Club Certificate2025
BLACKHAWKUSA 32478
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
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 Angles42.2°42.2°39.9°37.3°36.3°35.7°35.4°35.2°35.8°
Beat VMG2.853.884.645.095.285.385.455.515.49
52°4.465.846.687.057.217.307.367.457.47
60°4.756.106.837.177.367.467.547.657.70
75°4.926.256.927.287.537.707.828.018.14
90°4.746.116.887.287.597.848.068.368.61
110°4.145.666.747.307.688.008.278.698.96
120°4.015.506.617.227.668.078.459.209.86
135°3.534.966.136.927.417.858.299.3611.40
150°2.924.195.346.316.997.437.848.7110.01
Run VMG2.523.634.635.486.206.757.187.938.76
Gybe Angles145.1°145.1°149.6°152.5°159.0°166.4°171.8°175.0°163.3°
APH ToD:543.8CDL: 9.385APH ToT: 1.1033CertNo:US7208
BOAT
ClassJ 35DesignerJOHNSTONEBuilderTPIAge date06/1988Series date05/1983Offset fileJ35.offData fileUS7208
HULL
Length Overall10.820 mMaximum Beam3.646 mDraft2.104 mDisplacement4,358 kgDLR6.4986IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.000m
CREW
Maximum weight689 kg(declared)Minimum weight559 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail32.5133.16Headsail Luffed52.5652.56Headsail FlyingSymmetric95.7795.77Asymmetric
STORM SAIL AREAS (m²)
Trysail9.45Storm Jib10.10Heavy Weather Jib27.26
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
BLACKHAWKUSA 32478
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
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 VMG1263.0927.0775.2707.2681.8669.0661.2653.2656.3
52°807.9616.1539.2511.0499.2493.1489.1483.4481.9
60°758.6589.9527.0501.9489.0482.3477.6470.3467.6
75°732.4575.9520.2494.8478.3467.5460.6449.3442.3
90°759.6588.9523.5494.3474.5459.0446.9430.8417.9
110°868.7636.4533.8493.5468.6449.8435.1414.5401.9
120°897.7654.1544.8498.4469.8446.2425.9391.5365.1
135°1020.2725.7586.8520.3486.0458.8434.4384.8315.8
150°1234.6858.7673.9570.5514.9484.2459.1413.2359.8
Run VMG1426.7991.5778.2657.1580.8533.2501.3453.9411.1
Selected Courses
Windward / Leeward1343.3959.2776.7682.1631.3601.1581.2553.5533.7
All purpose1012.1741.4618.3559.5528.1508.3493.8470.9450.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward657.50.9126
All purpose543.81.1033
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8277
Downwind "popa"0.9342
70% up, 30% down "Ilhabela"0.8570
30% up, 70% down "Ilhabela-inverso"0.8994
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Predominantly Upwind579.81.0349
Predominantly Downwind557.01.0773
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low679.80.8826
Triple Number AP Medium541.21.1086
Triple Number AP High488.81.2275
Triple Number Windward/Leeward Low906.20.6621
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Single Number Predominant Upwind599.41.0011
Single Number Predominant Reaching541.51.1080
Single Number Predominant Downwind580.01.0346
Predominant Upwind - Low790.80.7588
Predominant Upwind - Low/Med623.90.9617
Predominant Upwind - Medium564.81.0622
Predominant Upwind - Med/High534.11.1233
Predominant Upwind - High517.31.1599
Predominant Downwind Low836.10.7177
Predominant Downwind Low/Med626.50.9578
Predominant Downwind Medium539.51.1121
Predominant Downwind Med/High483.61.2407
Predominant Downwind High445.61.3466
Predominant Reaching Low725.60.8270
Predominant Reaching Low/Med571.31.0503
Predominant Reaching Medium512.11.1717
Predominant Reaching Med/High473.71.2666
Predominant Reaching High446.61.3434
SA/DSPL Upwind31.73SA/DSPL Downwind47.84
Scoring OptionTODTOT
5-Band Windward/Leeward Low1010.00.5941
5-Band Windward/Leeward Low/Med748.80.8013
5-Band Windward/Leeward Medium642.60.9337
5-Band Windward/Leeward Med/High584.11.0272
