.176.446.636.896.98
90°3.254.515.506.146.476.636.737.037.27
110°3.344.625.626.276.656.937.167.457.64
120°3.214.465.486.196.626.947.237.718.04
135°2.824.015.055.876.406.767.087.708.38
150°2.393.484.475.336.016.466.787.388.00
Run VMG2.073.013.884.645.315.856.276.887.42
Gybe Angles148.3°148.3°151.6°153.9°159.7°165.3°171.8°177.7°177.4°
APH ToD:679.2CDL: 6.500APH ToT: 0.8834CertNo:ZAC285
BOAT
ClassMuiraDesignerOswald BerckemeyerBuilderNebe BoatbuildersAge date01/1985Series date01/1978Offset filesa92033.offData fileRSA665
HULL
Length Overall9.330 mMaximum Beam3.148 mDraft1.721 mDisplacement4,100 kgDLR8.9182IMS DivisionCruiser/RacerDynamic Allowance0.540%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeSolid 2 bladesDiameter0.350m
CREW
Maximum weight476 kg(default)Minimum weight346 kg ✱ when appliedNon Manual PowerCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail18.1018.31Headsail Luffed22.5622.56Headsail FlyingSymmetric65.4265.42Asymmetric
STORM SAIL AREAS (m²)
Trysail5.58Storm Jib6.58Heavy Weather Jib17.75
SAIL LIMITS
Headsails5
✱ One set on the forestay
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.
Club Certificate2025
GambitRSA-665
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
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 VMG2051.11450.01163.51016.0924.4861.9825.8810.7827.2
52°1300.5935.2763.8675.9623.8592.5575.0564.1566.6
60°1209.3880.9728.0646.9601.1574.7559.0546.3546.1
75°1161.3849.9704.7625.1583.1558.9542.7522.9515.8
90°1106.4798.3654.9586.2556.3543.0534.9512.0495.1
110°1077.1778.7640.2573.7541.1519.3503.0483.5471.1
120°1122.9806.6657.4581.6544.2519.0498.2466.6447.7
135°1278.1898.4713.5612.8562.5532.7508.5467.3429.6
150°1505.31035.7804.7675.2598.9557.6530.9488.1449.9
Run VMG1741.21195.9928.0776.4677.6615.0574.0523.2485.4
Selected Courses
Windward / Leeward1895.61322.91045.8896.2801.0738.5699.9667.0656.3
All purpose1436.21017.3816.8711.3650.2612.1588.0562.4550.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward841.30.7132
All purpose679.20.8834
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.5955
Downwind "popa"0.7939
70% up, 30% down "Ilhabela"0.6438
30% up, 70% down "Ilhabela-inverso"0.7218
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Predominantly Upwind749.80.8002
Predominantly Downwind677.20.8860
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low917.10.6543
Triple Number AP Medium675.00.8889
Triple Number AP High584.41.0267
Triple Number Windward/Leeward Low1240.60.4836
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Single Number Predominant Upwind785.90.7635
Single Number Predominant Reaching675.00.8889
Single Number Predominant Downwind710.50.8445
Predominant Upwind - Low1154.90.5195
Predominant Upwind - Low/Med849.50.7063
Predominant Upwind - Medium720.50.8327
Predominant Upwind - Med/High648.10.9258
Predominant Upwind - High624.20.9612
Predominant Downwind Low1083.30.5539
Predominant Downwind Low/Med779.00.7702
Predominant Downwind Medium647.70.9263
Predominant Downwind Med/High570.41.0520
Predominant Downwind High531.81.1283
Predominant Reaching Low984.80.6093
Predominant Reaching Low/Med725.70.8267
Predominant Reaching Medium620.80.9666
Predominant Reaching Med/High563.81.0643
Predominant Reaching High535.31.1210
SA/DSPL Upwind15.80SA/DSPL Downwind32.45
Scoring OptionTODTOT
5-Band Windward/Leeward Low1396.90.4295
5-Band Windward/Leeward Low/Med997.70.6014
5-Band Windward/Leeward Medium818.40.7332
5-Band Windward/Leeward Med/High709.40.8458
5-Band Windward/Leeward High670.80.8944
Windward/Leeward 60-40 Low1423.30.4216
Windward/Leeward 60-40 Low/Med1021.90.5872
Windward/Leeward 60-40 Medium842.80.7119
Windward/Leeward 60-40 Med/High735.10.8162
Windward/Leeward 60-40 High699.90.8573
5-Band AP Low1014.30.5915
5-Band AP Low/Med784.50.7648
5-Band AP Medium662.60.9055
5-Band AP Med/High593.01.0119
5-Band AP High564.81.0624
5-Band SF Bay Tour - Low1204.90.4980
5-Band SF Bay Tour - Low/Med959.10.6256
5-Band SF Bay Tour - Medium793.60.7561
5-Band SF Bay Tour - Med/High695.00.8633
5-Band SF Bay Tour - High659.90.9092
Chicago-Mac Upwind0.7329
Chicago-Mac All Purpose0.7737
Chicago-Mac Downwind0.8109
Bayview-Mac Cove Island0.5456
Bayview-Mac Shore0.5487
Harvest Moon Regatta577.41.0391
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance741.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating741.30.8094
FinRating, kevyt tuuli1369.20.7304
FinRating, kova tuuli569.00.8787
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8094
Triple Number Coastal/Long Distance Low0.6543
Triple Number Coastal/Long Distance Medium0.8890
Triple Number Coastal/Long Distance High1.0267
Triple Number Windward/Leeward Low0.5066
Triple Number Windward/Leeward Medium0.7164
Triple Number Windward/Leeward High0.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
For information
General Purpose Handicap (GPH)771.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low917.0
Triple Number Coastal/Long Distance Medium674.9
Triple Number Coastal/Long Distance High584.4
Triple Number Windward/Leeward Low1184.4
Triple Number Windward/Leeward Medium837.5
Triple Number Windward/Leeward High697.2
Predominantly Upwind749.8
Predominantly Downwind677.2
Predominantly Reaching652.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6543
