Club Certificate2025
FIREFLYUSA 40935
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°37.2°36.1°35.5°35.2°34.9°35.6°
Beat VMG2.843.874.635.105.305.415.475.545.52
52°4.435.826.667.057.237.327.387.477.49
60°4.726.086.827.177.387.487.567.677.72
75°4.886.236.917.277.537.727.848.038.16
90°4.706.086.867.277.587.858.078.388.64
110°4.145.666.757.307.698.028.298.718.98
120°4.015.506.617.227.678.088.469.239.91
135°3.534.966.136.927.417.858.299.3611.43
150°2.924.205.346.316.997.437.848.7110.00
Run VMG2.523.634.635.486.206.757.187.938.76
Gybe Angles145.1°145.1°149.6°152.5°159.1°166.4°171.8°175.0°163.3°
APH ToD:543.3CDL: 9.428APH ToT: 1.1044CertNo:US6934
BOAT
ClassJ 35DesignerJOHNSTONEBuilderJ BOATAge date01/1986Series date01/1983Offset fileJ35.OFFData fileUS6934
HULL
Length Overall10.820 mMaximum Beam3.646 mDraft2.104 mDisplacement4,358 kgDLR6.4986IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.440m
CREW
Maximum weight726 kg(declared)Minimum weight596 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail32.5633.22Headsail Luffed50.9450.94Headsail FlyingSymmetric95.3195.31Asymmetric
STORM SAIL AREAS (m²)
Trysail9.45Storm Jib10.14Heavy Weather Jib27.37
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
FIREFLYUSA 40935
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 VMG1268.9931.0777.3705.6678.8665.5657.9649.9652.4
52°813.2618.9540.3510.8498.1491.8487.9482.1480.5
60°763.3592.3527.9501.9488.1481.0476.4469.2466.4
75°737.1578.3521.0495.1478.0466.4459.4448.3441.2
90°765.7591.9524.8495.0474.8458.8446.3429.6416.7
110°868.8636.2533.6493.2468.1449.2434.2413.3400.8
120°897.6654.2544.8498.4469.6445.8425.3390.1363.1
135°1020.5725.9587.1520.5486.1458.9434.4384.5314.8
150°1234.0858.2673.5570.4515.1484.3459.1413.2359.9
Run VMG1425.9990.9777.7656.8580.9533.3501.3453.9411.1
Selected Courses
Windward / Leeward1345.8961.0777.5681.2629.9599.4579.6551.9531.8
All purpose1015.1743.0619.0559.2527.3507.2492.7469.6449.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward656.40.9140
All purpose543.31.1044
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8291
Downwind "popa"0.9344
70% up, 30% down "Ilhabela"0.8581
30% up, 70% down "Ilhabela-inverso"0.9001
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Predominantly Upwind579.21.0360
Predominantly Downwind556.91.0774
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low681.00.8810
Triple Number AP Medium540.61.1099
Triple Number AP High487.71.2304
Triple Number Windward/Leeward Low907.40.6612
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Single Number Predominant Upwind598.91.0018
Single Number Predominant Reaching541.61.1078
Single Number Predominant Downwind579.91.0347
Predominant Upwind - Low793.50.7561
Predominant Upwind - Low/Med624.30.9610
Predominant Upwind - Medium563.81.0642
Predominant Upwind - Med/High532.61.1266
Predominant Upwind - High515.51.1638
Predominant Downwind Low837.10.7168
Predominant Downwind Low/Med626.70.9574
Predominant Downwind Medium539.31.1125
Predominant Downwind Med/High483.11.2419
Predominant Downwind High444.91.3487
Predominant Reaching Low727.70.8245
Predominant Reaching Low/Med571.91.0492
Predominant Reaching Medium511.91.1722
Predominant Reaching Med/High473.01.2685
Predominant Reaching High445.61.3464
SA/DSPL Upwind31.14SA/DSPL Downwind47.69
Scoring OptionTODTOT
5-Band Windward/Leeward Low1011.70.5931
5-Band Windward/Leeward Low/Med748.80.8013
5-Band Windward/Leeward Medium641.40.9355
5-Band Windward/Leeward Med/High582.51.0300
5-Band Windward/Leeward High553.21.0846
