Club Certificate2025
ATURARSA-3786
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 Angles43.2°43.2°41.1°39.3°37.7°36.9°36.5°36.5°37.0°
Beat VMG2.403.364.144.725.065.225.315.415.42
52°3.755.116.126.767.097.247.347.457.49
60°3.995.386.376.947.257.437.547.677.73
75°4.135.546.527.077.417.667.848.068.19
90°4.255.776.827.287.517.728.008.428.69
110°4.365.927.027.587.998.298.549.029.49
120°4.225.796.947.558.048.498.919.6110.41
135°3.685.196.437.227.758.288.8310.3712.71
150°3.074.385.536.517.207.648.089.0511.77
Run VMG2.663.794.795.636.266.687.067.8410.19
Gybe Angles143.1°143.1°147.1°149.4°152.5°156.1°158.3°147.0°142.6°
APH ToD:549.4CDL: 9.243APH ToT: 1.0921CertNo:ZAC013
BOAT
ClassJ-105DesignerJohnstoneBuilderJ BoatsAge date01/2006Series date01/1991Offset filej105.offData fileRSA3786
HULL
Length Overall10.570 mMaximum Beam3.344 mDraft2.022 mDisplacement4,168 kgDLR4.8858IMS DivisionCruiser/RacerDynamic Allowance0.190%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight580 kg(declared)Minimum weight450 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail32.6133.23Headsail Luffed25.3025.30Headsail FlyingSymmetricAsymmetric106.17106.17 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail9.72Storm Jib7.20Heavy Weather Jib19.44
SAIL LIMITS
Headsails5Spinnakers4
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
ATURARSA-3786
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 VMG1500.31072.9869.5763.2711.2689.9677.4665.1664.6
52°959.4704.0587.9532.5508.0496.9490.8483.5480.9
60°902.3668.8565.5518.7496.3484.4477.7469.3465.7
75°872.7649.8552.4508.9485.9470.2458.9446.5439.5
90°847.4624.1527.5494.7479.6466.2450.1427.5414.4
110°826.2608.0512.5474.9450.5434.4421.6399.3379.5
120°852.9621.9519.1477.0447.8424.1404.1374.7345.8
135°977.6693.3560.0498.7464.6434.9407.8347.1283.2
150°1173.4822.5650.6553.4500.2470.9445.3397.8305.9
Run VMG1355.5949.8751.3639.0575.1538.9510.2459.4353.2
Selected Courses
Windward / Leeward1427.71011.3810.4701.1643.1614.4593.8562.2508.9
All purpose1082.4778.9637.0567.0530.1508.9492.5466.2434.0
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward675.10.8887
All purpose549.41.0921
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7707
Downwind "popa"0.9494
70% up, 30% down "Ilhabela"0.8169
30% up, 70% down "Ilhabela-inverso"0.8877
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Predominantly Upwind598.11.0032
Predominantly Downwind553.01.0850
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low708.00.8475
Triple Number AP Medium546.11.0988
Triple Number AP High486.71.2327
Triple Number Windward/Leeward Low951.60.6305
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Single Number Predominant Upwind623.40.9625
Single Number Predominant Reaching545.91.0991
Single Number Predominant Downwind575.41.0427
Predominant Upwind - Low871.40.6886
Predominant Upwind - Low/Med658.90.9106
Predominant Upwind - Medium578.61.0370
Predominant Upwind - Med/High538.41.1144
Predominant Upwind - High516.61.1614
Predominant Downwind Low839.00.7151
Predominant Downwind Low/Med622.40.9641
Predominant Downwind Medium534.81.1220
Predominant Downwind Med/High478.41.2541
Predominant Downwind High432.81.3864
Predominant Reaching Low757.30.7923
Predominant Reaching Low/Med578.61.0370
Predominant Reaching Medium512.11.1717
Predominant Reaching Med/High469.41.2781
Predominant Reaching High436.61.3741
SA/DSPL Upwind22.26SA/DSPL Downwind53.33
Scoring OptionTODTOT
5-Band Windward/Leeward Low1065.20.5633
5-Band Windward/Leeward Low/Med776.80.7724
5-Band Windward/Leeward Medium657.80.9121
5-Band Windward/Leeward Med/High596.11.0065
