Club Certificate2025
ModocNED 28FF
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 Angles43.3°43.3°41.4°40.2°39.1°39.1°39.4°41.5°43.4°
Beat VMG2.022.783.383.804.094.224.234.154.04
52°3.154.255.045.525.826.006.056.086.06
60°3.364.495.255.695.986.216.316.386.40
75°3.484.635.385.826.166.476.716.927.03
90°3.454.675.556.096.546.887.077.427.73
110°3.484.715.586.126.637.157.748.8910.08
120°3.334.555.445.996.486.997.609.6311.85
135°2.914.085.035.696.156.627.118.4612.37
150°2.413.474.415.185.796.226.657.6610.12
Run VMG2.093.013.824.545.215.706.096.898.76
Gybe Angles145.8°145.8°148.3°160.0°165.1°173.6°176.3°174.5°136.0°
APH ToD:670.0CDL: 5.982APH ToT: 0.8955CertNo:
BOAT
ClassF & F 65 STDDesignerJac de RidderBuilderF&F BoatsAge date01/2006Series date04/1992Offset fileh191.offData fileNED28FF
HULL
Length Overall6.499 mMaximum Beam2.510 mDraft1.240 mDisplacement891 kgDLR4.3255IMS DivisionSportboatDynamic Allowance0.230%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight300 kg(declared)Minimum weight170 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail13.3213.60Headsail Luffed12.5412.54Headsail FlyingSymmetric30.0330.03Asymmetric20.3825.45 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail3.90Storm Jib2.58Heavy Weather Jib6.95
SAIL LIMITS
Headsails5Spinnakers4
✱ Asymmetric SHALL NOT be tacked on the pole
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
ModocNED 28FF
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 VMG1786.31293.21063.8946.6879.2853.4850.5867.5890.2
52°1142.4846.1714.2651.8618.1600.0594.9592.0594.3
60°1072.0802.5686.0632.6601.7579.6570.4564.0562.1
75°1033.3778.0669.1618.1584.8556.3536.1520.1512.3
90°1044.8770.2648.2591.5550.5523.2509.0485.1465.4
110°1035.7764.7644.8588.6543.4503.4465.1404.8357.3
120°1082.5791.9661.3600.8555.3514.8473.6373.7303.7
135°1238.7883.3715.7632.8585.2544.0506.3425.4291.1
150°1491.51036.9815.7695.1622.2579.1541.1470.0355.9
Run VMG1719.11197.3941.9793.4690.7631.4590.9522.5410.9
Selected Courses
Windward / Leeward1751.71245.31002.9870.0784.9742.4720.7695.0650.6
All purpose1326.7959.5788.6701.0645.5612.3590.3557.0516.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward827.30.7252
All purpose670.00.8955
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6218
Downwind "popa"0.7824
70% up, 30% down "Ilhabela"0.6626
30% up, 70% down "Ilhabela-inverso"0.7261
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Predominantly Upwind731.50.8202
Predominantly Downwind677.30.8859
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low874.10.6864
Triple Number AP Medium667.70.8986
Triple Number AP High583.31.0287
Triple Number Windward/Leeward Low1173.60.5112
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Single Number Predominant Upwind761.70.7877
Single Number Predominant Reaching662.30.9059
Single Number Predominant Downwind704.60.8515
Predominant Upwind - Low1061.30.5654
Predominant Upwind - Low/Med808.50.7421
Predominant Upwind - Medium706.20.8496
Predominant Upwind - Med/High656.80.9135
Predominant Upwind - High639.40.9384
Predominant Downwind Low1048.30.5723
Predominant Downwind Low/Med773.90.7753
Predominant Downwind Medium652.60.9193
Predominant Downwind Med/High573.01.0472
Predominant Downwind High513.91.1675
Predominant Reaching Low937.20.6402
Predominant Reaching Low/Med712.90.8417
Predominant Reaching Medium618.80.9697
Predominant Reaching Med/High559.21.0729
Predominant Reaching High518.61.1570
SA/DSPL Upwind27.94SA/DSPL Downwind46.82
Scoring OptionTODTOT
5-Band Windward/Leeward Low1311.50.4575
5-Band Windward/Leeward Low/Med959.60.6253
5-Band Windward/Leeward Medium804.90.7454
5-Band Windward/Leeward Med/High725.40.8271
5-Band Windward/Leeward High691.80.8673
Windward/Leeward 60-40 Low1321.10.4542
Windward/Leeward 60-40 Low/Med973.40.6164
Windward/Leeward 60-40 Medium823.80.7283
Windward/Leeward 60-40 Med/High751.60.7983
Windward/Leeward 60-40 High727.10.8252
5-Band AP Low963.30.6228
5-Band AP Low/Med761.80.7876
5-Band AP Medium656.50.9139
5-Band AP Med/High593.01.0118
5-Band AP High555.71.0796
5-Band SF Bay Tour - Low1132.80.5297
5-Band SF Bay Tour - Low/Med920.20.6520
5-Band SF Bay Tour - Medium780.30.7689
5-Band SF Bay Tour - Med/High707.40.8482
5-Band SF Bay Tour - High673.50.8909
Chicago-Mac Upwind0.7614
Chicago-Mac All Purpose0.7920
Chicago-Mac Downwind0.8169
Bayview-Mac Cove Island0.5748
Bayview-Mac Shore0.5789
Harvest Moon Regatta565.71.0606
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance729.2
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating729.20.8228
FinRating, kevyt tuuli1286.80.7771
FinRating, kova tuuli550.90.9076
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8228
Triple Number Coastal/Long Distance Low0.6864
Triple Number Coastal/Long Distance Medium0.8987
Triple Number Coastal/Long Distance High1.0287
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7310
Triple Number Windward/Leeward High0.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
For information
General Purpose Handicap (GPH)755.1
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low874.1
Triple Number Coastal/Long Distance Medium667.6
Triple Number Coastal/Long Distance High583.3
Triple Number Windward/Leeward Low1124.0
Triple Number Windward/Leeward Medium820.8
Triple Number Windward/Leeward High716.5
Predominantly Upwind731.5
