Club 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 Angles42.3°42.3°39.9°37.8°37.4°37.0°36.6°36.6°37.4°
Beat VMG2.843.954.795.205.395.515.595.675.60
52°4.445.966.967.417.637.817.948.138.10
60°4.776.257.177.707.998.208.368.588.61
75°5.006.447.308.008.528.839.099.439.62
90°4.796.297.237.948.739.399.8110.4810.94
110°4.886.507.628.429.019.5810.1211.5812.76
120°4.776.397.588.629.4610.1510.8212.1013.32
135°3.995.697.108.089.2210.5111.7713.6515.56
150°3.314.766.037.068.009.0010.1813.3416.81
Run VMG2.874.125.226.116.937.798.8111.5514.56
Gybe Angles141.7°141.7°145.3°148.7°150.1°145.7°144.5°144.5°149.3°
APH ToD:489.8CDL: 9.693APH ToT: 1.2250CertNo:ZAC185
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 weight595 kg(declared)Minimum weight465 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail36.6637.77Headsail 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
Headsails6Spinnakers5
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.
Club 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 VMG1266.2911.6751.9692.7667.8653.9644.2634.6642.4
52°810.2604.4517.2486.2471.6461.2453.1443.0444.4
60°755.0576.2502.4467.6450.7439.2430.4419.5418.1
75°720.4559.0493.4449.9422.4407.9396.2381.8374.1
90°751.3572.8497.8453.5412.3383.4366.8343.6329.2
110°737.6553.5472.2427.6399.4375.7355.6310.9282.2
120°754.6563.3474.8417.4380.6354.6332.7297.6270.3
135°901.8632.8506.9445.6390.4342.6305.8263.7231.3
150°1086.4756.9597.2510.2449.9400.2353.7269.8214.2
Run VMG1254.5873.9689.6589.2519.3462.1408.4311.6247.3
Selected Courses
Windward / Leeward1260.0892.8720.8640.9593.6558.0526.3473.1444.8
All purpose947.6689.7571.5514.1477.2449.7427.1391.1371.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward610.80.9822
All purpose489.81.2250
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8473
Downwind "popa"1.0898
70% up, 30% down "Ilhabela"0.9079
30% up, 70% down "Ilhabela-inverso"1.0036
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Predominantly Upwind539.91.1113
Predominantly Downwind486.01.2345
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low630.60.9515
Triple Number AP Medium490.51.2232
Triple Number AP High419.21.4312
Triple Number Windward/Leeward Low844.10.7108
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Single Number Predominant Upwind559.01.0734
Single Number Predominant Reaching479.31.2518
Single Number Predominant Downwind504.91.1885
Predominant Upwind - Low760.10.7894
Predominant Upwind - Low/Med589.81.0173
Predominant Upwind - Medium525.31.1421
Predominant Upwind - Med/High483.91.2400
Predominant Upwind - High461.71.2996
Predominant Downwind Low759.10.7905
Predominant Downwind Low/Med563.31.0652
Predominant Downwind Medium471.31.2731
Predominant Downwind Med/High394.61.5207
Predominant Downwind High343.51.7470
Predominant Reaching Low679.50.8830
Predominant Reaching Low/Med523.01.1472
Predominant Reaching Medium450.61.3315
Predominant Reaching Med/High394.11.5224
Predominant Reaching High361.91.6578
SA/DSPL Upwind39.43SA/DSPL Downwind100.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low941.70.6372
5-Band Windward/Leeward Low/Med699.20.8582
5-Band Windward/Leeward Medium600.40.9993
5-Band Windward/Leeward Med/High528.41.1356
5-Band Windward/Leeward High477.41.2568
Windward/Leeward 60-40 Low945.40.6347
Windward/Leeward 60-40 Low/Med707.80.8477
Windward/Leeward 60-40 Medium615.30.9752
Windward/Leeward 60-40 Med/High551.91.0871
Windward/Leeward 60-40 High509.41.1778
5-Band AP Low693.80.8649
5-Band AP Low/Med554.81.0815
5-Band AP Medium482.41.2438
5-Band AP Med/High429.01.3985
5-Band AP High394.01.5228
5-Band SF Bay Tour - Low810.30.7405
5-Band SF Bay Tour - Low/Med667.30.8991
5-Band SF Bay Tour - Medium576.71.0403
5-Band SF Bay Tour - Med/High512.21.1714
5-Band SF Bay Tour - High469.11.2791
Chicago-Mac Upwind1.0397
Chicago-Mac All Purpose1.0872
Chicago-Mac Downwind1.1317
Bayview-Mac Cove Island0.7947
Bayview-Mac Shore0.8001
Harvest Moon Regatta404.61.4831
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance533.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating533.51.1247
FinRating, kevyt tuuli925.11.0810
FinRating, kova tuuli394.81.2665
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.1247
Triple Number Coastal/Long Distance Low0.9515
Triple Number Coastal/Long Distance Medium1.2233
Triple Number Coastal/Long Distance High1.4312
Triple Number Windward/Leeward Low0.7437
Triple Number Windward/Leeward Medium0.9819
Triple Number Windward/Leeward High1.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
For information
General Purpose Handicap (GPH)550.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low630.6
Triple Number Coastal/Long Distance Medium490.5
