Club
Certificate
2023

Boat

FIREFLY

USA 40935

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles41.8°39.6°37.0°36.0°35.4°35.1°35.0°
Beat VMG3.904.665.115.305.405.485.54
52°5.866.697.067.227.327.387.47
60°6.126.847.187.387.497.577.67
75°6.266.937.287.557.737.858.02
90°6.116.877.297.607.868.098.40
110°5.676.767.327.728.058.328.75
120°5.526.647.257.708.118.509.27
135°5.006.176.947.427.868.319.42
150°4.215.346.306.987.427.838.71
Run VMG3.644.635.476.176.737.207.97
Gybe Angles144.2°148.7°152.3°158.6°171.2°177.2°178.4°

APH: 542.7

CDL: 9.386

GPH: 604.8

CertNo: US6934

BOAT
ClassJ 35DesignerJOHNSTONEBuilderJ BOATAge date01/1986Series date01/1983Offset fileJ35.OFFData fileUS6934
HULL
Length Overall10.820 mMaximum Beam3.646 mDraft2.098 mDisplacement4,247 kgDLR6.4673IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.440m
CREW
Maximum weight726 kgMinimum weight544 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail32.2032.83Headsail Luffed50.4350.43Headsail FlyingSymmetric95.0295.02Asymmetric
STORM SAIL AREAS (m²)
Trysail9.45Storm Jib10.14Heavy Weather Jib27.37
SAIL LIMITS
Headsails5  Spinnakers4
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.
ORC Ref  04560002P5SIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

