Double HandedClub Certificate2025
AFRICAN SKIMMERRSA-4177
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°41.4°40.1°39.5°39.3°39.3°39.5°40.8°
Beat VMG2.403.404.244.775.015.135.215.255.13
52°3.735.176.307.007.297.437.527.607.56
60°3.975.446.567.267.567.707.797.887.88
75°4.125.626.737.447.818.028.168.348.42
90°4.095.696.917.507.868.198.468.829.05
110°4.175.837.137.878.328.618.869.319.51
120°4.045.676.987.798.338.849.249.8410.40
135°3.525.036.357.357.988.529.0810.4111.89
150°2.894.205.416.467.317.878.349.3410.75
Run VMG2.513.644.685.606.336.867.298.119.31
Gybe Angles141.7°141.7°145.1°148.0°150.3°153.4°157.9°156.1°143.2°
APH ToD:540.9CDL: 9.847APH ToT: 1.1093CertNo:ZAD287
BOAT
ClassDIDI 40DesignerDUDLEY DIXBuilderB SWARTAge date01/2009Series date01/2009Offset filedidi40DV.offData fileRSA-4177
HULL
Length Overall12.070 mMaximum Beam3.398 mDraft2.367 mDisplacement6,190 kgDLR4.5667IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.417m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail39.6340.25Headsail Luffed33.3033.30Headsail FlyingSymmetricAsymmetric104.68104.67 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail11.90Storm Jib10.12Heavy Weather Jib27.30
SAIL LIMITS
Headsails6Spinnakers5
✱ Asymmetric SHALL NOT be tacked on the pole
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.
Double HandedClub Certificate2025
AFRICAN SKIMMERRSA-4177
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 VMG1497.51057.8849.9754.2718.4701.4691.6685.8701.7
52°964.6696.1571.5514.3493.6484.3478.7473.8476.0
60°907.8661.6548.6495.7475.9467.6462.3456.9457.1
75°874.0640.9534.6483.6460.8448.6441.3431.4427.8
90°880.4632.6521.2480.1457.8439.4425.7408.0398.0
110°863.4617.9505.2457.5432.8418.2406.1386.6378.4
120°891.3634.7515.4462.1432.1407.2389.7365.9346.1
135°1022.3715.3566.7489.7451.3422.7396.3345.7302.7
150°1244.7856.8665.7557.1492.6457.2431.8385.6334.8
Run VMG1437.1989.4768.7643.3568.7525.1493.6443.9386.6
Selected Courses
Windward / Leeward1467.01023.6809.3698.7643.5613.2592.6564.9544.1
All purpose1111.3786.0631.5556.3520.0498.8483.4461.3446.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward675.10.8888
All purpose540.91.1093
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7694
Downwind "popa"0.9475
70% up, 30% down "Ilhabela"0.8154
30% up, 70% down "Ilhabela-inverso"0.8860
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Predominantly Upwind590.21.0166
Predominantly Downwind545.91.0991
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low708.70.8466
Triple Number AP Medium536.21.1190
Triple Number AP High479.01.2527
Triple Number Windward/Leeward Low960.50.6247
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Single Number Predominant Upwind617.90.9711
Single Number Predominant Reaching537.91.1154
Single Number Predominant Downwind572.51.0480
Predominant Upwind - Low872.70.6875
Predominant Upwind - Low/Med649.70.9236
Predominant Upwind - Medium570.11.0525
Predominant Upwind - Med/High533.01.1256
Predominant Upwind - High517.21.1602
Predominant Downwind Low861.20.6967
Predominant Downwind Low/Med622.50.9638
Predominant Downwind Medium525.21.1423
Predominant Downwind Med/High466.51.2863
Predominant Downwind High428.41.4004
Predominant Reaching Low769.50.7798
Predominant Reaching Low/Med572.51.0480
Predominant Reaching Medium498.61.2033
Predominant Reaching Med/High455.41.3175
Predominant Reaching High428.81.3993
SA/DSPL Upwind21.50SA/DSPL Downwind42.55
Scoring OptionTODTOT
5-Band Windward/Leeward Low1080.90.5551
5-Band Windward/Leeward Low/Med777.40.7718