Predominantly Downwind677.3
Predominantly Reaching648.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6864
Triple Number Coastal/Long Distance Medium0.8987
Triple Number Coastal/Long Distance High1.0287
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7310
Triple Number Windward/Leeward High0.8374
Coastal/Long Distance0.8228
Predominantly Upwind0.8202
Predominantly Downwind0.8859
For information
General Purpose Handicap (GPH)755.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8955
Distanseseilas Trippeltall svak vind0.6864
Distanseseilas Trippeltall mellomvind0.8987
Distanseseilas Trippeltall sterk vind1.0287
Pølsebane Trippeltall svak vind0.5338
Pølsebane Trippeltall mellomvind0.7310
Pølsebane Trippeltall sterk vind0.8374
Motvind Singeltall0.8202
Medvind Singeltall0.8859
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Coastal/Long Distance729.20.8228
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind731.50.8202
Predominantly Downwind677.30.8859
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore663.90.9037
Cape Doctor Coastal528.71.1348
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6864
Triple Number Coastal/Long Distance Medium0.8987
Triple Number Coastal/Long Distance High1.0287
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7310
Triple Number Windward/Leeward High0.8374
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6864
Triple Number Coastal/Long Distance Medium0.8987
Triple Number Coastal/Long Distance High1.0287
Triple Number Windward/Leeward Low0.5338
Triple Number Windward/Leeward Medium0.7310
Triple Number Windward/Leeward High0.8374
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Predominantly Upwind731.50.8202
Predominantly Downwind677.30.8859
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.20.8228
Triple Number Coastal/Long Distance Low874.10.6864
Triple Number Coastal/Long Distance Medium667.60.8987
Triple Number Coastal/Long Distance High583.31.0287
Triple Number Windward/Leeward Low1124.00.5338
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1853.71240.5942.8786.7689.3636.1595.5517.4475.2
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low874.10.6864
Triple Number AP Medium667.70.8986
Triple Number AP High583.31.0287
Triple Number Windward/Leeward Low1173.60.5112
Triple Number Windward/Leeward Medium820.80.7310
Triple Number Windward/Leeward High716.50.8374
Single Number Predominant Upwind761.70.7877
Single Number Predominant Reaching662.30.9059
Single Number Predominant Downwind704.60.8515
Predominant Upwind - Low1061.30.5654
Predominant Upwind - Low/Med808.50.7421
Predominant Upwind - Medium706.20.8496
Predominant Upwind - Med/High656.80.9135
Predominant Upwind - High639.40.9384
Predominant Downwind Low1048.30.5723
Predominant Downwind Low/Med773.90.7753
Predominant Downwind Medium652.60.9193
Predominant Downwind Med/High573.01.0472
Predominant Downwind High513.91.1675
Predominant Reaching Low937.20.6402
Predominant Reaching Low/Med712.90.8417
Predominant Reaching Medium618.80.9697
Predominant Reaching Med/High559.21.0729
Predominant Reaching High518.61.1570
SA/DSPL Upwind27.94SA/DSPL Downwind46.82
Scoring OptionTODTOT
5-Band Windward/Leeward Low1311.50.4575
5-Band Windward/Leeward Low/Med959.60.6253
5-Band Windward/Leeward Medium804.90.7454
5-Band Windward/Leeward Med/High725.40.8271
5-Band Windward/Leeward High691.80.8673
Windward/Leeward 60-40 Low1321.10.4542
Windward/Leeward 60-40 Low/Med973.40.6164
Windward/Leeward 60-40 Medium823.80.7283
Windward/Leeward 60-40 Med/High751.60.7983
Windward/Leeward 60-40 High727.10.8252
5-Band AP Low963.30.6228
5-Band AP Low/Med761.80.7876
5-Band AP Medium656.50.9139
5-Band AP Med/High593.01.0118
5-Band AP High555.71.0796
5-Band SF Bay Tour - Low1132.80.5297
5-Band SF Bay Tour - Low/Med920.20.6520
5-Band SF Bay Tour - Medium780.30.7689
5-Band SF Bay Tour - Med/High707.40.8482
5-Band SF Bay Tour - High673.50.8909
Chicago-Mac Upwind0.7614
Chicago-Mac All Purpose0.7920
Chicago-Mac Downwind0.8169
Bayview-Mac Cove Island0.5748
Bayview-Mac Shore0.5789
Harvest Moon Regatta565.71.0606
Club Certificate2025
ModocNED 28FF
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassF & F 65 STDMeasurement19/08/2025HINPlan reviewHull constructionLightCarbon rudderNoLight stanchionsNoTrim tabNo
LOA6.499Max. Beam2.510Draft1.240Displacement891Wetted area9.83IMS L6.195LSM05.906Acc. length6.499Sink (kg/mm) 7.91
VCGD0.089VCGM0.145RM Rated (kg·m) 22.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight325Declared crew weight300
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionFixedInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P7.950IG7.175ISP7.480MDT10.067MDL10.090MDT2MDL2TLTaperMWGO
E2.800J2.420BAS0.890FSD0.000SFJ0.000SPL2.840WPLTPS3.170BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date20/08/2025CommentDisplacement is without outboard engine.
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
ModocNED 28FF
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.140.611.081.812.3413.32
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment13.536.98NoNo 12.5420250.050.300.591.171.762.387.16YesNo 8.46
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment17.547.547.544.764.8630.03
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment18.076.237.153.333.7888%20.38