FIREFLY

USA 40935

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG922.6771.8705.1679.6666.1657.2650.1
52°614.4538.2510.2498.6491.9487.5482.3
60°588.6526.2501.1488.0480.8475.8469.6
75°575.4519.8494.2477.1465.8458.4449.2
90°589.6523.8494.2474.0457.9445.2428.7
110°635.4532.9491.9466.6447.3432.6411.5
120°652.0542.6496.4467.3443.7423.5388.2
135°720.1583.5519.1485.1457.8433.1382.3
150°856.0674.1571.2515.9485.0459.6413.4
Run VMG988.4778.4658.4583.7534.6499.9451.5
Selected Courses
Windward / Leeward955.5775.1681.8631.6600.3578.6550.8
All purpose738.9616.9558.8527.4507.1492.0469.1
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward656.60.9138
All purpose542.71.1056
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8313
Downwind "popa"0.9344
70% up, 30% down "Ilhabela"0.8598
30% up, 70% down "Ilhabela-inverso"0.9009
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Predominantly Upwind578.31.0376
Predominantly Downwind556.31.0785
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low678.00.8850
Triple Number All Purpose Medium540.21.1106
Triple Number All Purpose High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Predominantly Upwind578.31.0376
Predominantly Downwind556.31.0785
Predominantly Upwind Low732.60.8190
Predominantly Upwind Medium592.61.0125
Predominantly Upwind High560.41.0707
Predominantly Downwind Low756.70.7930
Predominantly Downwind Medium557.01.0772
Predominantly Downwind High466.01.2875
Chicago-Mac Upwind1.0218
Chicago-Mac All Purpose1.0383
Chicago-Mac Downwind1.0602
Bayview-Mac Cove Island0.9764
Bayview-Mac Shore0.9885
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching519.71.1546
Predominantly Reaching Low619.70.9682
Predominantly Reaching Medium516.91.1607
Predominantly Reaching High459.61.3054
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low941.60.6372
5-Band Low / Medium794.70.7550
5-Band Medium642.20.9343
5-Band Medium / High582.01.0309
5-Band High555.61.0800
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance587.4
Triple Number Coastal/Long Distance Low678.0
Triple Number Coastal/Long Distance Medium540.2
Triple Number Coastal/Long Distance High487.2
Triple Number Windward/Leeward Low865.3
Triple Number Windward/Leeward Medium652.5
Triple Number Windward/Leeward High573.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8850
Triple Number Coastal/Long Distance Medium1.1106
Triple Number Coastal/Long Distance High1.2315
Triple Number Windward/Leeward Low0.6934
Triple Number Windward/Leeward Medium0.9196
Triple Number Windward/Leeward High1.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low678.0
Triple Number Coastal/Long Distance Medium540.2
Triple Number Coastal/Long Distance High487.2
Triple Number Windward/Leeward Low865.3
Triple Number Windward/Leeward Medium652.5
Triple Number Windward/Leeward High573.6
Predominantly Upwind578.3
Predominantly Downwind556.3
Predominantly Reaching532.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8850
Triple Number Coastal/Long Distance Medium1.1106
Triple Number Coastal/Long Distance High1.2315
Triple Number Windward/Leeward Low0.6934
Triple Number Windward/Leeward Medium0.9196
Triple Number Windward/Leeward High1.0461
Coastal/Long Distance1.0215
Predominantly Upwind1.0376
Predominantly Downwind1.0785
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8850
Tretall Distanseseilas Mellomvind1.1106
Tretall Distanseseilas Mye vind1.2315
Tretall Pølsebane Lite vind0.6934
Tretall Pølsebane Mellomvind0.9196
Tretall Pølsebane Mye vind1.0461
Distanseseilas ett tall (OSN 8-16kn)1.0215
Distanseseilas ett tall (APH 6-20kn)1.1056
Enkeltall Motvind1.0376
Enkeltall Medvind1.0785
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Coastal/Long Distance587.41.0215
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind578.31.0376
Predominantly Downwind556.31.0785
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore559.11.0731
Cape Doctor Coastal476.01.2605
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8850
Triple Number Coastal/Long Distance Medium1.1106
Triple Number Coastal/Long Distance High1.2315
Triple Number Windward/Leeward Low0.6934
Triple Number Windward/Leeward Medium0.9196
Triple Number Windward/Leeward High1.0461
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8850
Triple Number Coastal/Long Distance Medium1.1106
Triple Number Coastal/Long Distance High1.2315
Triple Number Windward/Leeward Low0.6934
Triple Number Windward/Leeward Medium0.9196
Triple Number Windward/Leeward High1.0461
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Predominantly Upwind578.31.0376
Predominantly Downwind556.31.0785
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance587.41.0215
Triple Number Coastal/Long Distance Low678.00.8850
Triple Number Coastal/Long Distance Medium540.21.1106
Triple Number Coastal/Long Distance High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance958.8733.4621.8559.5525.1497.0451.7
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low678.00.8850
Triple Number All Purpose Medium540.21.1106
Triple Number All Purpose High487.21.2315
Triple Number Windward/Leeward Low865.30.6934
Triple Number Windward/Leeward Medium652.50.9196
Triple Number Windward/Leeward High573.61.0461
Predominantly Upwind578.31.0376
Predominantly Downwind556.31.0785
Predominantly Upwind Low732.60.8190
Predominantly Upwind Medium592.61.0125
Predominantly Upwind High560.41.0707
Predominantly Downwind Low756.70.7930
Predominantly Downwind Medium557.01.0772
Predominantly Downwind High466.01.2875
Chicago-Mac Upwind1.0218
Chicago-Mac All Purpose1.0383
Chicago-Mac Downwind1.0602
Bayview-Mac Cove Island0.9764
Bayview-Mac Shore0.9885
Harvest Moon Regatta479.21.2522
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy562.11.0675
San Francisco Bay Medium644.20.9314
Predominantly Reaching519.71.1546
Predominantly Reaching Low619.70.9682
Predominantly Reaching Medium516.91.1607
Predominantly Reaching High459.61.3054
Windward/Leeward 60-40 Low861.70.6963
Windward/Leeward 60-40 Medium666.10.9008
Windward/Leeward 60-40 High601.90.9969
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low941.60.6372
5-Band Low / Medium794.70.7550
5-Band Medium642.20.9343
5-Band Medium / High582.01.0309
5-Band High555.61.0800
ORC Ref  04560002P5SIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

FIREFLY

USA 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. Beam3.646Draft2.098Displacement4,247Wetted area22.59IMS L9.116LSM08.691Acc. length10.820Sink (kg/mm) 16.79
VCGD-0.166VCGM-0.079RM Rated (kg·m) 112.4Limit of positive stability(°) N/AStability IndexN/A
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 FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders2Rotating mastNo
P12.650IG14.143ISP14.206MDT10.098MDL10.202MDT20.092MDL20.119TL1.393MW0.132GO0.162
E4.268J4.481BAS1.506FSD0.030SFJ0.000SPL4.571WPLTPS1.000BD0.138MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.166Flotation Date17/02/2022MeasurerComment
SFFP0.582FFMFF1.180LCFcl6.083SG1.0250
SAFP10.519FAMFA0.891LCFsh6.353HBI0.990
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG00.000.00Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCGaAnchor00.00Total deductible0
ORC Ref  04560002P5SIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

FIREFLY

USA 40935

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment24178800.130.931.642.783.5432.202019 CLASS MAINSAIL
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment24178890.100.891.703.405.146.9314.66NoNo 50.432019 CLASS 155%
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment145650514.1314.1314.138.078.0795.02NORTH
ORC Ref  04560002P5SIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org