5-Band Windward/Leeward Medium657.10.9130
5-Band Windward/Leeward Med/High595.71.0072
5-Band Windward/Leeward High566.11.0599
Windward/Leeward 60-40 Low1087.90.5515
Windward/Leeward 60-40 Low/Med787.40.7620
Windward/Leeward 60-40 Medium671.70.8932
Windward/Leeward 60-40 Med/High615.50.9749
Windward/Leeward 60-40 High590.81.0156
5-Band AP Low790.90.7586
5-Band AP Low/Med611.30.9816
5-Band AP Medium528.71.1349
5-Band AP Med/High485.31.2362
5-Band AP High462.61.2970
5-Band SF Bay Tour - Low925.60.6482
5-Band SF Bay Tour - Low/Med742.10.8085
5-Band SF Bay Tour - Medium632.30.9489
5-Band SF Bay Tour - Med/High576.81.0402
5-Band SF Bay Tour - High549.71.0915
Chicago-Mac Upwind0.9415
Chicago-Mac All Purpose0.9771
Chicago-Mac Downwind1.0078
Bayview-Mac Cove Island0.6993
Bayview-Mac Shore0.7041
Harvest Moon Regatta461.71.2994
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance590.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating590.01.0169
FinRating, kevyt tuuli1063.10.9407
FinRating, kova tuuli464.71.0760
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0169
Triple Number Coastal/Long Distance Low0.8466
Triple Number Coastal/Long Distance Medium1.1192
Triple Number Coastal/Long Distance High1.2527
Triple Number Windward/Leeward Low0.6547
Triple Number Windward/Leeward Medium0.8980
Triple Number Windward/Leeward High1.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
For information
General Purpose Handicap (GPH)610.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low708.7
Triple Number Coastal/Long Distance Medium536.1
Triple Number Coastal/Long Distance High479.0
Triple Number Windward/Leeward Low916.5
Triple Number Windward/Leeward Medium668.2
Triple Number Windward/Leeward High587.4
Predominantly Upwind590.2
Predominantly Downwind545.9
Predominantly Reaching522.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8466
Triple Number Coastal/Long Distance Medium1.1192
Triple Number Coastal/Long Distance High1.2527
Triple Number Windward/Leeward Low0.6547
Triple Number Windward/Leeward Medium0.8980
Triple Number Windward/Leeward High1.0215
Coastal/Long Distance1.0169
Predominantly Upwind1.0166
Predominantly Downwind1.0991
For information
General Purpose Handicap (GPH)610.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1093
Distanseseilas Trippeltall svak vind0.8466
Distanseseilas Trippeltall mellomvind1.1192
Distanseseilas Trippeltall sterk vind1.2527
Pølsebane Trippeltall svak vind0.6547
Pølsebane Trippeltall mellomvind0.8980
Pølsebane Trippeltall sterk vind1.0215
Motvind Singeltall1.0166
Medvind Singeltall1.0991
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Coastal/Long Distance590.01.0169
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind590.21.0166
Predominantly Downwind545.91.0991
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore550.41.0902
Cape Doctor Coastal451.11.3300
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8466
Triple Number Coastal/Long Distance Medium1.1192
Triple Number Coastal/Long Distance High1.2527
Triple Number Windward/Leeward Low0.6547
Triple Number Windward/Leeward Medium0.8980
Triple Number Windward/Leeward High1.0215
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8466
Triple Number Coastal/Long Distance Medium1.1192
Triple Number Coastal/Long Distance High1.2527
Triple Number Windward/Leeward Low0.6547
Triple Number Windward/Leeward Medium0.8980
Triple Number Windward/Leeward High1.0215
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Predominantly Upwind590.21.0166
