Non Spin/HSFClub Certificate2025
Double HelixRSA-4601
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 Angles42.0°42.0°39.7°37.3°36.7°36.1°35.8°35.7°37.2°
Beat VMG2.813.884.685.135.315.425.505.575.46
52°4.385.826.757.167.347.457.537.647.64
60°4.666.086.927.337.547.687.787.927.96
75°4.846.257.037.467.808.038.198.438.55
90°4.676.106.977.457.868.248.569.019.32
110°4.015.436.487.167.648.128.619.7210.47
120°3.554.996.166.967.467.938.429.6411.35
135°2.984.295.476.417.067.527.979.0110.43
150°2.443.604.695.616.416.997.418.219.22
Run VMG2.123.124.064.925.766.517.077.918.82
Gybe Angles144.4°144.4°146.5°173.0°174.8°177.1°178.9°178.9°178.2°
APH ToD:553.8CDL: 9.524APH ToT: 1.0834CertNo:ZAN043
BOAT
ClassMount Gay 30Mod.DesignerSIMONISBuilderHARVEYAge date10/2022Series date02/2022Offset fileMG30-RSA4601.offData fileRSA4601
HULL
Length Overall9.805 mMaximum Beam3.282 mDraft2.264 mDisplacement3,290 kgDLR4.4938IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.098%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.406m
CREW
Maximum weight593 kg(default)Minimum weight463 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail39.0940.27Headsail Luffed26.9626.96Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail10.45Storm Jib9.28Heavy Weather Jib25.03
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ No 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
Double HelixRSA-4601
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 VMG1279.2928.5769.2702.4677.6663.7654.9646.6659.0
52°821.6618.4533.6502.5490.6483.3478.0471.0471.4
60°771.7591.7520.2491.2477.4469.0462.9454.6452.4
75°743.4576.4512.4482.3461.3448.4439.8427.1421.0
90°771.6589.7516.3483.2457.9436.7420.6399.5386.1
110°898.0662.4555.9502.5471.0443.5418.2370.3344.0
120°1012.7721.7584.4517.4482.7454.2427.6373.6317.1
135°1208.2838.8658.6561.4509.8478.8451.9399.7345.1
150°1474.91000.4768.3641.6561.7514.9486.1438.7390.3
Run VMG1698.41155.1887.1732.2624.9553.3509.1455.0408.1
Selected Courses
Windward / Leeward1486.51041.8828.2717.3651.2608.5582.0550.8533.5
All purpose1097.6790.0646.4575.7535.4509.0490.2461.7442.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward681.20.8808
All purpose553.81.0834
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8328
Downwind "popa"0.8542
70% up, 30% down "Ilhabela"0.8392
30% up, 70% down "Ilhabela-inverso"0.8477
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Predominantly Upwind582.41.0302
Predominantly Downwind583.71.0279
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low718.20.8354
Triple Number AP Medium551.61.0878
Triple Number AP High484.21.2392
Triple Number Windward/Leeward Low979.30.6127
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Single Number Predominant Upwind603.60.9940
Single Number Predominant Reaching551.81.0873
Single Number Predominant Downwind612.50.9797
Predominant Upwind - Low820.70.7311
Predominant Upwind - Low/Med633.40.9472
Predominant Upwind - Medium564.91.0622
Predominant Upwind - Med/High527.61.1373
Predominant Upwind - High509.21.1784
Predominant Downwind Low934.80.6418
Predominant Downwind Low/Med675.10.8888
Predominant Downwind Medium561.01.0696
Predominant Downwind Med/High488.01.2296
Predominant Downwind High445.81.3457
Predominant Reaching Low775.20.7740
Predominant Reaching Low/Med591.01.0153
Predominant Reaching Medium515.91.1631
Predominant Reaching Med/High467.51.2834
Predominant Reaching High437.61.3710
SA/DSPL Upwind29.75SA/DSPL Downwind29.75
Scoring OptionTODTOT
5-Band Windward/Leeward Low1100.20.5454
5-Band Windward/Leeward Low/Med794.40.7553
5-Band Windward/Leeward Medium664.00.9036
5-Band Windward/Leeward Med/High587.01.0221
5-Band Windward/Leeward High553.21.0846
Windward/Leeward 60-40 Low1075.40.5579
Windward/Leeward 60-40 Low/Med786.70.7627
Windward/Leeward 60-40 Medium668.20.8979
Windward/Leeward 60-40 Med/High601.00.9984
Windward/Leeward 60-40 High572.61.0479
5-Band AP Low808.70.7419
5-Band AP Low/Med626.30.9581
5-Band AP Medium543.21.1047
5-Band AP Med/High492.41.2186
5-Band AP High463.21.2953
5-Band SF Bay Tour - Low934.00.6424
5-Band SF Bay Tour - Low/Med753.80.7960
5-Band SF Bay Tour - Medium639.80.9378
5-Band SF Bay Tour - Med/High574.41.0445
5-Band SF Bay Tour - High543.01.1049
Chicago-Mac Upwind0.9656
Chicago-Mac All Purpose0.9577
Chicago-Mac Downwind0.9383
Bayview-Mac Cove Island0.6910
Bayview-Mac Shore0.7004
Harvest Moon Regatta481.51.2461
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance605.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9917
Triple Number Coastal/Long Distance Low0.8354
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2392
Triple Number Windward/Leeward Low0.6417
Triple Number Windward/Leeward Medium0.8859
Triple Number Windward/Leeward High1.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
For information
General Purpose Handicap (GPH)623.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low718.2
Triple Number Coastal/Long Distance Medium551.5
Triple Number Coastal/Long Distance High484.2
Triple Number Windward/Leeward Low935.0
Triple Number Windward/Leeward Medium677.3
Triple Number Windward/Leeward High576.9
Predominantly Upwind582.4
