Club Certificate2025
FireflyNED 4926
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
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 Angles43.2°43.2°41.2°40.0°38.9°39.0°39.2°41.5°43.4°
Beat VMG2.042.823.413.834.114.234.244.154.05
52°3.194.295.075.545.835.996.046.076.05
60°3.404.525.275.705.986.196.286.366.39
75°3.524.665.405.836.156.446.676.876.98
90°3.394.625.496.006.376.586.807.327.62
110°3.444.665.536.046.526.977.418.028.64
120°3.274.495.395.946.416.897.428.8210.25
135°2.793.944.925.676.136.587.058.4112.00
150°2.363.414.375.185.786.206.627.5810.02
Run VMG2.032.953.794.535.215.706.086.848.68
Gybe Angles148.9°148.9°153.2°160.2°165.1°174.1°176.8°176.2°139.0°
APH ToD:673.2CDL: 6.012APH ToT: 0.8913CertNo:4745
BOAT
ClassF & F 65 STDDesignerJac de RidderBuilderF&F BoatsAge date04/1992Series date04/1992Offset fileh191.bofData fileNED4926
HULL
Length Overall6.499 mMaximum Beam2.510 mDraft1.246 mDisplacement927 kgDLR4.5097IMS DivisionSportboatDynamic Allowance0.220%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight315 kg(declared)Minimum weight185 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail13.4613.74Headsail Luffed13.6213.62Headsail FlyingSymmetric31.4431.44Asymmetric
STORM SAIL AREAS (m²)
Trysail3.94Storm Jib2.58Heavy Weather Jib6.95
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.
ORC Ref  04310003WTLIssued on 20/08/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
FireflyNED 4926
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
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 VMG1761.71278.71054.7940.4875.3851.8848.6868.0889.0
52°1128.2838.5710.5650.1617.6600.8596.1593.4594.7
60°1059.7796.0683.1631.8601.9581.2573.1566.4563.6
75°1021.5772.3667.1617.9585.8558.6539.8524.0516.1
90°1060.5779.9655.2599.9564.8547.2529.1491.6472.5
110°1046.1772.5651.5595.6552.3516.2485.8449.0416.7
120°1101.0802.6667.7605.9561.9522.8485.0408.1351.2
135°1290.0914.0732.0634.5587.3547.0510.4428.3299.9
150°1526.71055.9824.7695.4622.5580.8543.9475.0359.3
Run VMG1769.81219.3949.2794.4690.8632.0592.6526.5414.9
Selected Courses
Windward / Leeward1763.81249.01002.0867.4783.1741.9720.6697.3652.0
All purpose1335.2964.2790.9701.7647.8616.8595.8565.6527.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward826.40.7261
All purpose673.20.8913
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6252
Downwind "popa"0.7771
70% up, 30% down "Ilhabela"0.6642
30% up, 70% down "Ilhabela-inverso"0.7243
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Predominantly Upwind732.60.8190
Predominantly Downwind681.80.8800
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low877.50.6837
Triple Number AP Medium670.00.8955
Triple Number AP High589.71.0174
Triple Number Windward/Leeward Low1176.10.5102
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Single Number Predominant Upwind762.80.7866
Single Number Predominant Reaching669.70.8960
Single Number Predominant Downwind710.90.8440
Predominant Upwind - Low1060.60.5657
Predominant Upwind - Low/Med807.90.7426
Predominant Upwind - Medium707.40.8482
Predominant Upwind - Med/High659.90.9092
Predominant Upwind - High641.80.9349
Predominant Downwind Low1066.80.5624
Predominant Downwind Low/Med780.00.7692
Predominant Downwind Medium656.00.9146
Predominant Downwind Med/High577.41.0391
Predominant Downwind High517.91.1585
Predominant Reaching Low949.50.6319
Predominant Reaching Low/Med718.70.8349
Predominant Reaching Medium625.00.9600
Predominant Reaching Med/High567.31.0577
Predominant Reaching High523.61.1459
SA/DSPL Upwind28.49SA/DSPL Downwind47.24
Scoring OptionTODTOT
5-Band Windward/Leeward Low1316.40.4558