Predominantly Downwind545.91.0991
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance590.01.0169
Triple Number Coastal/Long Distance Low708.70.8466
Triple Number Coastal/Long Distance Medium536.11.1192
Triple Number Coastal/Long Distance High479.01.2527
Triple Number Windward/Leeward Low916.50.6547
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1558.61020.2759.9628.3556.7517.6486.7438.8422.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low708.70.8466
Triple Number AP Medium536.21.1190
Triple Number AP High479.01.2527
Triple Number Windward/Leeward Low960.50.6247
Triple Number Windward/Leeward Medium668.20.8980
Triple Number Windward/Leeward High587.41.0215
Single Number Predominant Upwind617.90.9711
Single Number Predominant Reaching537.91.1154
Single Number Predominant Downwind572.51.0480
Predominant Upwind - Low872.70.6875
Predominant Upwind - Low/Med649.70.9236
Predominant Upwind - Medium570.11.0525
Predominant Upwind - Med/High533.01.1256
Predominant Upwind - High517.21.1602
Predominant Downwind Low861.20.6967
Predominant Downwind Low/Med622.50.9638
Predominant Downwind Medium525.21.1423
Predominant Downwind Med/High466.51.2863
Predominant Downwind High428.41.4004
Predominant Reaching Low769.50.7798
Predominant Reaching Low/Med572.51.0480
Predominant Reaching Medium498.61.2033
Predominant Reaching Med/High455.41.3175
Predominant Reaching High428.81.3993
SA/DSPL Upwind21.50SA/DSPL Downwind42.55
Scoring OptionTODTOT
5-Band Windward/Leeward Low1080.90.5551
5-Band Windward/Leeward Low/Med777.40.7718
5-Band Windward/Leeward Medium657.10.9130
5-Band Windward/Leeward Med/High595.71.0072
5-Band Windward/Leeward High566.11.0599
Windward/Leeward 60-40 Low1087.90.5515
Windward/Leeward 60-40 Low/Med787.40.7620
Windward/Leeward 60-40 Medium671.70.8932
Windward/Leeward 60-40 Med/High615.50.9749
Windward/Leeward 60-40 High590.81.0156
5-Band AP Low790.90.7586
5-Band AP Low/Med611.30.9816
5-Band AP Medium528.71.1349
5-Band AP Med/High485.31.2362
5-Band AP High462.61.2970
5-Band SF Bay Tour - Low925.60.6482
5-Band SF Bay Tour - Low/Med742.10.8085
5-Band SF Bay Tour - Medium632.30.9489
5-Band SF Bay Tour - Med/High576.81.0402
5-Band SF Bay Tour - High549.71.0915
Chicago-Mac Upwind0.9415
Chicago-Mac All Purpose0.9771
Chicago-Mac Downwind1.0078
Bayview-Mac Cove Island0.6993
Bayview-Mac Shore0.7041
Harvest Moon Regatta461.71.2994
Double HandedClub Certificate2025
AFRICAN SKIMMERRSA-4177
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDIDI 40Measurement26/06/2025HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.070Max. Beam3.398Draft2.367Displacement6,190Wetted area32.76IMS L11.052LSM011.066Acc. length11.043Sink (kg/mm) 21.97
VCGD-0.072VCGM-0.140RM Rated (kg·m) 154.4Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.417PBW0.133PIPA0.0040
PSD0.025PHD0.070PHL0.101
PSAESL1.020
ST10.017ST20.110ST30.105
ST40.060ST50.165
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.220IG14.220ISP15.760MDT10.115MDL10.198MDT2MDL2TLTaperMW0.198GO0.198
E4.780J4.080BAS1.660FSDNo FoilSFJ0.000SPL4.274WPLTPS4.680BD0.198MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date03/07/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
AFRICAN SKIMMERRSA-4177
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM10.351.031.742.933.9239.63
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ10.060.671.292.423.454.3814.30YesNo 33.30J20.060.531.022.063.164.2414.00YesNo 29.38
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA217.0014.8015.907.907.90100%104.68