Double HandedClub Certificate2025
AstraRSA-4763
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 Angles43.0°43.0°40.8°40.4°40.8°41.2°41.5°42.6°44.8°
Beat VMG1.942.673.223.503.593.633.653.633.50
52°3.024.054.775.175.335.415.455.485.40
60°3.204.274.995.405.595.665.725.775.75
75°3.324.435.195.645.865.976.046.146.17
90°3.224.365.195.705.996.176.306.466.56
110°2.854.004.955.626.016.286.536.927.12
120°2.653.764.715.445.916.226.497.017.42
135°2.263.294.235.005.606.006.296.877.46
150°1.912.853.744.525.195.706.056.627.22
Run VMG1.652.473.284.024.695.275.736.346.91
Gybe Angles153.8°153.8°160.0°171.2°172.6°173.9°179.9°177.1°176.7°
APH ToD:745.1CDL: 5.564APH ToT: 0.8053CertNo:ZAD011
BOAT
ClassTumlarenDesignerKnud H. ReimersBuilderUnknownAge date01/1934Series date01/1934Offset fileastra.offData fileRSA4763
HULL
Length Overall8.281 mMaximum Beam1.878 mDraft1.280 mDisplacement1,814 kgDLR6.2142IMS DivisionSportboatDynamic Allowance0.410%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail15.3715.68Headsail Luffed9.509.50Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail4.63Storm Jib2.44Heavy Weather Jib6.59
SAIL LIMITS
Headsails5Spinnakers0
✱ Spinnaker pole aboard
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
079 045 1318
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
AstraRSA-4763
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 VMG1856.21347.91118.81029.01001.6992.0986.8990.61029.9
52°1192.9887.8754.2696.0674.9665.9660.2656.5666.1
60°1123.5842.4720.9666.1644.5635.6629.5623.7626.5
75°1084.7811.8693.1638.4614.3602.5595.8586.5583.9
90°1119.7826.1694.3631.9601.2583.7571.8556.9548.6
110°1261.4899.4727.5640.9599.0572.9551.4520.0505.3
120°1358.0957.7764.3661.4609.1579.0554.5513.7485.3
135°1595.91095.6851.3719.4642.5600.3572.3523.8482.9
150°1881.41264.2961.4795.8693.7631.2594.9543.8498.4
Run VMG2176.91455.01098.0895.5768.1682.7628.0568.2521.4
Selected Courses
Windward / Leeward2011.81401.51108.4962.2884.8837.3807.4779.4775.6
All purpose1514.11076.0868.6767.0715.7686.5667.6644.8637.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward926.00.6480
All purpose745.10.8053
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.5625
Downwind "popa"0.6890
70% up, 30% down "Ilhabela"0.5953
30% up, 70% down "Ilhabela-inverso"0.6455
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Predominantly Upwind808.80.7419
Predominantly Downwind756.50.7931
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low972.30.6171
Triple Number AP Medium738.30.8127
Triple Number AP High663.80.9039
Triple Number Windward/Leeward Low1316.50.4558
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Single Number Predominant Upwind843.20.7116
Single Number Predominant Reaching740.30.8104
Single Number Predominant Downwind799.50.7505
Predominant Upwind - Low1151.30.5211
Predominant Upwind - Low/Med878.50.6830
Predominant Upwind - Medium783.20.7661
Predominant Upwind - Med/High742.10.8086
Predominant Upwind - High730.00.8219
Predominant Downwind Low1234.80.4859
Predominant Downwind Low/Med876.70.6844
Predominant Downwind Medium724.80.8279
Predominant Downwind Med/High637.90.9406
Predominant Downwind High597.01.0050
Predominant Reaching Low1058.60.5668
Predominant Reaching Low/Med788.60.7608
Predominant Reaching Medium683.10.8783
Predominant Reaching Med/High628.30.9549
Predominant Reaching High603.00.9950
SA/DSPL Upwind16.70SA/DSPL Downwind16.70
Scoring OptionTODTOT
5-Band Windward/Leeward Low1482.00.4049
5-Band Windward/Leeward Low/Med1067.00.5623
5-Band Windward/Leeward Medium901.80.6653
5-Band Windward/Leeward Med/High814.30.7369
5-Band Windward/Leeward High783.60.7657
Windward/Leeward 60-40 Low1469.10.4084
Windward/Leeward 60-40 Low/Med1074.30.5585
Windward/Leeward 60-40 Medium924.00.6493
Windward/Leeward 60-40 Med/High849.30.7064
Windward/Leeward 60-40 High826.20.7262
5-Band AP Low1095.30.5478
5-Band AP Low/Med840.70.7137
5-Band AP Medium728.00.8242
5-Band AP Med/High671.00.8942
5-Band AP High647.40.9267
5-Band SF Bay Tour - Low1266.50.4737
5-Band SF Bay Tour - Low/Med1021.80.5872
5-Band SF Bay Tour - Medium874.90.6858
5-Band SF Bay Tour - Med/High800.90.7492
5-Band SF Bay Tour - High774.60.7746
Chicago-Mac Upwind0.6919
Chicago-Mac All Purpose0.7103
Chicago-Mac Downwind0.7207
Bayview-Mac Cove Island0.5081
Bayview-Mac Shore0.5136
Harvest Moon Regatta630.20.9521
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance812.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.7381
Triple Number Coastal/Long Distance Low0.6171
Triple Number Coastal/Long Distance Medium0.8128
Triple Number Coastal/Long Distance High0.9039
Triple Number Windward/Leeward Low0.4781
Triple Number Windward/Leeward Medium0.6540
Triple Number Windward/Leeward High0.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
For information
General Purpose Handicap (GPH)839.4
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low972.3
Triple Number Coastal/Long Distance Medium738.2
Triple Number Coastal/Long Distance High663.8
Triple Number Windward/Leeward Low1255.0
Triple Number Windward/Leeward Medium917.4
Triple Number Windward/Leeward High804.4
Predominantly Upwind808.8