5-Band Windward/Leeward High554.91.0813
Windward/Leeward 60-40 Low1002.60.5984
Windward/Leeward 60-40 Low/Med751.00.7989
Windward/Leeward 60-40 Medium652.10.9202
Windward/Leeward 60-40 Med/High599.91.0002
Windward/Leeward 60-40 High574.91.0436
5-Band AP Low752.50.7973
5-Band AP Low/Med602.40.9960
5-Band AP Medium534.61.1223
5-Band AP Med/High495.21.2115
5-Band AP High471.31.2729
5-Band SF Bay Tour - Low869.30.6902
5-Band SF Bay Tour - Low/Med715.50.8386
5-Band SF Bay Tour - Medium621.60.9653
5-Band SF Bay Tour - Med/High570.41.0519
5-Band SF Bay Tour - High542.41.1062
Chicago-Mac Upwind0.9754
Chicago-Mac All Purpose0.9903
Chicago-Mac Downwind0.9983
Bayview-Mac Cove Island0.7403
Bayview-Mac Shore0.7472
Harvest Moon Regatta480.41.2491
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance588.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating588.51.0195
FinRating, kevyt tuuli993.91.0062
FinRating, kova tuuli473.71.0555
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0195
Triple Number Coastal/Long Distance Low0.8826
Triple Number Coastal/Long Distance Medium1.1087
Triple Number Coastal/Long Distance High1.2275
Triple Number Windward/Leeward Low0.6913
Triple Number Windward/Leeward Medium0.9191
Triple Number Windward/Leeward High1.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
For information
General Purpose Handicap (GPH)606.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low679.8
Triple Number Coastal/Long Distance Medium541.2
Triple Number Coastal/Long Distance High488.8
Triple Number Windward/Leeward Low867.9
Triple Number Windward/Leeward Medium652.8
Triple Number Windward/Leeward High575.8
Predominantly Upwind579.8
Predominantly Downwind557.0
Predominantly Reaching533.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8826
Triple Number Coastal/Long Distance Medium1.1087
Triple Number Coastal/Long Distance High1.2275
Triple Number Windward/Leeward Low0.6913
Triple Number Windward/Leeward Medium0.9191
Triple Number Windward/Leeward High1.0420
Coastal/Long Distance1.0195
Predominantly Upwind1.0349
Predominantly Downwind1.0773
For information
General Purpose Handicap (GPH)606.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1033
Distanseseilas Trippeltall svak vind0.8826
Distanseseilas Trippeltall mellomvind1.1087
Distanseseilas Trippeltall sterk vind1.2275
Pølsebane Trippeltall svak vind0.6913
Pølsebane Trippeltall mellomvind0.9191
Pølsebane Trippeltall sterk vind1.0420
Motvind Singeltall1.0349
Medvind Singeltall1.0773
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Coastal/Long Distance588.51.0195
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind579.81.0349
Predominantly Downwind557.01.0773
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore539.71.1118
Cape Doctor Coastal456.81.3135
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8826
Triple Number Coastal/Long Distance Medium1.1087
Triple Number Coastal/Long Distance High1.2275
Triple Number Windward/Leeward Low0.6913
Triple Number Windward/Leeward Medium0.9191
Triple Number Windward/Leeward High1.0420
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8826
Triple Number Coastal/Long Distance Medium1.1087
Triple Number Coastal/Long Distance High1.2275
Triple Number Windward/Leeward Low0.6913
Triple Number Windward/Leeward Medium0.9191
Triple Number Windward/Leeward High1.0420
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Predominantly Upwind579.81.0349
Predominantly Downwind557.01.0773
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.51.0195
Triple Number Coastal/Long Distance Low679.80.8826
Triple Number Coastal/Long Distance Medium541.21.1087