Windward/Leeward 60-40 Low1004.80.5971
Windward/Leeward 60-40 Low/Med751.00.7989
Windward/Leeward 60-40 Medium650.60.9223
Windward/Leeward 60-40 Med/High597.91.0035
Windward/Leeward 60-40 High572.91.0473
5-Band AP Low754.00.7958
5-Band AP Low/Med602.60.9956
5-Band AP Medium534.01.1237
5-Band AP Med/High494.11.2142
5-Band AP High470.11.2764
5-Band SF Bay Tour - Low871.00.6889
5-Band SF Bay Tour - Low/Med715.50.8386
5-Band SF Bay Tour - Medium620.30.9673
5-Band SF Bay Tour - Med/High568.71.0550
5-Band SF Bay Tour - High540.61.1098
Chicago-Mac Upwind0.9757
Chicago-Mac All Purpose0.9904
Chicago-Mac Downwind0.9982
Bayview-Mac Cove Island0.7393
Bayview-Mac Shore0.7460
Harvest Moon Regatta480.11.2497
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance588.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating588.01.0205
FinRating, kevyt tuuli995.61.0044
FinRating, kova tuuli472.31.0586
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0205
Triple Number Coastal/Long Distance Low0.8810
Triple Number Coastal/Long Distance Medium1.1100
Triple Number Coastal/Long Distance High1.2304
Triple Number Windward/Leeward Low0.6902
Triple Number Windward/Leeward Medium0.9207
Triple Number Windward/Leeward High1.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
For information
General Purpose Handicap (GPH)606.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low681.0
Triple Number Coastal/Long Distance Medium540.5
Triple Number Coastal/Long Distance High487.6
Triple Number Windward/Leeward Low869.3
Triple Number Windward/Leeward Medium651.7
Triple Number Windward/Leeward High574.2
Predominantly Upwind579.2
Predominantly Downwind556.9
Predominantly Reaching533.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8810
Triple Number Coastal/Long Distance Medium1.1100
Triple Number Coastal/Long Distance High1.2304
Triple Number Windward/Leeward Low0.6902
Triple Number Windward/Leeward Medium0.9207
Triple Number Windward/Leeward High1.0450
Coastal/Long Distance1.0205
Predominantly Upwind1.0360
Predominantly Downwind1.0774
For information
General Purpose Handicap (GPH)606.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1044
Distanseseilas Trippeltall svak vind0.8810
Distanseseilas Trippeltall mellomvind1.1100
Distanseseilas Trippeltall sterk vind1.2304
Pølsebane Trippeltall svak vind0.6902
Pølsebane Trippeltall mellomvind0.9207
Pølsebane Trippeltall sterk vind1.0450
Motvind Singeltall1.0360
Medvind Singeltall1.0774
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Coastal/Long Distance588.01.0205
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind579.21.0360
Predominantly Downwind556.91.0774
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore537.81.1156
Cape Doctor Coastal455.41.3176
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8810
Triple Number Coastal/Long Distance Medium1.1100
Triple Number Coastal/Long Distance High1.2304
Triple Number Windward/Leeward Low0.6902
Triple Number Windward/Leeward Medium0.9207
Triple Number Windward/Leeward High1.0450
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8810
Triple Number Coastal/Long Distance Medium1.1100
Triple Number Coastal/Long Distance High1.2304
Triple Number Windward/Leeward Low0.6902
Triple Number Windward/Leeward Medium0.9207
Triple Number Windward/Leeward High1.0450
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Predominantly Upwind579.21.0360
Predominantly Downwind556.91.0774
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance588.01.0205
