Double HandedClub Certificate2025
VulcanRSA-31013
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 Angles42.6°42.6°40.1°39.3°39.0°39.7°39.4°40.0°42.3°
Beat VMG3.094.054.614.864.995.095.165.134.87
52°4.796.136.817.097.257.387.477.497.28
60°5.076.457.127.397.597.747.857.837.74
75°5.196.667.457.858.138.368.528.688.72
90°5.046.537.458.168.618.979.269.689.95
110°5.096.597.478.068.589.3210.0411.0711.75
120°4.856.517.668.389.029.6310.2111.4012.55
135°4.195.897.288.389.5310.4411.2312.7414.27
150°3.424.926.237.248.319.5310.8613.9716.43
Run VMG2.964.265.406.277.208.269.4112.1014.89
Gybe Angles141.3°141.3°145.6°146.5°147.4°145.2°145.7°149.4°153.2°
APH ToD:501.7CDL: 8.850APH ToT: 1.1959CertNo:ZAD185
BOAT
ClassCape 31DesignerMillsBuilderNoordhoekAge date07/2017Series date07/2017Offset fileCAPE31.offData fileRSA31013
HULL
Length Overall9.573 mMaximum Beam3.054 mDraft2.446 mDisplacement1,875 kgDLR2.7224IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.260%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.381m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail36.6637.83Headsail Luffed23.4123.41Headsail FlyingSymmetricAsymmetric116.74116.74 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail9.88Storm Jib7.82Heavy Weather Jib21.10
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
hylton.hale@afrimat.co.za
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
VulcanRSA-31013
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 VMG1163.3889.5781.0741.4720.8706.9697.8701.9739.6
52°751.6587.6528.9508.0496.2487.7482.2480.8494.5
60°709.5558.1505.9487.3474.4465.0458.6460.0465.1
75°694.1540.4483.1458.4442.6430.7422.3414.8412.9
90°714.5551.0483.1440.9418.0401.5388.7371.8361.7
110°707.2546.2481.8446.8419.5386.1358.5325.2306.3
120°742.0552.8469.9429.4399.2374.0352.6315.8286.8
135°858.7611.6494.5429.6377.6344.8320.5282.6252.2
150°1053.0731.5577.7497.3433.1377.6331.4257.7219.1
Run VMG1215.9844.6667.0574.2500.1436.1382.7297.6241.7
Selected Courses
Windward / Leeward1185.0867.1724.0657.8610.5571.5540.2499.8490.7
All purpose896.2670.1571.9525.0492.1465.4444.4417.9410.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward623.80.9619
All purpose501.71.1959
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8016
Downwind "popa"1.1344
70% up, 30% down "Ilhabela"0.8790
30% up, 70% down "Ilhabela-inverso"1.0088
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Predominantly Upwind559.81.0718
Predominantly Downwind483.41.2413
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low621.00.9663
Triple Number AP Medium503.11.1927
Triple Number AP High439.71.3647
Triple Number Windward/Leeward Low828.30.7243
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Single Number Predominant Upwind575.41.0428
Single Number Predominant Reaching483.01.2422
Single Number Predominant Downwind501.11.1973
Predominant Upwind - Low735.10.8162
Predominant Upwind - Low/Med599.41.0010
Predominant Upwind - Medium547.61.0956
Predominant Upwind - Med/High514.31.1666
Predominant Upwind - High502.21.1947
Predominant Downwind Low733.00.8186
Predominant Downwind Low/Med553.81.0834
Predominant Downwind Medium469.21.2788
Predominant Downwind Med/High401.71.4935
Predominant Downwind High359.11.6708
Predominant Reaching Low655.20.9157
Predominant Reaching Low/Med517.51.1594
Predominant Reaching Medium456.61.3141
Predominant Reaching Med/High413.11.4524
Predominant Reaching High389.11.5421
SA/DSPL Upwind39.43SA/DSPL Downwind100.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low911.90.6579
5-Band Windward/Leeward Low/Med705.00.8511
