Club Certificate2025
BLACK VELVETIRL 3471
ORC
Central Rating Office
Issuing certificates for
Ireland
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 Angles43.6°43.6°41.3°39.7°38.3°37.8°38.0°38.4°39.7°
Beat VMG2.403.314.044.564.885.025.085.115.03
52°3.755.065.996.576.897.047.127.187.17
60°3.995.336.246.757.057.227.327.417.42
75°4.145.516.416.897.207.437.607.797.88
90°4.295.746.717.167.387.547.728.118.34
110°4.405.896.887.387.778.088.298.689.03
120°4.265.756.787.327.758.168.559.179.76
135°3.715.186.337.027.477.908.359.4511.66
150°3.094.375.496.407.007.387.748.5010.01
Run VMG2.683.794.755.556.106.526.877.498.67
Gybe Angles143.5°143.5°147.8°150.2°153.4°158.8°162.4°161.9°140.7°
APH ToD:565.2CDL: 8.668APH ToT: 1.0616CertNo:
BOAT
ClassFirst 34.7DesignerFarrBuilderBeneteauAge date05/2006Series date10/2005Offset fileFIRST347.offData fileIRL3471
HULL
Length Overall9.982 mMaximum Beam3.372 mDraft1.990 mDisplacement4,594 kgDLR6.6248IMS DivisionCruiser/RacerDynamic Allowance0.210%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.410m
CREW
Maximum weight595 kg(declared)Minimum weight465 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.6034.14Headsail Luffed24.8024.80Headsail FlyingSymmetricAsymmetric99.9899.98 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail10.14Storm Jib8.62Heavy Weather Jib23.28
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
BLACK VELVETIRL 3471
ORC
Central Rating Office
Issuing certificates for
Ireland
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 VMG1503.01087.3891.8788.7737.2717.5708.1703.8715.8
52°959.3711.2600.7547.9522.6511.1505.9501.1501.8
60°901.3674.8577.0533.1510.5498.3492.1485.9485.1
75°869.1653.5561.9522.2500.3484.6473.5462.0456.8
90°839.2626.8536.4502.5487.9477.1466.3443.8431.4
110°818.6611.7523.5487.7463.4445.4434.0414.8398.5
120°845.8626.0530.6492.0464.6441.3421.1392.5368.7
135°969.1695.5569.1512.8482.2455.8431.4381.0308.8
150°1165.0823.0656.1562.3514.3487.6465.3423.7359.5
Run VMG1345.7950.3757.6649.1589.8552.5524.1480.8415.1
Selected Courses
Windward / Leeward1424.11018.8824.7718.9663.5635.0616.1592.3565.5
All purpose1078.1784.4648.8581.7546.4525.8511.3489.9468.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward694.50.8640
All purpose565.21.0616
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7454
Downwind "popa"0.9325
70% up, 30% down "Ilhabela"0.7932
30% up, 70% down "Ilhabela-inverso"0.8672
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Predominantly Upwind615.30.9751
Predominantly Downwind567.51.0572
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low716.60.8373
Triple Number AP Medium561.61.0683
Triple Number AP High506.91.1836
Triple Number Windward/Leeward Low961.40.6241
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Single Number Predominant Upwind640.40.9368
Single Number Predominant Reaching559.51.0725
Single Number Predominant Downwind589.91.0171
Predominant Upwind - Low878.30.6832
Predominant Upwind - Low/Med673.60.8907
Predominant Upwind - Medium596.31.0062
Predominant Upwind - Med/High559.71.0721
Predominant Upwind - High543.31.1044
Predominant Downwind Low841.30.7132
Predominant Downwind Low/Med633.10.9477
Predominant Downwind Medium549.91.0911
Predominant Downwind Med/High497.91.2050
Predominant Downwind High459.51.3059
Predominant Reaching Low760.50.7890
Predominant Reaching Low/Med589.41.0180
Predominant Reaching Medium526.31.1401
Predominant Reaching Med/High488.31.2288
Predominant Reaching High460.01.3044
SA/DSPL Upwind21.03SA/DSPL Downwind48.09
Scoring OptionTODTOT
5-Band Windward/Leeward Low1071.70.5599
5-Band Windward/Leeward Low/Med792.20.7574
5-Band Windward/Leeward Medium677.40.8857