Triple Number Coastal/Long Distance Low681.00.8810
Triple Number Coastal/Long Distance Medium540.51.1100
Triple Number Coastal/Long Distance High487.61.2304
Triple Number Windward/Leeward Low869.30.6902
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1436.8964.0735.6621.8559.2525.2497.9452.4433.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low681.00.8810
Triple Number AP Medium540.61.1099
Triple Number AP High487.71.2304
Triple Number Windward/Leeward Low907.40.6612
Triple Number Windward/Leeward Medium651.70.9207
Triple Number Windward/Leeward High574.21.0450
Single Number Predominant Upwind598.91.0018
Single Number Predominant Reaching541.61.1078
Single Number Predominant Downwind579.91.0347
Predominant Upwind - Low793.50.7561
Predominant Upwind - Low/Med624.30.9610
Predominant Upwind - Medium563.81.0642
Predominant Upwind - Med/High532.61.1266
Predominant Upwind - High515.51.1638
Predominant Downwind Low837.10.7168
Predominant Downwind Low/Med626.70.9574
Predominant Downwind Medium539.31.1125
Predominant Downwind Med/High483.11.2419
Predominant Downwind High444.91.3487
Predominant Reaching Low727.70.8245
Predominant Reaching Low/Med571.91.0492
Predominant Reaching Medium511.91.1722
Predominant Reaching Med/High473.01.2685
Predominant Reaching High445.61.3464
SA/DSPL Upwind31.14SA/DSPL Downwind47.69
Scoring OptionTODTOT
5-Band Windward/Leeward Low1011.70.5931
5-Band Windward/Leeward Low/Med748.80.8013
5-Band Windward/Leeward Medium641.40.9355
5-Band Windward/Leeward Med/High582.51.0300
5-Band Windward/Leeward High553.21.0846
Windward/Leeward 60-40 Low1004.80.5971
Windward/Leeward 60-40 Low/Med751.00.7989
Windward/Leeward 60-40 Medium650.60.9223
Windward/Leeward 60-40 Med/High597.91.0035
Windward/Leeward 60-40 High572.91.0473
5-Band AP Low754.00.7958
5-Band AP Low/Med602.60.9956
5-Band AP Medium534.01.1237
5-Band AP Med/High494.11.2142
5-Band AP High470.11.2764
5-Band SF Bay Tour - Low871.00.6889
5-Band SF Bay Tour - Low/Med715.50.8386
5-Band SF Bay Tour - Medium620.30.9673
5-Band SF Bay Tour - Med/High568.71.0550
5-Band SF Bay Tour - High540.61.1098
Chicago-Mac Upwind0.9757
Chicago-Mac All Purpose0.9904
Chicago-Mac Downwind0.9982
Bayview-Mac Cove Island0.7393
Bayview-Mac Shore0.7460
Harvest Moon Regatta480.11.2497
Club Certificate2025
FIREFLYUSA 40935
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 35MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.820Max. Beam3.646Draft2.104Displacement4,358Wetted area22.85IMS L9.177LSM08.752Acc. 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 weight726
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.440PBW0.104PIPA0.0027
PSD0.025PHD0.046PHL0.150
PSA18.0°ESL0.772
ST10.022ST20.083ST30.083
ST40.037ST50.162
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.650IG14.143ISP14.206MDT10.098MDL10.202MDT20.092MDL20.119TL1.393MW0.132GO0.162
E4.268J4.481BAS1.506FSD0.036SFJ0.000SPL4.571WPLTPS1.000BD0.138MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered118.0Flotation Date15/03/2018
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
FIREFLYUSA 40935
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMn-240.170.931.662.783.6332.5611/02/202418585224178800.130.931.642.783.5432.202019 CLASS MAINSAIL
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG1-240.100.901.733.425.146.9614.74NoNo 50.9418/04/202419011724178890.100.891.703.405.146.9314.66NoNo 50.432019 CLASS 155%
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS2-2414.2414.2414.248.097.8095.3118/04/2024190118