Triple Number Coastal/Long Distance High488.81.2275
Triple Number Windward/Leeward Low867.90.6913
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.6962.5734.8622.4560.2526.4499.0453.6434.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low679.80.8826
Triple Number AP Medium541.21.1086
Triple Number AP High488.81.2275
Triple Number Windward/Leeward Low906.20.6621
Triple Number Windward/Leeward Medium652.80.9191
Triple Number Windward/Leeward High575.81.0420
Single Number Predominant Upwind599.41.0011
Single Number Predominant Reaching541.51.1080
Single Number Predominant Downwind580.01.0346
Predominant Upwind - Low790.80.7588
Predominant Upwind - Low/Med623.90.9617
Predominant Upwind - Medium564.81.0622
Predominant Upwind - Med/High534.11.1233
Predominant Upwind - High517.31.1599
Predominant Downwind Low836.10.7177
Predominant Downwind Low/Med626.50.9578
Predominant Downwind Medium539.51.1121
Predominant Downwind Med/High483.61.2407
Predominant Downwind High445.61.3466
Predominant Reaching Low725.60.8270
Predominant Reaching Low/Med571.31.0503
Predominant Reaching Medium512.11.1717
Predominant Reaching Med/High473.71.2666
Predominant Reaching High446.61.3434
SA/DSPL Upwind31.73SA/DSPL Downwind47.84
Scoring OptionTODTOT
5-Band Windward/Leeward Low1010.00.5941
5-Band Windward/Leeward Low/Med748.80.8013
5-Band Windward/Leeward Medium642.60.9337
5-Band Windward/Leeward Med/High584.11.0272
5-Band Windward/Leeward High554.91.0813
Windward/Leeward 60-40 Low1002.60.5984
Windward/Leeward 60-40 Low/Med751.00.7989
Windward/Leeward 60-40 Medium652.10.9202
Windward/Leeward 60-40 Med/High599.91.0002
Windward/Leeward 60-40 High574.91.0436
5-Band AP Low752.50.7973
5-Band AP Low/Med602.40.9960
5-Band AP Medium534.61.1223
5-Band AP Med/High495.21.2115
5-Band AP High471.31.2729
5-Band SF Bay Tour - Low869.30.6902
5-Band SF Bay Tour - Low/Med715.50.8386
5-Band SF Bay Tour - Medium621.60.9653
5-Band SF Bay Tour - Med/High570.41.0519
5-Band SF Bay Tour - High542.41.1062
Chicago-Mac Upwind0.9754
Chicago-Mac All Purpose0.9903
Chicago-Mac Downwind0.9983
Bayview-Mac Cove Island0.7403
Bayview-Mac Shore0.7472
Harvest Moon Regatta480.41.2491
Club Certificate2025
BLACKHAWKUSA 32478
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 35MeasurementHIN215Plan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.820Max. Beam3.646Draft2.104Displacement4,358Wetted area22.85IMS L9.178LSM08.752Acc. length10.820Sink (kg/mm) 16.99
VCGD-0.201VCGM-0.121RM Rated (kg·m) 118.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight569Declared crew weight689
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.000PBW0.000PIPA0.0026
PSD0.025PHD0.043PHL0.153
PSA18.0°ESL0.802
ST10.025ST20.083ST30.083
ST40.037ST50.000
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstaysCheckstays1Spreaders2Rotating mastNo
P12.650IG14.143ISP14.143MDT10.116MDL10.180MDT20.098MDL20.132TL1.771MW0.132GO0.153
E4.268J4.481BAS1.485FSD0.036SFJ0.000SPL4.571WPLTPS0.000BD0.153MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered118.0Flotation Date15/03/2018
BALLAST
TANKS
IdDescriptionCapacityLCGVCGSp.WghtLevel
Sailing
0.000.00
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG00.000.00Total deductible
Total deductible
Club Certificate2025
BLACKHAWKUSA 32478
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMN-250.150.921.652.783.6332.5120/03/2025196579
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment8394306.930.00NoNo 52.5618313560.080.881.723.435.186.9414.64NoNo 50.64155 genoa #1
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment83942814.0614.0614.067.9695.77