Non Spin/HSFClub Certificate2025
SizweRSA-1235
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 Angles43.9°43.9°42.1°40.8°40.1°39.6°39.3°39.2°40.2°
Beat VMG1.962.723.323.764.104.344.454.504.40
52°3.074.164.975.545.946.206.346.416.37
60°3.264.385.185.756.126.366.516.616.60
75°3.344.505.335.926.286.526.706.916.96
90°3.264.405.255.886.286.556.757.077.28
110°2.853.984.935.676.206.546.797.237.59
120°2.683.794.745.496.076.456.727.197.62
135°2.333.384.325.085.716.196.517.007.46
150°1.972.923.824.605.255.816.236.777.21
Run VMG1.702.533.334.054.705.285.786.486.93
Gybe Angles150.5°150.5°155.0°164.0°171.2°174.1°176.8°179.0°179.5°
APH ToD:700.1CDL: 6.841APH ToT: 0.8570CertNo:ZAN153
BOAT
ClassMiuraDesignerOswald BerckemeyerBuilderNebeAge date01/1991Series date01/1970Offset fileSA92033.OFFData fileRSA1235
HULL
Length Overall9.330 mMaximum Beam3.148 mDraft1.768 mDisplacement4,777 kgDLR9.7625IMS DivisionCruiser/RacerDynamic Allowance0.630%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0.360m
CREW
Maximum weight425 kg(declared)Minimum weight295 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail18.9219.24Headsail Luffed27.2627.26Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail5.48Storm Jib7.19Heavy Weather Jib19.41
SAIL LIMITS
Headsails5
✱ Zero set flying
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.
Non Spin/HSFClub Certificate2025
SizweRSA-1235
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 VMG1837.51323.71082.8957.2877.5829.5808.8800.0818.3
52°1172.5864.6724.4650.2605.8580.4567.6561.3564.9
60°1104.2821.8694.8626.6588.1565.6552.9544.5545.3
75°1076.3800.0675.3608.6573.0552.0537.4520.8516.9
90°1105.8818.3686.4612.5573.1549.9533.5509.3494.7
110°1264.3903.7730.8635.4580.8550.6529.9497.8474.2
120°1343.6949.1759.0655.4593.3558.3535.6500.6472.4
135°1547.61066.6833.1708.4630.0581.7552.6514.1482.7
150°1825.21232.5941.8783.3686.0620.1578.1531.9499.2
Run VMG2112.21422.81081.9888.1765.6682.2622.4555.7519.4
Selected Courses
Windward / Leeward1971.51373.31082.3922.6821.6755.8715.6677.8668.9
All purpose1488.91056.9849.6737.2669.0626.7601.3574.7563.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward864.50.6940
All purpose700.10.8570
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6288
Downwind "popa"0.6978
70% up, 30% down "Ilhabela"0.6480
30% up, 70% down "Ilhabela-inverso"0.6756
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Predominantly Upwind746.50.8037
Predominantly Downwind730.90.8209
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low953.30.6294
Triple Number AP Medium696.30.8617
Triple Number AP High597.71.0039
Triple Number Windward/Leeward Low1286.50.4664
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Single Number Predominant Upwind778.70.7705
Single Number Predominant Reaching704.10.8521
Single Number Predominant Downwind770.10.7791
Predominant Upwind - Low1127.10.5323
Predominant Upwind - Low/Med840.60.7138
Predominant Upwind - Medium716.60.8373
Predominant Upwind - Med/High648.10.9259
Predominant Upwind - High627.10.9568
Predominant Downwind Low1206.50.4973
Predominant Downwind Low/Med855.40.7015
Predominant Downwind Medium697.60.8600
Predominant Downwind Med/High600.80.9987
Predominant Downwind High557.71.0759
Predominant Reaching Low1037.00.5786
Predominant Reaching Low/Med765.30.7841
Predominant Reaching Medium647.10.9272
Predominant Reaching Med/High578.51.0371
Predominant Reaching High549.01.0928
SA/DSPL Upwind16.20SA/DSPL Downwind16.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1450.90.4135
5-Band Windward/Leeward Low/Med1030.40.5823
5-Band Windward/Leeward Medium840.30.7141
5-Band Windward/Leeward Med/High724.90.8277
5-Band Windward/Leeward High682.80.8787
Windward/Leeward 60-40 Low1439.10.4169
Windward/Leeward 60-40 Low/Med1033.10.5808
Windward/Leeward 60-40 Medium851.00.7050
Windward/Leeward 60-40 Med/High743.20.8073
Windward/Leeward 60-40 High707.20.8485
5-Band AP Low1075.10.5581
5-Band AP Low/Med813.90.7372
5-Band AP Medium682.70.8789
5-Band AP Med/High606.80.9888
5-Band AP High577.41.0391
5-Band SF Bay Tour - Low1239.90.4839
5-Band SF Bay Tour - Low/Med984.70.6093
5-Band SF Bay Tour - Medium811.30.7396
5-Band SF Bay Tour - Med/High709.00.8463
5-Band SF Bay Tour - High673.10.8914
Chicago-Mac Upwind0.7405
Chicago-Mac All Purpose0.7468
Chicago-Mac Downwind0.7448
Bayview-Mac Cove Island0.5256
Bayview-Mac Shore0.5311
Harvest Moon Regatta602.40.9960
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance764.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating764.90.7845
FinRating, kevyt tuuli1431.90.6984
FinRating, kova tuuli583.00.8577
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.7844
Triple Number Coastal/Long Distance Low0.6294
Triple Number Coastal/Long Distance Medium0.8618
Triple Number Coastal/Long Distance High1.0039
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6972
Triple Number Windward/Leeward High0.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
For information
General Purpose Handicap (GPH)796.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low953.3
Triple Number Coastal/Long Distance Medium696.2
Triple Number Coastal/Long Distance High597.7
Triple Number Windward/Leeward Low1227.7
Triple Number Windward/Leeward Medium860.6
Triple Number Windward/Leeward High711.5
Predominantly Upwind746.5