Predominantly Downwind583.7
Predominantly Reaching547.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8354
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2392
Triple Number Windward/Leeward Low0.6417
Triple Number Windward/Leeward Medium0.8859
Triple Number Windward/Leeward High1.0400
Coastal/Long Distance0.9917
Predominantly Upwind1.0302
Predominantly Downwind1.0279
For information
General Purpose Handicap (GPH)623.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0834
Distanseseilas Trippeltall svak vind0.8354
Distanseseilas Trippeltall mellomvind1.0879
Distanseseilas Trippeltall sterk vind1.2392
Pølsebane Trippeltall svak vind0.6417
Pølsebane Trippeltall mellomvind0.8859
Pølsebane Trippeltall sterk vind1.0400
Motvind Singeltall1.0302
Medvind Singeltall1.0279
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Coastal/Long Distance605.00.9917
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind582.41.0302
Predominantly Downwind583.71.0279
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore538.71.1138
Cape Doctor Coastal448.01.3393
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8354
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2392
Triple Number Windward/Leeward Low0.6417
Triple Number Windward/Leeward Medium0.8859
Triple Number Windward/Leeward High1.0400
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8354
Triple Number Coastal/Long Distance Medium1.0879
Triple Number Coastal/Long Distance High1.2392
Triple Number Windward/Leeward Low0.6417
Triple Number Windward/Leeward Medium0.8859
Triple Number Windward/Leeward High1.0400
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Predominantly Upwind582.41.0302
Predominantly Downwind583.71.0279
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance605.00.9917
Triple Number Coastal/Long Distance Low718.20.8354
Triple Number Coastal/Long Distance Medium551.51.0879
Triple Number Coastal/Long Distance High484.21.2392
Triple Number Windward/Leeward Low935.00.6417
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1619.41053.2782.0648.4571.1528.5496.0441.0415.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low718.20.8354
Triple Number AP Medium551.61.0878
Triple Number AP High484.21.2392
Triple Number Windward/Leeward Low979.30.6127
Triple Number Windward/Leeward Medium677.30.8859
Triple Number Windward/Leeward High576.91.0400
Single Number Predominant Upwind603.60.9940
Single Number Predominant Reaching551.81.0873
Single Number Predominant Downwind612.50.9797
Predominant Upwind - Low820.70.7311
Predominant Upwind - Low/Med633.40.9472
Predominant Upwind - Medium564.91.0622
Predominant Upwind - Med/High527.61.1373
Predominant Upwind - High509.21.1784
Predominant Downwind Low934.80.6418
Predominant Downwind Low/Med675.10.8888
Predominant Downwind Medium561.01.0696
Predominant Downwind Med/High488.01.2296
Predominant Downwind High445.81.3457
Predominant Reaching Low775.20.7740
Predominant Reaching Low/Med591.01.0153
Predominant Reaching Medium515.91.1631
Predominant Reaching Med/High467.51.2834
Predominant Reaching High437.61.3710
SA/DSPL Upwind29.75SA/DSPL Downwind29.75
Scoring OptionTODTOT
5-Band Windward/Leeward Low1100.20.5454
5-Band Windward/Leeward Low/Med794.40.7553
5-Band Windward/Leeward Medium664.00.9036
5-Band Windward/Leeward Med/High587.01.0221
5-Band Windward/Leeward High553.21.0846
Windward/Leeward 60-40 Low1075.40.5579
Windward/Leeward 60-40 Low/Med786.70.7627
Windward/Leeward 60-40 Medium668.20.8979
Windward/Leeward 60-40 Med/High601.00.9984
Windward/Leeward 60-40 High572.61.0479
5-Band AP Low808.70.7419
5-Band AP Low/Med626.30.9581
5-Band AP Medium543.21.1047
5-Band AP Med/High492.41.2186
5-Band AP High463.21.2953
5-Band SF Bay Tour - Low934.00.6424
5-Band SF Bay Tour - Low/Med753.80.7960
5-Band SF Bay Tour - Medium639.80.9378
5-Band SF Bay Tour - Med/High574.41.0445
5-Band SF Bay Tour - High543.01.1049
Chicago-Mac Upwind0.9656
Chicago-Mac All Purpose0.9577
Chicago-Mac Downwind0.9383
Bayview-Mac Cove Island0.6910
Bayview-Mac Shore0.7004
Harvest Moon Regatta481.51.2461
Non Spin/HSFClub Certificate2025
Double HelixRSA-4601
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMount Gay 30Mod.Measurement17/02/2022HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.805Max. Beam3.282Draft2.264Displacement3,290Wetted area20.90IMS L9.336LSM09.012Acc. length9.805Sink (kg/mm) 15.81
VCGD-0.101VCGM-0.134RM Rated (kg·m) 97.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight593Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.406PBWPIPA0.0033
EDL0.575ST10.042ST20.180
ST30.180ST40.112ST50.270
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1Checkstays0Spreaders2Rotating mastNo
P12.570IG12.900ISP14.150MDT10.102MDL10.165MDT2MDL2TLTaperMWGO0.200
E4.750J3.802BAS1.600FSDFoilSFJ0.210SPLWPLTPS6.022BD0.140MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date17/02/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
Double HelixRSA-4601
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain1.201.612.243.244.0439.092021 SqHD
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ1 Jub0.100.651.182.113.074.0312.85YesNo 26.96