5-Band Windward/Leeward High558.51.0743
Windward/Leeward 60-40 Low1078.00.5566
Windward/Leeward 60-40 Low/Med789.10.7603
Windward/Leeward 60-40 Medium671.60.8934
Windward/Leeward 60-40 Med/High612.90.9789
Windward/Leeward 60-40 High580.21.0341
5-Band AP Low779.90.7694
5-Band AP Low/Med617.40.9718
5-Band AP Medium538.41.1143
5-Band AP Med/High494.01.2147
5-Band AP High465.21.2898
5-Band SF Bay Tour - Low919.50.6525
5-Band SF Bay Tour - Low/Med743.70.8068
5-Band SF Bay Tour - Medium634.20.9461
5-Band SF Bay Tour - Med/High576.71.0404
5-Band SF Bay Tour - High541.61.1078
Chicago-Mac Upwind0.9325
Chicago-Mac All Purpose0.9705
Chicago-Mac Downwind1.0050
Bayview-Mac Cove Island0.7077
Bayview-Mac Shore0.7118
Harvest Moon Regatta477.71.2559
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance596.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating596.81.0054
FinRating, kevyt tuuli1044.30.9576
FinRating, kova tuuli465.61.0739
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0054
Triple Number Coastal/Long Distance Low0.8475
Triple Number Coastal/Long Distance Medium1.0989
Triple Number Coastal/Long Distance High1.2327
Triple Number Windward/Leeward Low0.6587
Triple Number Windward/Leeward Medium0.8966
Triple Number Windward/Leeward High1.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
For information
General Purpose Handicap (GPH)617.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low708.0
Triple Number Coastal/Long Distance Medium546.0
Triple Number Coastal/Long Distance High486.7
Triple Number Windward/Leeward Low910.9
Triple Number Windward/Leeward Medium669.2
Triple Number Windward/Leeward High587.1
Predominantly Upwind598.1
Predominantly Downwind553.0
Predominantly Reaching532.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8475
Triple Number Coastal/Long Distance Medium1.0989
Triple Number Coastal/Long Distance High1.2327
Triple Number Windward/Leeward Low0.6587
Triple Number Windward/Leeward Medium0.8966
Triple Number Windward/Leeward High1.0219
Coastal/Long Distance1.0054
Predominantly Upwind1.0032
Predominantly Downwind1.0850
For information
General Purpose Handicap (GPH)617.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0921
Distanseseilas Trippeltall svak vind0.8475
Distanseseilas Trippeltall mellomvind1.0989
Distanseseilas Trippeltall sterk vind1.2327
Pølsebane Trippeltall svak vind0.6587
Pølsebane Trippeltall mellomvind0.8966
Pølsebane Trippeltall sterk vind1.0219
Motvind Singeltall1.0032
Medvind Singeltall1.0850
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Coastal/Long Distance596.81.0054
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind598.11.0032
Predominantly Downwind553.01.0850
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore524.91.1430
Cape Doctor Coastal443.71.3524
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8475
Triple Number Coastal/Long Distance Medium1.0989
Triple Number Coastal/Long Distance High1.2327
Triple Number Windward/Leeward Low0.6587
Triple Number Windward/Leeward Medium0.8966
Triple Number Windward/Leeward High1.0219
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8475
Triple Number Coastal/Long Distance Medium1.0989
Triple Number Coastal/Long Distance High1.2327
Triple Number Windward/Leeward Low0.6587
Triple Number Windward/Leeward Medium0.8966
Triple Number Windward/Leeward High1.0219
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Predominantly Upwind598.11.0032
Predominantly Downwind553.01.0850
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance596.81.0054
Triple Number Coastal/Long Distance Low708.00.8475
Triple Number Coastal/Long Distance Medium546.01.0989