5-Band Windward/Leeward Med/High619.20.9689
5-Band Windward/Leeward High591.81.0139
Windward/Leeward 60-40 Low1085.80.5526
Windward/Leeward 60-40 Low/Med806.00.7444
Windward/Leeward 60-40 Medium692.50.8664
Windward/Leeward 60-40 Med/High637.70.9409
Windward/Leeward 60-40 High614.80.9760
5-Band AP Low783.50.7658
5-Band AP Low/Med630.00.9524
5-Band AP Medium554.41.0822
5-Band AP Med/High513.11.1693
5-Band AP High489.91.2248
5-Band SF Bay Tour - Low928.80.6460
5-Band SF Bay Tour - Low/Med759.40.7900
5-Band SF Bay Tour - Medium654.20.9172
5-Band SF Bay Tour - Med/High600.90.9984
5-Band SF Bay Tour - High574.81.0438
Chicago-Mac Upwind0.9090
Chicago-Mac All Purpose0.9480
Chicago-Mac Downwind0.9833
Bayview-Mac Cove Island0.7010
Bayview-Mac Shore0.7051
Harvest Moon Regatta493.01.2171
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance613.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating613.70.9777
FinRating, kevyt tuuli1048.50.9537
FinRating, kova tuuli492.41.0155
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9777
Triple Number Coastal/Long Distance Low0.8373
Triple Number Coastal/Long Distance Medium1.0684
Triple Number Coastal/Long Distance High1.1836
Triple Number Windward/Leeward Low0.6509
Triple Number Windward/Leeward Medium0.8717
Triple Number Windward/Leeward High0.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
For information
General Purpose Handicap (GPH)632.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low716.6
Triple Number Coastal/Long Distance Medium561.6
Triple Number Coastal/Long Distance High506.9
Triple Number Windward/Leeward Low921.8
Triple Number Windward/Leeward Medium688.3
Triple Number Windward/Leeward High611.9
Predominantly Upwind615.3
Predominantly Downwind567.5
Predominantly Reaching546.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8373
Triple Number Coastal/Long Distance Medium1.0684
Triple Number Coastal/Long Distance High1.1836
Triple Number Windward/Leeward Low0.6509
Triple Number Windward/Leeward Medium0.8717
Triple Number Windward/Leeward High0.9806
Coastal/Long Distance0.9777
Predominantly Upwind0.9751
Predominantly Downwind1.0572
For information
General Purpose Handicap (GPH)632.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0616
Distanseseilas Trippeltall svak vind0.8373
Distanseseilas Trippeltall mellomvind1.0684
Distanseseilas Trippeltall sterk vind1.1836
Pølsebane Trippeltall svak vind0.6509
Pølsebane Trippeltall mellomvind0.8717
Pølsebane Trippeltall sterk vind0.9806
Motvind Singeltall0.9751
Medvind Singeltall1.0572
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Coastal/Long Distance613.70.9777
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind615.30.9751
Predominantly Downwind567.51.0572
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore573.51.0461
Cape Doctor Coastal474.81.2638
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8373
Triple Number Coastal/Long Distance Medium1.0684
Triple Number Coastal/Long Distance High1.1836
Triple Number Windward/Leeward Low0.6509
Triple Number Windward/Leeward Medium0.8717
Triple Number Windward/Leeward High0.9806
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8373
Triple Number Coastal/Long Distance Medium1.0684
Triple Number Coastal/Long Distance High1.1836
Triple Number Windward/Leeward Low0.6509
Triple Number Windward/Leeward Medium0.8717
Triple Number Windward/Leeward High0.9806
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Predominantly Upwind615.30.9751
Predominantly Downwind567.51.0572
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.70.9777
Triple Number Coastal/Long Distance Low716.60.8373
Triple Number Coastal/Long Distance Medium561.61.0684