5-Band Windward/Leeward Low/Med958.60.6259
5-Band Windward/Leeward Medium803.40.7468
5-Band Windward/Leeward Med/High725.50.8271
5-Band Windward/Leeward High693.50.8652
Windward/Leeward 60-40 Low1321.80.4539
Windward/Leeward 60-40 Low/Med971.10.6179
Windward/Leeward 60-40 Medium821.70.7302
Windward/Leeward 60-40 Med/High751.30.7986
Windward/Leeward 60-40 High728.40.8237
5-Band AP Low970.70.6181
5-Band AP Low/Med763.80.7855
5-Band AP Medium659.20.9102
5-Band AP Med/High598.61.0023
5-Band AP High564.31.0633
5-Band SF Bay Tour - Low1135.40.5284
5-Band SF Bay Tour - Low/Med919.60.6524
5-Band SF Bay Tour - Medium779.30.7699
5-Band SF Bay Tour - Med/High708.30.8471
5-Band SF Bay Tour - High676.50.8870
Chicago-Mac Upwind0.7611
Chicago-Mac All Purpose0.7883
Chicago-Mac Downwind0.8103
Bayview-Mac Cove Island0.5711
Bayview-Mac Shore0.5753
Harvest Moon Regatta574.31.0448
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance731.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating731.50.8203
FinRating, kevyt tuuli1293.70.7730
FinRating, kova tuuli560.30.8923
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8203
Triple Number Coastal/Long Distance Low0.6837
Triple Number Coastal/Long Distance Medium0.8956
Triple Number Coastal/Long Distance High1.0174
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7325
Triple Number Windward/Leeward High0.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
For information
General Purpose Handicap (GPH)758.4
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low877.6
Triple Number Coastal/Long Distance Medium669.9
Triple Number Coastal/Long Distance High589.7
Triple Number Windward/Leeward Low1125.5
Triple Number Windward/Leeward Medium819.1
Triple Number Windward/Leeward High717.2
Predominantly Upwind732.6
Predominantly Downwind681.8
Predominantly Reaching654.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6837
Triple Number Coastal/Long Distance Medium0.8956
Triple Number Coastal/Long Distance High1.0174
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7325
Triple Number Windward/Leeward High0.8366
Coastal/Long Distance0.8203
Predominantly Upwind0.8190
Predominantly Downwind0.8800
For information
General Purpose Handicap (GPH)758.4
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8913
Distanseseilas Trippeltall svak vind0.6837
Distanseseilas Trippeltall mellomvind0.8956
Distanseseilas Trippeltall sterk vind1.0174
Pølsebane Trippeltall svak vind0.5331
Pølsebane Trippeltall mellomvind0.7325
Pølsebane Trippeltall sterk vind0.8366
Motvind Singeltall0.8190
Medvind Singeltall0.8800
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Coastal/Long Distance731.50.8203
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind732.60.8190
Predominantly Downwind681.80.8800
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore665.60.9015
Cape Doctor Coastal539.11.1130
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6837
Triple Number Coastal/Long Distance Medium0.8956
Triple Number Coastal/Long Distance High1.0174
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7325
Triple Number Windward/Leeward High0.8366
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6837
Triple Number Coastal/Long Distance Medium0.8956
Triple Number Coastal/Long Distance High1.0174
Triple Number Windward/Leeward Low0.5331
Triple Number Windward/Leeward Medium0.7325
Triple Number Windward/Leeward High0.8366
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Predominantly Upwind732.60.8190
Predominantly Downwind681.80.8800
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance731.50.8203
