Non Spin/HSFClub Certificate2025
Bona DiaRSA-97
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 Angles44.3°44.3°42.3°41.0°40.5°40.4°40.1°40.1°41.3°
Beat VMG1.912.673.283.714.034.244.334.364.24
52°3.024.104.915.485.896.136.256.316.25
60°3.224.335.125.706.086.316.456.526.50
75°3.314.455.285.876.256.496.656.846.87
90°3.204.345.205.846.256.526.727.037.21
110°2.793.934.895.646.186.536.787.217.56
120°2.633.744.705.476.056.446.727.197.62
135°2.283.334.285.055.696.186.517.017.48
150°1.942.883.774.555.215.786.216.777.22
Run VMG1.682.493.284.004.655.235.746.466.92
Gybe Angles150.1°150.1°154.1°161.3°169.4°173.0°176.3°179.0°179.2°
APH ToD:707.8CDL: 6.723APH ToT: 0.8477CertNo:ZAN288
BOAT
ClassMiuraDesignerBerckemeyerBuilderNebeAge date12/1994Series date01/1970Offset fileSA92033.OFFData fileRSA-97
HULL
Length Overall9.330 mMaximum Beam3.148 mDraft1.765 mDisplacement4,700 kgDLR9.7073IMS DivisionCruiser/RacerDynamic Allowance0.640%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeSolid 3 bladesDiameter0.330m
CREW
Maximum weight300 kg(declared)Minimum weight170 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail18.1918.45Headsail Luffed28.7428.74Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail5.42Storm Jib6.77Heavy Weather Jib18.28
SAIL LIMITS
Headsails1
✱ One set on the forestay
✱ 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
Bona DiaRSA-97
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 VMG1885.61350.51098.6970.0892.7849.8831.6825.2848.6
52°1193.8878.3733.8656.6611.1586.9575.6570.8576.2
60°1119.4832.3702.6631.7591.9570.3558.5552.0553.7
75°1088.0808.5681.9612.9575.9554.6541.0526.5523.7
90°1126.5829.1692.0616.8575.8551.9535.4512.4499.1
110°1289.2916.3736.9638.5582.7551.6530.7499.2476.5
120°1369.9962.6765.6658.6594.7558.8535.7500.5472.6
135°1576.01081.9841.6712.9632.3582.6552.8513.3481.5
150°1856.81251.3953.9790.8690.7622.9579.6532.0498.5
Run VMG2148.21444.91097.2899.7774.1688.3626.8557.3519.9
Selected Courses
Windward / Leeward2014.11397.71097.9934.8833.4769.1729.2691.2684.3
All purpose1518.41073.8859.9744.5675.3633.4608.4582.4572.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward878.00.6834
All purpose707.80.8477
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6160
Downwind "popa"0.6898
70% up, 30% down "Ilhabela"0.6364
30% up, 70% down "Ilhabela-inverso"0.6659
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Predominantly Upwind756.30.7934
Predominantly Downwind737.80.8132
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low966.90.6206
Triple Number AP Medium703.40.8530
Triple Number AP High604.90.9919
Triple Number Windward/Leeward Low1308.40.4586
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Single Number Predominant Upwind790.10.7594
Single Number Predominant Reaching711.30.8436
Single Number Predominant Downwind778.40.7708
Predominant Upwind - Low1147.00.5231
Predominant Upwind - Low/Med851.30.7048
Predominant Upwind - Medium725.50.8271
Predominant Upwind - Med/High658.50.9111
Predominant Upwind - High639.10.9388
Predominant Downwind Low1225.60.4895
Predominant Downwind Low/Med865.30.6934
Predominant Downwind Medium703.90.8524
Predominant Downwind Med/High605.30.9912
Predominant Downwind High561.61.0684
Predominant Reaching Low1053.20.5697
Predominant Reaching Low/Med773.30.7759
Predominant Reaching Medium652.20.9200
Predominant Reaching Med/High583.01.0292
Predominant Reaching High554.01.0831
SA/DSPL Upwind16.64SA/DSPL Downwind16.64
Scoring OptionTODTOT
5-Band Windward/Leeward Low1477.50.4061
5-Band Windward/Leeward Low/Med1045.50.5739