Triple Number Coastal/Long Distance Medium0.8890
Triple Number Coastal/Long Distance High1.0267
Triple Number Windward/Leeward Low0.5066
Triple Number Windward/Leeward Medium0.7164
Triple Number Windward/Leeward High0.8606
Coastal/Long Distance0.8094
Predominantly Upwind0.8002
Predominantly Downwind0.8860
For information
General Purpose Handicap (GPH)771.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8834
Distanseseilas Trippeltall svak vind0.6543
Distanseseilas Trippeltall mellomvind0.8890
Distanseseilas Trippeltall sterk vind1.0267
Pølsebane Trippeltall svak vind0.5066
Pølsebane Trippeltall mellomvind0.7164
Pølsebane Trippeltall sterk vind0.8606
Motvind Singeltall0.8002
Medvind Singeltall0.8860
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Coastal/Long Distance741.30.8094
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind749.80.8002
Predominantly Downwind677.20.8860
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore659.50.9098
Cape Doctor Coastal554.11.0828
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6543
Triple Number Coastal/Long Distance Medium0.8890
Triple Number Coastal/Long Distance High1.0267
Triple Number Windward/Leeward Low0.5066
Triple Number Windward/Leeward Medium0.7164
Triple Number Windward/Leeward High0.8606
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6543
Triple Number Coastal/Long Distance Medium0.8890
Triple Number Coastal/Long Distance High1.0267
Triple Number Windward/Leeward Low0.5066
Triple Number Windward/Leeward Medium0.7164
Triple Number Windward/Leeward High0.8606
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Predominantly Upwind749.80.8002
Predominantly Downwind677.20.8860
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance741.30.8094
Triple Number Coastal/Long Distance Low917.00.6543
Triple Number Coastal/Long Distance Medium674.90.8890
Triple Number Coastal/Long Distance High584.41.0267
Triple Number Windward/Leeward Low1184.40.5066
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1991.81310.2978.9803.5696.2635.3593.9537.8523.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low917.10.6543
Triple Number AP Medium675.00.8889
Triple Number AP High584.41.0267
Triple Number Windward/Leeward Low1240.60.4836
Triple Number Windward/Leeward Medium837.50.7164
Triple Number Windward/Leeward High697.20.8606
Single Number Predominant Upwind785.90.7635
Single Number Predominant Reaching675.00.8889
Single Number Predominant Downwind710.50.8445
Predominant Upwind - Low1154.90.5195
Predominant Upwind - Low/Med849.50.7063
Predominant Upwind - Medium720.50.8327
Predominant Upwind - Med/High648.10.9258
Predominant Upwind - High624.20.9612
Predominant Downwind Low1083.30.5539
Predominant Downwind Low/Med779.00.7702
Predominant Downwind Medium647.70.9263
Predominant Downwind Med/High570.41.0520
Predominant Downwind High531.81.1283
Predominant Reaching Low984.80.6093
Predominant Reaching Low/Med725.70.8267
Predominant Reaching Medium620.80.9666
Predominant Reaching Med/High563.81.0643
Predominant Reaching High535.31.1210
SA/DSPL Upwind15.80SA/DSPL Downwind32.45
Scoring OptionTODTOT
5-Band Windward/Leeward Low1396.90.4295
5-Band Windward/Leeward Low/Med997.70.6014
5-Band Windward/Leeward Medium818.40.7332
5-Band Windward/Leeward Med/High709.40.8458
5-Band Windward/Leeward High670.80.8944
Windward/Leeward 60-40 Low1423.30.4216
Windward/Leeward 60-40 Low/Med1021.90.5872
Windward/Leeward 60-40 Medium842.80.7119
Windward/Leeward 60-40 Med/High735.10.8162
Windward/Leeward 60-40 High699.90.8573
5-Band AP Low1014.30.5915
5-Band AP Low/Med784.50.7648
5-Band AP Medium662.60.9055
5-Band AP Med/High593.01.0119
5-Band AP High564.81.0624
5-Band SF Bay Tour - Low1204.90.4980
5-Band SF Bay Tour - Low/Med959.10.6256
5-Band SF Bay Tour - Medium793.60.7561
5-Band SF Bay Tour - Med/High695.00.8633
5-Band SF Bay Tour - High659.90.9092
Chicago-Mac Upwind0.7329
Chicago-Mac All Purpose0.7737
Chicago-Mac Downwind0.8109
Bayview-Mac Cove Island0.5456
Bayview-Mac Shore0.5487
Harvest Moon Regatta577.41.0391
Club Certificate2025
GambitRSA-665
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMuiraMeasurement31/05/2025HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.330Max. Beam3.148Draft1.721Displacement4,100Wetted area20.33IMS L7.782LSM07.717Acc. length9.330Sink (kg/mm) 14.28
VCGD0.118VCGM0.167RM Rated (kg·m) 70.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight476Declared crew weightN/A
PROPELLER
Propeller TypeSolid 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.350PBW0.140PIPA0.0128
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionFixedInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstaysCheckstaysSpreaders1Rotating mastNo
P10.090IG11.465ISP11.675MDT10.120MDL10.180MDT2MDL2TLMWGO
E3.160J3.880BAS1.455FSDSFJSPL3.550WPLTPSBD0.130MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date10/06/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
GambitRSA-665
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.120.611.081.892.5618.1031/05/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.080.480.931.933.084.3111.04NoNo 22.5631/05/2025
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment011.3311.3611.356.946.8465.4231/05/2025
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.