5-Band Windward/Leeward Medium615.40.9750
5-Band Windward/Leeward Med/High544.61.1017
5-Band Windward/Leeward High505.21.1877
Windward/Leeward 60-40 Low915.70.6552
Windward/Leeward 60-40 Low/Med718.80.8347
Windward/Leeward 60-40 Medium637.30.9414
Windward/Leeward 60-40 Med/High576.11.0415
Windward/Leeward 60-40 High545.71.0995
5-Band AP Low672.70.8919
5-Band AP Low/Med558.01.0752
5-Band AP Medium495.71.2103
5-Band AP Med/High447.51.3409
5-Band AP High421.11.4247
5-Band SF Bay Tour - Low793.10.7565
5-Band SF Bay Tour - Low/Med675.00.8888
5-Band SF Bay Tour - Medium594.61.0091
5-Band SF Bay Tour - Med/High533.41.1249
5-Band SF Bay Tour - High501.41.1967
Chicago-Mac Upwind1.0145
Chicago-Mac All Purpose1.0795
Chicago-Mac Downwind1.1446
Bayview-Mac Cove Island0.8133
Bayview-Mac Shore0.8192
Harvest Moon Regatta412.41.4548
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance546.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating546.81.0972
FinRating, kevyt tuuli892.51.1205
FinRating, kova tuuli423.01.1820
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0972
Triple Number Coastal/Long Distance Low0.9663
Triple Number Coastal/Long Distance Medium1.1928
Triple Number Coastal/Long Distance High1.3647
Triple Number Windward/Leeward Low0.7542
Triple Number Windward/Leeward Medium0.9585
Triple Number Windward/Leeward High1.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
For information
General Purpose Handicap (GPH)557.8
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low620.9
Triple Number Coastal/Long Distance Medium503.0
Triple Number Coastal/Long Distance High439.7
Triple Number Windward/Leeward Low795.5
Triple Number Windward/Leeward Medium626.0
Triple Number Windward/Leeward High532.9
Predominantly Upwind559.8
Predominantly Downwind483.4
Predominantly Reaching469.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9663
Triple Number Coastal/Long Distance Medium1.1928
Triple Number Coastal/Long Distance High1.3647
Triple Number Windward/Leeward Low0.7542
Triple Number Windward/Leeward Medium0.9585
Triple Number Windward/Leeward High1.1260
Coastal/Long Distance1.0972
Predominantly Upwind1.0718
Predominantly Downwind1.2413
For information
General Purpose Handicap (GPH)557.8
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1959
Distanseseilas Trippeltall svak vind0.9663
Distanseseilas Trippeltall mellomvind1.1928
Distanseseilas Trippeltall sterk vind1.3647
Pølsebane Trippeltall svak vind0.7542
Pølsebane Trippeltall mellomvind0.9585
Pølsebane Trippeltall sterk vind1.1260
Motvind Singeltall1.0718
Medvind Singeltall1.2413
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Coastal/Long Distance546.81.0972
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind559.81.0718
Predominantly Downwind483.41.2413
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore493.41.2161
Cape Doctor Coastal412.61.4542
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9663
Triple Number Coastal/Long Distance Medium1.1928
Triple Number Coastal/Long Distance High1.3647
Triple Number Windward/Leeward Low0.7542
Triple Number Windward/Leeward Medium0.9585
Triple Number Windward/Leeward High1.1260
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9663
Triple Number Coastal/Long Distance Medium1.1928
Triple Number Coastal/Long Distance High1.3647
Triple Number Windward/Leeward Low0.7542
Triple Number Windward/Leeward Medium0.9585
Triple Number Windward/Leeward High1.1260
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Predominantly Upwind559.81.0718
Predominantly Downwind483.41.2413