Predominantly Downwind756.5
Predominantly Reaching720.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6171
Triple Number Coastal/Long Distance Medium0.8128
Triple Number Coastal/Long Distance High0.9039
Triple Number Windward/Leeward Low0.4781
Triple Number Windward/Leeward Medium0.6540
Triple Number Windward/Leeward High0.7459
Coastal/Long Distance0.7381
Predominantly Upwind0.7419
Predominantly Downwind0.7931
For information
General Purpose Handicap (GPH)839.4
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8053
Distanseseilas Trippeltall svak vind0.6171
Distanseseilas Trippeltall mellomvind0.8128
Distanseseilas Trippeltall sterk vind0.9039
Pølsebane Trippeltall svak vind0.4781
Pølsebane Trippeltall mellomvind0.6540
Pølsebane Trippeltall sterk vind0.7459
Motvind Singeltall0.7419
Medvind Singeltall0.7931
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Coastal/Long Distance812.90.7381
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind808.80.7419
Predominantly Downwind756.50.7931
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore776.80.7724
Cape Doctor Coastal639.50.9382
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6171
Triple Number Coastal/Long Distance Medium0.8128
Triple Number Coastal/Long Distance High0.9039
Triple Number Windward/Leeward Low0.4781
Triple Number Windward/Leeward Medium0.6540
Triple Number Windward/Leeward High0.7459
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6171
Triple Number Coastal/Long Distance Medium0.8128
Triple Number Coastal/Long Distance High0.9039
Triple Number Windward/Leeward Low0.4781
Triple Number Windward/Leeward Medium0.6540
Triple Number Windward/Leeward High0.7459
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Predominantly Upwind808.80.7419
Predominantly Downwind756.50.7931
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance812.90.7381
Triple Number Coastal/Long Distance Low972.30.6171
Triple Number Coastal/Long Distance Medium738.20.8128
Triple Number Coastal/Long Distance High663.80.9039
Triple Number Windward/Leeward Low1255.00.4781
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2164.51406.81043.8866.1767.9713.5672.0606.0592.6
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low972.30.6171
Triple Number AP Medium738.30.8127
Triple Number AP High663.80.9039
Triple Number Windward/Leeward Low1316.50.4558
Triple Number Windward/Leeward Medium917.40.6540
Triple Number Windward/Leeward High804.40.7459
Single Number Predominant Upwind843.20.7116
Single Number Predominant Reaching740.30.8104
Single Number Predominant Downwind799.50.7505
Predominant Upwind - Low1151.30.5211
Predominant Upwind - Low/Med878.50.6830
Predominant Upwind - Medium783.20.7661
Predominant Upwind - Med/High742.10.8086
Predominant Upwind - High730.00.8219
Predominant Downwind Low1234.80.4859
Predominant Downwind Low/Med876.70.6844
Predominant Downwind Medium724.80.8279
Predominant Downwind Med/High637.90.9406
Predominant Downwind High597.01.0050
Predominant Reaching Low1058.60.5668
Predominant Reaching Low/Med788.60.7608
Predominant Reaching Medium683.10.8783
Predominant Reaching Med/High628.30.9549
Predominant Reaching High603.00.9950
SA/DSPL Upwind16.70SA/DSPL Downwind16.70
Scoring OptionTODTOT
5-Band Windward/Leeward Low1482.00.4049
5-Band Windward/Leeward Low/Med1067.00.5623
5-Band Windward/Leeward Medium901.80.6653
5-Band Windward/Leeward Med/High814.30.7369
5-Band Windward/Leeward High783.60.7657
Windward/Leeward 60-40 Low1469.10.4084
Windward/Leeward 60-40 Low/Med1074.30.5585
Windward/Leeward 60-40 Medium924.00.6493
Windward/Leeward 60-40 Med/High849.30.7064
Windward/Leeward 60-40 High826.20.7262
5-Band AP Low1095.30.5478
5-Band AP Low/Med840.70.7137
5-Band AP Medium728.00.8242
5-Band AP Med/High671.00.8942
5-Band AP High647.40.9267
5-Band SF Bay Tour - Low1266.50.4737
5-Band SF Bay Tour - Low/Med1021.80.5872
5-Band SF Bay Tour - Medium874.90.6858
5-Band SF Bay Tour - Med/High800.90.7492
5-Band SF Bay Tour - High774.60.7746
Chicago-Mac Upwind0.6919
Chicago-Mac All Purpose0.7103
Chicago-Mac Downwind0.7207
Bayview-Mac Cove Island0.5081
Bayview-Mac Shore0.5136
Harvest Moon Regatta630.20.9521
Double HandedClub Certificate2025
AstraRSA-4763
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassTumlarenMeasurement11/09/2022HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA8.281Max. Beam1.878Draft1.280Displacement1,814Wetted area13.33IMS L6.682LSM06.633Acc. length6.104Sink (kg/mm) 7.08
VCGD-0.215VCGM-0.206RM Rated (kg·m) 13.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionFixedInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders1Rotating mastNo
P8.610IG6.985ISP7.302MDT10.084MDL10.115MDT2MDL2TLTaperMWGO
E3.070J1.890BAS0.855FSDNo FoilSFJ1.745SPL2.035WPLTPSBD0.101MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date15/09/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
AstraRSA-4763
ORC
Central Rating Office
Issuing certificates for
SOUTH AFRICA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.160.621.101.882.5515.3711/09/2022
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.050.370.711.402.142.836.69NoNo 9.5011/09/2022