Triple Number Coastal/Long Distance High506.91.1836
Triple Number Windward/Leeward Low921.80.6509
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1499.21012.0774.7651.0581.8545.6516.4469.2448.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low716.60.8373
Triple Number AP Medium561.61.0683
Triple Number AP High506.91.1836
Triple Number Windward/Leeward Low961.40.6241
Triple Number Windward/Leeward Medium688.30.8717
Triple Number Windward/Leeward High611.90.9806
Single Number Predominant Upwind640.40.9368
Single Number Predominant Reaching559.51.0725
Single Number Predominant Downwind589.91.0171
Predominant Upwind - Low878.30.6832
Predominant Upwind - Low/Med673.60.8907
Predominant Upwind - Medium596.31.0062
Predominant Upwind - Med/High559.71.0721
Predominant Upwind - High543.31.1044
Predominant Downwind Low841.30.7132
Predominant Downwind Low/Med633.10.9477
Predominant Downwind Medium549.91.0911
Predominant Downwind Med/High497.91.2050
Predominant Downwind High459.51.3059
Predominant Reaching Low760.50.7890
Predominant Reaching Low/Med589.41.0180
Predominant Reaching Medium526.31.1401
Predominant Reaching Med/High488.31.2288
Predominant Reaching High460.01.3044
SA/DSPL Upwind21.03SA/DSPL Downwind48.09
Scoring OptionTODTOT
5-Band Windward/Leeward Low1071.70.5599
5-Band Windward/Leeward Low/Med792.20.7574
5-Band Windward/Leeward Medium677.40.8857
5-Band Windward/Leeward Med/High619.20.9689
5-Band Windward/Leeward High591.81.0139
Windward/Leeward 60-40 Low1085.80.5526
Windward/Leeward 60-40 Low/Med806.00.7444
Windward/Leeward 60-40 Medium692.50.8664
Windward/Leeward 60-40 Med/High637.70.9409
Windward/Leeward 60-40 High614.80.9760
5-Band AP Low783.50.7658
5-Band AP Low/Med630.00.9524
5-Band AP Medium554.41.0822
5-Band AP Med/High513.11.1693
5-Band AP High489.91.2248
5-Band SF Bay Tour - Low928.80.6460
5-Band SF Bay Tour - Low/Med759.40.7900
5-Band SF Bay Tour - Medium654.20.9172
5-Band SF Bay Tour - Med/High600.90.9984
5-Band SF Bay Tour - High574.81.0438
Chicago-Mac Upwind0.9090
Chicago-Mac All Purpose0.9480
Chicago-Mac Downwind0.9833
Bayview-Mac Cove Island0.7010
Bayview-Mac Shore0.7051
Harvest Moon Regatta493.01.2171
Club Certificate2025
BLACK VELVETIRL 3471
ORC
Central Rating Office
Issuing certificates for
Ireland
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFirst 34.7Measurement04/06/2025HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.982Max. Beam3.372Draft1.990Displacement4,594Wetted area22.28IMS L9.131LSM08.850Acc. length9.982Sink (kg/mm) 16.76
VCGD-0.044VCGM-0.026RM Rated (kg·m) 101.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight578Declared crew weight595
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.410PBW0.100PIPA0.0030
EDL1.790ST10.035ST20.180
ST30.180ST40.100ST50.280
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P12.900IG13.050ISP14.330MDT10.115MDL10.170MDT20.115MDL20.135TL0.700MW0.170GO0.192
E4.490J3.630BAS1.569FSD0.033SFJ0.000SPLWPLTPS5.030BD0.130MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered101.0Flotation Date04/06/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
BLACK VELVETIRL 3471
ORC
Central Rating Office
Issuing certificates for
Ireland
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.881.562.6933.60IRC 2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.561.061.983.8012.69NoNo 24.80IRC 2025
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA215.0014.0014.508.158.7793%99.98
CRUISER/RACER REQUIREMENTS*
Accommodation length10.0 mTable area0.44 m²Headroom1.70 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity80 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity50 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.