Triple Number Coastal/Long Distance High486.71.2327
Triple Number Windward/Leeward Low910.90.6587
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1506.31005.2761.4634.9564.2527.7497.2448.8418.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low708.00.8475
Triple Number AP Medium546.11.0988
Triple Number AP High486.71.2327
Triple Number Windward/Leeward Low951.60.6305
Triple Number Windward/Leeward Medium669.20.8966
Triple Number Windward/Leeward High587.11.0219
Single Number Predominant Upwind623.40.9625
Single Number Predominant Reaching545.91.0991
Single Number Predominant Downwind575.41.0427
Predominant Upwind - Low871.40.6886
Predominant Upwind - Low/Med658.90.9106
Predominant Upwind - Medium578.61.0370
Predominant Upwind - Med/High538.41.1144
Predominant Upwind - High516.61.1614
Predominant Downwind Low839.00.7151
Predominant Downwind Low/Med622.40.9641
Predominant Downwind Medium534.81.1220
Predominant Downwind Med/High478.41.2541
Predominant Downwind High432.81.3864
Predominant Reaching Low757.30.7923
Predominant Reaching Low/Med578.61.0370
Predominant Reaching Medium512.11.1717
Predominant Reaching Med/High469.41.2781
Predominant Reaching High436.61.3741
SA/DSPL Upwind22.26SA/DSPL Downwind53.33
Scoring OptionTODTOT
5-Band Windward/Leeward Low1065.20.5633
5-Band Windward/Leeward Low/Med776.80.7724
5-Band Windward/Leeward Medium657.80.9121
5-Band Windward/Leeward Med/High596.11.0065
5-Band Windward/Leeward High558.51.0743
Windward/Leeward 60-40 Low1078.00.5566
Windward/Leeward 60-40 Low/Med789.10.7603
Windward/Leeward 60-40 Medium671.60.8934
Windward/Leeward 60-40 Med/High612.90.9789
Windward/Leeward 60-40 High580.21.0341
5-Band AP Low779.90.7694
5-Band AP Low/Med617.40.9718
5-Band AP Medium538.41.1143
5-Band AP Med/High494.01.2147
5-Band AP High465.21.2898
5-Band SF Bay Tour - Low919.50.6525
5-Band SF Bay Tour - Low/Med743.70.8068
5-Band SF Bay Tour - Medium634.20.9461
5-Band SF Bay Tour - Med/High576.71.0404
5-Band SF Bay Tour - High541.61.1078
Chicago-Mac Upwind0.9325
Chicago-Mac All Purpose0.9705
Chicago-Mac Downwind1.0050
Bayview-Mac Cove Island0.7077
Bayview-Mac Shore0.7118
Harvest Moon Regatta477.71.2559
Club Certificate2025
ATURARSA-3786
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-105Measurement04/11/2015HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.570Max. Beam3.344Draft2.022Displacement4,168Wetted area23.17IMS L9.669LSM09.483Acc. length10.570Sink (kg/mm) 17.30
VCGD0.100VCGM0.066RM Rated (kg·m) 90.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight638Declared crew weight580
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.380PBW0.100PIPA0.0035
PSD0.025PHD0.053PHL0.140
PSA16.2°ESL0.980
ST10.021ST20.185ST30.215
ST40.048ST50.175
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.590IG12.000ISP13.880MDT10.100MDL10.140MDT2MDL2TLTaperMWGO
E4.410J4.110BAS1.550FSD0.040SFJSPLWPLTPS5.800BD0.127MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered90.3Flotation Date03/08/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
ATURARSA-3786
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM-10.160.931.642.793.6332.6111/09/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ-AP0.100.651.212.183.114.0411.88YesNo 25.3011/09/2025
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2-116.1613.6714.928.648.15106%106.1711/09/2025White/Pink/Purple/Black
CRUISER/RACER REQUIREMENTS*
Accommodation length10.6 mTable area0.44 m²Headroom1.74 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity92 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity62 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.