Predominantly Downwind730.9
Predominantly Reaching691.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6294
Triple Number Coastal/Long Distance Medium0.8618
Triple Number Coastal/Long Distance High1.0039
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6972
Triple Number Windward/Leeward High0.8433
Coastal/Long Distance0.7844
Predominantly Upwind0.8037
Predominantly Downwind0.8209
For information
General Purpose Handicap (GPH)796.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8570
Distanseseilas Trippeltall svak vind0.6294
Distanseseilas Trippeltall mellomvind0.8618
Distanseseilas Trippeltall sterk vind1.0039
Pølsebane Trippeltall svak vind0.4887
Pølsebane Trippeltall mellomvind0.6972
Pølsebane Trippeltall sterk vind0.8433
Motvind Singeltall0.8037
Medvind Singeltall0.8209
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Coastal/Long Distance764.90.7844
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind746.50.8037
Predominantly Downwind730.90.8209
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore671.60.8935
Cape Doctor Coastal567.01.0583
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6294
Triple Number Coastal/Long Distance Medium0.8618
Triple Number Coastal/Long Distance High1.0039
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6972
Triple Number Windward/Leeward High0.8433
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6294
Triple Number Coastal/Long Distance Medium0.8618
Triple Number Coastal/Long Distance High1.0039
Triple Number Windward/Leeward Low0.4887
Triple Number Windward/Leeward Medium0.6972
Triple Number Windward/Leeward High0.8433
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Predominantly Upwind746.50.8037
Predominantly Downwind730.90.8209
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance764.90.7844
Triple Number Coastal/Long Distance Low953.30.6294
Triple Number Coastal/Long Distance Medium696.20.8618
Triple Number Coastal/Long Distance High597.71.0039
Triple Number Windward/Leeward Low1227.70.4887
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2118.41378.21020.0831.7715.5651.1608.4551.9537.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low953.30.6294
Triple Number AP Medium696.30.8617
Triple Number AP High597.71.0039
Triple Number Windward/Leeward Low1286.50.4664
Triple Number Windward/Leeward Medium860.60.6972
Triple Number Windward/Leeward High711.50.8433
Single Number Predominant Upwind778.70.7705
Single Number Predominant Reaching704.10.8521
Single Number Predominant Downwind770.10.7791
Predominant Upwind - Low1127.10.5323
Predominant Upwind - Low/Med840.60.7138
Predominant Upwind - Medium716.60.8373
Predominant Upwind - Med/High648.10.9259
Predominant Upwind - High627.10.9568
Predominant Downwind Low1206.50.4973
Predominant Downwind Low/Med855.40.7015
Predominant Downwind Medium697.60.8600
Predominant Downwind Med/High600.80.9987
Predominant Downwind High557.71.0759
Predominant Reaching Low1037.00.5786
Predominant Reaching Low/Med765.30.7841
Predominant Reaching Medium647.10.9272
Predominant Reaching Med/High578.51.0371
Predominant Reaching High549.01.0928
SA/DSPL Upwind16.20SA/DSPL Downwind16.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1450.90.4135
5-Band Windward/Leeward Low/Med1030.40.5823
5-Band Windward/Leeward Medium840.30.7141
5-Band Windward/Leeward Med/High724.90.8277
5-Band Windward/Leeward High682.80.8787
Windward/Leeward 60-40 Low1439.10.4169
Windward/Leeward 60-40 Low/Med1033.10.5808
Windward/Leeward 60-40 Medium851.00.7050
Windward/Leeward 60-40 Med/High743.20.8073
Windward/Leeward 60-40 High707.20.8485
5-Band AP Low1075.10.5581
5-Band AP Low/Med813.90.7372
5-Band AP Medium682.70.8789
5-Band AP Med/High606.80.9888
5-Band AP High577.41.0391
5-Band SF Bay Tour - Low1239.90.4839
5-Band SF Bay Tour - Low/Med984.70.6093
5-Band SF Bay Tour - Medium811.30.7396
5-Band SF Bay Tour - Med/High709.00.8463
5-Band SF Bay Tour - High673.10.8914
Chicago-Mac Upwind0.7405
Chicago-Mac All Purpose0.7468
Chicago-Mac Downwind0.7448
Bayview-Mac Cove Island0.5256
Bayview-Mac Shore0.5311
Harvest Moon Regatta602.40.9960
Non Spin/HSFClub Certificate2025
SizweRSA-1235
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMiuraMeasurement03/06/2017HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.330Max. Beam3.148Draft1.768Displacement4,777Wetted area21.57IMS L7.890LSM07.879Acc. length9.330Sink (kg/mm) 15.13
VCGD0.152VCGM0.154RM Rated (kg·m) 79.4Limit of positive stability(°) N/AStability IndexN/ADefault crew weight490Declared crew weight425
PROPELLER
Propeller TypeFeathering 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.360PBW0.130PIPA0.0061
PSD0.025PHD0.065PHL0.110
PSA29.0°ESL0.740
ST10.020ST20.085ST30.073
ST40.055ST50.170
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders1Rotating mastNo
P10.100IG11.989ISP11.929MDT10.130MDL10.180MDT2MDL2TLNo TaperMWGO
E3.100J3.880BAS1.449FSDNo FoilSFJ-0.010SPL3.880WPLTPSBD0.120MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date03/06/2017
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
SizweRSA-1235
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM1-20.140.661.202.042.6418.9223/04/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ2-30.050.531.062.223.555.0611.54NoNo 27.2623/04/2025
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.