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance546.81.0972
Triple Number Coastal/Long Distance Low620.90.9663
Triple Number Coastal/Long Distance Medium503.01.1928
Triple Number Coastal/Long Distance High439.71.3647
Triple Number Windward/Leeward Low795.50.7542
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.8864.8681.1591.9529.1484.9448.1394.0380.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low621.00.9663
Triple Number AP Medium503.11.1927
Triple Number AP High439.71.3647
Triple Number Windward/Leeward Low828.30.7243
Triple Number Windward/Leeward Medium626.00.9585
Triple Number Windward/Leeward High532.91.1260
Single Number Predominant Upwind575.41.0428
Single Number Predominant Reaching483.01.2422
Single Number Predominant Downwind501.11.1973
Predominant Upwind - Low735.10.8162
Predominant Upwind - Low/Med599.41.0010
Predominant Upwind - Medium547.61.0956
Predominant Upwind - Med/High514.31.1666
Predominant Upwind - High502.21.1947
Predominant Downwind Low733.00.8186
Predominant Downwind Low/Med553.81.0834
Predominant Downwind Medium469.21.2788
Predominant Downwind Med/High401.71.4935
Predominant Downwind High359.11.6708
Predominant Reaching Low655.20.9157
Predominant Reaching Low/Med517.51.1594
Predominant Reaching Medium456.61.3141
Predominant Reaching Med/High413.11.4524
Predominant Reaching High389.11.5421
SA/DSPL Upwind39.43SA/DSPL Downwind100.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low911.90.6579
5-Band Windward/Leeward Low/Med705.00.8511
5-Band Windward/Leeward Medium615.40.9750
5-Band Windward/Leeward Med/High544.61.1017
5-Band Windward/Leeward High505.21.1877
Windward/Leeward 60-40 Low915.70.6552
Windward/Leeward 60-40 Low/Med718.80.8347
Windward/Leeward 60-40 Medium637.30.9414
Windward/Leeward 60-40 Med/High576.11.0415
Windward/Leeward 60-40 High545.71.0995
5-Band AP Low672.70.8919
5-Band AP Low/Med558.01.0752
5-Band AP Medium495.71.2103
5-Band AP Med/High447.51.3409
5-Band AP High421.11.4247
5-Band SF Bay Tour - Low793.10.7565
5-Band SF Bay Tour - Low/Med675.00.8888
5-Band SF Bay Tour - Medium594.61.0091
5-Band SF Bay Tour - Med/High533.41.1249
5-Band SF Bay Tour - High501.41.1967
Chicago-Mac Upwind1.0145
Chicago-Mac All Purpose1.0795
Chicago-Mac Downwind1.1446
Bayview-Mac Cove Island0.8133
Bayview-Mac Shore0.8192
Harvest Moon Regatta412.41.4548
Double HandedClub Certificate2025
VulcanRSA-31013
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassCape 31Measurement26/07/2017HINPlan reviewHull constructionCoredCarbon rudderYesLight stanchionsYesTrim tabNo
LOA9.573Max. Beam3.054Draft2.446Displacement1,875Wetted area18.24IMS L9.118LSM08.830Acc. length9.573Sink (kg/mm) 14.57
VCGD-0.228VCGM-0.230RM Rated (kg·m) 71.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.381PBW0.100PIPA0.0033
EDL1.100ST10.055ST20.180
ST30.220ST40.100ST50.275
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P12.540IG12.500ISP13.700MDT10.106MDL10.200MDT20.075MDL20.140TL1.360MWGO
E4.500J3.600BAS1.200FSD0.034SFJ0.330SPL0.000WPLTPS5.945BD0.150MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date10/04/2025
W150.8W250.8W350.8W450.8
PD1531.7PD2528.7PD3528.0PD4530.3
WD9.550PLM9000.00GSA1.0RSA1.0RM72.1
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
VulcanRSA-31013
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment311.111.512.123.033.7936.6604/12/2017
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentNo20.100.561.031.902.773.6612.40YesNo 23.4102/12/2017Black string
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment3115.7013.7014.709.479.7797%116.7404/12/2017