5-Band Windward/Leeward Medium852.90.7035
5-Band Windward/Leeward Med/High738.30.8126
5-Band Windward/Leeward High696.60.8613
Windward/Leeward 60-40 Low1466.30.4092
Windward/Leeward 60-40 Low/Med1048.40.5723
Windward/Leeward 60-40 Medium864.40.6941
Windward/Leeward 60-40 Med/High758.40.7911
Windward/Leeward 60-40 High723.40.8295
5-Band AP Low1091.70.5496
5-Band AP Low/Med823.50.7286
5-Band AP Medium689.60.8701
5-Band AP Med/High613.90.9774
5-Band AP High585.21.0252
5-Band SF Bay Tour - Low1261.00.4758
5-Band SF Bay Tour - Low/Med998.60.6009
5-Band SF Bay Tour - Medium822.70.7293
5-Band SF Bay Tour - Med/High721.50.8316
5-Band SF Bay Tour - High686.50.8740
Chicago-Mac Upwind0.7302
Chicago-Mac All Purpose0.7375
Chicago-Mac Downwind0.7365
Bayview-Mac Cove Island0.5168
Bayview-Mac Shore0.5222
Harvest Moon Regatta605.70.9906
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance773.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating773.80.7754
FinRating, kevyt tuuli1458.10.6858
FinRating, kova tuuli590.50.8468
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.7754
Triple Number Coastal/Long Distance Low0.6206
Triple Number Coastal/Long Distance Medium0.8532
Triple Number Coastal/Long Distance High0.9919
Triple Number Windward/Leeward Low0.4809
Triple Number Windward/Leeward Medium0.6871
Triple Number Windward/Leeward High0.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
For information
General Purpose Handicap (GPH)805.9
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low966.8
Triple Number Coastal/Long Distance Medium703.2
Triple Number Coastal/Long Distance High604.9
Triple Number Windward/Leeward Low1247.7
Triple Number Windward/Leeward Medium873.2
Triple Number Windward/Leeward High724.9
Predominantly Upwind756.3
Predominantly Downwind737.8
Predominantly Reaching697.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6206
Triple Number Coastal/Long Distance Medium0.8532
Triple Number Coastal/Long Distance High0.9919
Triple Number Windward/Leeward Low0.4809
Triple Number Windward/Leeward Medium0.6871
Triple Number Windward/Leeward High0.8277
Coastal/Long Distance0.7754
Predominantly Upwind0.7934
Predominantly Downwind0.8132
For information
General Purpose Handicap (GPH)805.9
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8477
Distanseseilas Trippeltall svak vind0.6206
Distanseseilas Trippeltall mellomvind0.8532
Distanseseilas Trippeltall sterk vind0.9919
Pølsebane Trippeltall svak vind0.4809
Pølsebane Trippeltall mellomvind0.6871
Pølsebane Trippeltall sterk vind0.8277
Motvind Singeltall0.7934
Medvind Singeltall0.8132
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Coastal/Long Distance773.80.7754
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind756.30.7934
Predominantly Downwind737.80.8132
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore686.40.8742
Cape Doctor Coastal575.61.0423
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6206
Triple Number Coastal/Long Distance Medium0.8532
Triple Number Coastal/Long Distance High0.9919
Triple Number Windward/Leeward Low0.4809
Triple Number Windward/Leeward Medium0.6871
Triple Number Windward/Leeward High0.8277
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6206
Triple Number Coastal/Long Distance Medium0.8532
Triple Number Coastal/Long Distance High0.9919
Triple Number Windward/Leeward Low0.4809
Triple Number Windward/Leeward Medium0.6871
Triple Number Windward/Leeward High0.8277
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Predominantly Upwind756.30.7934
Predominantly Downwind737.80.8132