Triple Number Coastal/Long Distance High419.2
Triple Number Windward/Leeward Low806.8
Triple Number Windward/Leeward Medium611.1
Triple Number Windward/Leeward High514.3
Predominantly Upwind539.9
Predominantly Downwind486.0
Predominantly Reaching467.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9515
Triple Number Coastal/Long Distance Medium1.2233
Triple Number Coastal/Long Distance High1.4312
Triple Number Windward/Leeward Low0.7437
Triple Number Windward/Leeward Medium0.9819
Triple Number Windward/Leeward High1.1667
Coastal/Long Distance1.1247
Predominantly Upwind1.1113
Predominantly Downwind1.2345
For information
General Purpose Handicap (GPH)550.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.2250
Distanseseilas Trippeltall svak vind0.9515
Distanseseilas Trippeltall mellomvind1.2233
Distanseseilas Trippeltall sterk vind1.4312
Pølsebane Trippeltall svak vind0.7437
Pølsebane Trippeltall mellomvind0.9819
Pølsebane Trippeltall sterk vind1.1667
Motvind Singeltall1.1113
Medvind Singeltall1.2345
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Coastal/Long Distance533.51.1247
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind539.91.1113
Predominantly Downwind486.01.2345
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore453.31.3236
Cape Doctor Coastal377.61.5890
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9515
Triple Number Coastal/Long Distance Medium1.2233
Triple Number Coastal/Long Distance High1.4312
Triple Number Windward/Leeward Low0.7437
Triple Number Windward/Leeward Medium0.9819
Triple Number Windward/Leeward High1.1667
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9515
Triple Number Coastal/Long Distance Medium1.2233
Triple Number Coastal/Long Distance High1.4312
Triple Number Windward/Leeward Low0.7437
Triple Number Windward/Leeward Medium0.9819
Triple Number Windward/Leeward High1.1667
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Predominantly Upwind539.91.1113
Predominantly Downwind486.01.2345
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance533.51.1247
Triple Number Coastal/Long Distance Low630.60.9515
Triple Number Coastal/Long Distance Medium490.51.2233
Triple Number Coastal/Long Distance High419.21.4312
Triple Number Windward/Leeward Low806.80.7437
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1331.6890.9680.2578.0511.6468.1430.4369.6348.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low630.60.9515
Triple Number AP Medium490.51.2232
Triple Number AP High419.21.4312
Triple Number Windward/Leeward Low844.10.7108
Triple Number Windward/Leeward Medium611.10.9819
Triple Number Windward/Leeward High514.31.1667
Single Number Predominant Upwind559.01.0734
Single Number Predominant Reaching479.31.2518
Single Number Predominant Downwind504.91.1885
Predominant Upwind - Low760.10.7894
Predominant Upwind - Low/Med589.81.0173
Predominant Upwind - Medium525.31.1421
Predominant Upwind - Med/High483.91.2400
Predominant Upwind - High461.71.2996
Predominant Downwind Low759.10.7905
Predominant Downwind Low/Med563.31.0652
Predominant Downwind Medium471.31.2731
Predominant Downwind Med/High394.61.5207
Predominant Downwind High343.51.7470
Predominant Reaching Low679.50.8830
Predominant Reaching Low/Med523.01.1472
Predominant Reaching Medium450.61.3315
Predominant Reaching Med/High394.11.5224
Predominant Reaching High361.91.6578
SA/DSPL Upwind39.43SA/DSPL Downwind100.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low941.70.6372
5-Band Windward/Leeward Low/Med699.20.8582
5-Band Windward/Leeward Medium600.40.9993
5-Band Windward/Leeward Med/High528.41.1356
5-Band Windward/Leeward High477.41.2568
Windward/Leeward 60-40 Low945.40.6347
Windward/Leeward 60-40 Low/Med707.80.8477
Windward/Leeward 60-40 Medium615.30.9752
Windward/Leeward 60-40 Med/High551.91.0871
Windward/Leeward 60-40 High509.41.1778
5-Band AP Low693.80.8649
5-Band AP Low/Med554.81.0815
5-Band AP Medium482.41.2438
5-Band AP Med/High429.01.3985
5-Band AP High394.01.5228
5-Band SF Bay Tour - Low810.30.7405
5-Band SF Bay Tour - Low/Med667.30.8991
5-Band SF Bay Tour - Medium576.71.0403
5-Band SF Bay Tour - Med/High512.21.1714
5-Band SF Bay Tour - High469.11.2791
Chicago-Mac Upwind1.0397
Chicago-Mac All Purpose1.0872
Chicago-Mac Downwind1.1317
Bayview-Mac Cove Island0.7947
Bayview-Mac Shore0.8001
Harvest Moon Regatta404.61.4831
Club 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 L9.386LSM08.830Acc. length9.573Sink (kg/mm) 14.57
VCGD-0.228VCGM-0.230RM Rated (kg·m) 71.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight576Declared crew weight595
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
Club 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