Triple Number Coastal/Long Distance Low877.60.6837
Triple Number Coastal/Long Distance Medium669.90.8956
Triple Number Coastal/Long Distance High589.71.0174
Triple Number Windward/Leeward Low1125.50.5331
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1871.01246.0943.1785.9690.6640.7601.6528.9489.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low877.50.6837
Triple Number AP Medium670.00.8955
Triple Number AP High589.71.0174
Triple Number Windward/Leeward Low1176.10.5102
Triple Number Windward/Leeward Medium819.10.7325
Triple Number Windward/Leeward High717.20.8366
Single Number Predominant Upwind762.80.7866
Single Number Predominant Reaching669.70.8960
Single Number Predominant Downwind710.90.8440
Predominant Upwind - Low1060.60.5657
Predominant Upwind - Low/Med807.90.7426
Predominant Upwind - Medium707.40.8482
Predominant Upwind - Med/High659.90.9092
Predominant Upwind - High641.80.9349
Predominant Downwind Low1066.80.5624
Predominant Downwind Low/Med780.00.7692
Predominant Downwind Medium656.00.9146
Predominant Downwind Med/High577.41.0391
Predominant Downwind High517.91.1585
Predominant Reaching Low949.50.6319
Predominant Reaching Low/Med718.70.8349
Predominant Reaching Medium625.00.9600
Predominant Reaching Med/High567.31.0577
Predominant Reaching High523.61.1459
SA/DSPL Upwind28.49SA/DSPL Downwind47.24
Scoring OptionTODTOT
5-Band Windward/Leeward Low1316.40.4558
5-Band Windward/Leeward Low/Med958.60.6259
5-Band Windward/Leeward Medium803.40.7468
5-Band Windward/Leeward Med/High725.50.8271
5-Band Windward/Leeward High693.50.8652
Windward/Leeward 60-40 Low1321.80.4539
Windward/Leeward 60-40 Low/Med971.10.6179
Windward/Leeward 60-40 Medium821.70.7302
Windward/Leeward 60-40 Med/High751.30.7986
Windward/Leeward 60-40 High728.40.8237
5-Band AP Low970.70.6181
5-Band AP Low/Med763.80.7855
5-Band AP Medium659.20.9102
5-Band AP Med/High598.61.0023
5-Band AP High564.31.0633
5-Band SF Bay Tour - Low1135.40.5284
5-Band SF Bay Tour - Low/Med919.60.6524
5-Band SF Bay Tour - Medium779.30.7699
5-Band SF Bay Tour - Med/High708.30.8471
5-Band SF Bay Tour - High676.50.8870
Chicago-Mac Upwind0.7611
Chicago-Mac All Purpose0.7883
Chicago-Mac Downwind0.8103
Bayview-Mac Cove Island0.5711
Bayview-Mac Shore0.5753
Harvest Moon Regatta574.31.0448
ORC Ref  04310003WTLIssued on 20/08/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
FireflyNED 4926
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassF & F 65 STDMeasurement11/08/1992HINPlan reviewHull constructionLightCarbon rudderNoLight stanchionsNoTrim tabNo
LOA6.499Max. Beam2.510Draft1.246Displacement927Wetted area9.89IMS L6.202LSM05.901Acc. length6.499Sink (kg/mm) 7.95
VCGD0.083VCGM0.133RM Rated (kg·m) 22.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight324Declared crew weight315
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionFixedInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P7.950IG7.175ISP7.480MDT10.072MDL10.094MDT20.055MDL20.062TL1.600MW0.094GO0.094
E2.830J2.380BAS0.890FSD0.000SFJ0.000SPL2.760WPLTPSBD0.085MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date20/08/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04310003WTLIssued on 20/08/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
FireflyNED 4926
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.120.611.081.822.3913.46* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20253.647.35NoNo 13.6212.407.25YesNo 8.86* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC7.597.597.594.974.9731.44* Copied from legacy *
ORC Ref  04310003WTLIssued on 20/08/2025Valid until 31/03/2026
VPP ver: 2025 1.01 | © ORC | www.orc.org