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance773.80.7754
Triple Number Coastal/Long Distance Low966.80.6206
Triple Number Coastal/Long Distance Medium703.20.8532
Triple Number Coastal/Long Distance High604.90.9919
Triple Number Windward/Leeward Low1247.70.4809
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2165.01402.41034.0841.3723.1658.5615.1557.0543.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low966.90.6206
Triple Number AP Medium703.40.8530
Triple Number AP High604.90.9919
Triple Number Windward/Leeward Low1308.40.4586
Triple Number Windward/Leeward Medium873.20.6871
Triple Number Windward/Leeward High724.90.8277
Single Number Predominant Upwind790.10.7594
Single Number Predominant Reaching711.30.8436
Single Number Predominant Downwind778.40.7708
Predominant Upwind - Low1147.00.5231
Predominant Upwind - Low/Med851.30.7048
Predominant Upwind - Medium725.50.8271
Predominant Upwind - Med/High658.50.9111
Predominant Upwind - High639.10.9388
Predominant Downwind Low1225.60.4895
Predominant Downwind Low/Med865.30.6934
Predominant Downwind Medium703.90.8524
Predominant Downwind Med/High605.30.9912
Predominant Downwind High561.61.0684
Predominant Reaching Low1053.20.5697
Predominant Reaching Low/Med773.30.7759
Predominant Reaching Medium652.20.9200
Predominant Reaching Med/High583.01.0292
Predominant Reaching High554.01.0831
SA/DSPL Upwind16.64SA/DSPL Downwind16.64
Scoring OptionTODTOT
5-Band Windward/Leeward Low1477.50.4061
5-Band Windward/Leeward Low/Med1045.50.5739
5-Band Windward/Leeward Medium852.90.7035
5-Band Windward/Leeward Med/High738.30.8126
5-Band Windward/Leeward High696.60.8613
Windward/Leeward 60-40 Low1466.30.4092
Windward/Leeward 60-40 Low/Med1048.40.5723
Windward/Leeward 60-40 Medium864.40.6941
Windward/Leeward 60-40 Med/High758.40.7911
Windward/Leeward 60-40 High723.40.8295
5-Band AP Low1091.70.5496
5-Band AP Low/Med823.50.7286
5-Band AP Medium689.60.8701
5-Band AP Med/High613.90.9774
5-Band AP High585.21.0252
5-Band SF Bay Tour - Low1261.00.4758
5-Band SF Bay Tour - Low/Med998.60.6009
5-Band SF Bay Tour - Medium822.70.7293
5-Band SF Bay Tour - Med/High721.50.8316
5-Band SF Bay Tour - High686.50.8740
Chicago-Mac Upwind0.7302
Chicago-Mac All Purpose0.7375
Chicago-Mac Downwind0.7365
Bayview-Mac Cove Island0.5168
Bayview-Mac Shore0.5222
Harvest Moon Regatta605.70.9906
Non Spin/HSFClub Certificate2025
Bona DiaRSA-97
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMiuraMeasurement28/07/2025HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.330Max. Beam3.148Draft1.765Displacement4,700Wetted area21.39IMS L7.850LSM07.852Acc. length9.330Sink (kg/mm) 15.00
VCGD0.146VCGM0.153RM Rated (kg·m) 78.1Limit of positive stability(°) N/AStability IndexN/ADefault crew weight488Declared crew weight300
PROPELLER
Propeller TypeSolid 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.330PBW0.090PIPA0.0136
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionAftInner stayMast materialAluminumSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstaysCheckstaysSpreaders1Rotating mastNo
P10.000IG11.636ISP11.636MDT10.125MDL10.160MDT2MDL2TLNo TaperMWGO
E3.095J3.990BAS1.301FSD0.040SFJSPL3.910WPLTPS4.000BD0.110MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date30/07/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
Bona DiaRSA-97
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.150.651.141.942.5718.1928/07/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.030.621.212.473.865.4011.15NoNo 28.7428/07/2025
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.