Club Certificate2025
MareNED 8730
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 Angles45.0°45.0°42.8°41.4°40.3°39.5°39.2°39.1°40.0°
Beat VMG2.313.244.014.585.025.295.405.465.38
52°3.685.036.056.807.307.597.737.827.81
60°3.955.346.357.077.527.797.958.078.09
75°4.145.566.577.287.707.998.208.468.56
90°4.205.736.877.608.018.298.488.729.01
110°4.105.636.827.638.118.498.859.419.86
120°3.905.436.657.518.028.438.819.5810.34
135°3.434.856.077.057.718.168.569.3610.29
150°2.824.095.256.287.157.748.168.919.73
Run VMG2.443.544.545.456.256.917.448.238.92
Gybe Angles143.5°143.5°149.4°151.0°155.6°161.9°167.3°176.8°176.3°
APH ToD:548.1CDL: 10.042APH ToT: 1.0946CertNo:
BOAT
ClassDufour 425 GLDesignerU. FelciBuilderDufourAge date02/2007Series date01/2006Offset fileDUF425CL.OFFData fileNED8730
HULL
Length Overall12.600 mMaximum Beam4.170 mDraft2.127 mDisplacement9,454 kgDLR6.5163IMS DivisionCruiser/RacerDynamic Allowance0.370%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.460m
CREW
Maximum weight400 kg(declared)Minimum weight270 kg ✱ when appliedNon Manual PowerSailsCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail39.9540.90Headsail Luffed40.5240.52Headsail FlyingSymmetric111.99111.99Asymmetric88.6791.63 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail11.26Storm Jib11.00Heavy Weather Jib29.70
SAIL LIMITS
Headsails6
✱ One set on the forestay
Spinnakers5
✱ 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
MareNED 8730
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 VMG1556.51110.6898.3785.3717.1681.0666.4658.8668.6
52°978.9716.3594.7529.5493.1474.5465.5460.2461.2
60°911.1674.4566.9509.5478.6462.0452.6446.1445.2
75°868.9647.7548.1494.2467.5450.7439.2425.4420.5
90°856.6628.1524.0473.8449.4434.5424.7413.0399.5
110°878.4639.1527.9471.6443.7423.8406.9382.6365.2
120°922.5663.5541.4479.6448.6427.3408.5375.8348.1
135°1049.3742.3593.4511.0466.7441.1420.7384.7349.9
150°1275.5881.2686.2572.8503.5465.1441.3403.9369.9
Run VMG1473.41017.5792.4661.1575.7521.0483.6437.5403.7
Selected Courses
Windward / Leeward1514.41064.0845.3723.2646.4601.0575.0548.2536.2
All purpose1135.5811.4656.7572.9524.3496.1478.9458.4445.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward681.40.8805
All purpose548.11.0946
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7612
Downwind "popa"0.9357
70% up, 30% down "Ilhabela"0.8063
30% up, 70% down "Ilhabela-inverso"0.8755
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Predominantly Upwind596.91.0052
Predominantly Downwind557.11.0770
Custom scoring options for Canada
Scoring OptionTODTOT
TriNum AP Low734.00.8174
TriNum AP Med544.61.1018
TriNum AP High475.51.2618
TriNum W/L Low998.50.6009
TriNum W/L Med677.20.8860
TriNum W/L Hig571.41.0500
Predom. Upwind623.90.9617
Predom. Reaching544.51.1019
Predom. Downwind583.61.0280
Predom. Up Low900.50.6663
Predom. Up L/M670.30.8951
Predom. Up Med573.41.0464
Predom. Up M/H523.81.1454
Predom. Up High508.01.1810
Predom. Dn Low885.00.6780
Predom. Dn L/M640.90.9361
Predom. Dn Med533.41.1250
Predom. Dn M/H469.51.2780
Predom. Dn High437.21.3725
Predom. Rc Low784.20.7651
Predom. Rc L/M585.21.0253
Predom. Rc Med502.71.1936
Predom. Rc M/H457.41.3116
Predom. Rc High435.71.3769
SA/DSPL Upwind17.87SA/DSPL Downwind33.73
Scoring OptionTODTOT
5B W/L Low1122.10.5347
5B W/L L/M805.10.7452
5B W/L Med662.30.9060
5B W/L M/H580.91.0330
5B W/L High550.71.0895
W/L 60-40 Low1131.50.5303
W/L 60-40 L/M816.70.7347
W/L 60-40 Med676.50.8870
W/L 60-40 M/H599.01.0016
W/L 60-40 High572.91.0472
5B AP Low812.20.7388
5B AP L/M630.40.9518
5B AP Med534.91.1217
5B AP M/H482.21.2444
5B AP High459.71.3052
5B SF Bay Low964.40.6221
5B SF Bay L/M769.80.7794
5B SF Bay Med639.10.9388
5B SF Bay M/H566.91.0585
5B SF Bay High539.91.1112
Chicago-Mac Upwind0.9257
Chicago-Mac All Purpose0.9599
Chicago-Mac Downwind0.9863
BayMac Cove Island879.50.6822
BayMac Shore872.70.6875
Harvest Moon468.91.2795
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance599.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating599.51.0008
FinRating, kevyt tuuli1099.50.9095
FinRating, kova tuuli462.41.0813
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0008
Triple Number Coastal/Long Distance Low0.8174
Triple Number Coastal/Long Distance Medium1.1019
Triple Number Coastal/Long Distance High1.2618
Triple Number Windward/Leeward Low0.6285
Triple Number Windward/Leeward Medium0.8860
Triple Number Windward/Leeward High1.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
For information
General Purpose Handicap (GPH)621.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low734.0
Triple Number Coastal/Long Distance Medium544.5
Triple Number Coastal/Long Distance High475.5
Triple Number Windward/Leeward Low954.7
Triple Number Windward/Leeward Medium677.2
Triple Number Windward/Leeward High571.4
Predominantly Upwind596.9
Predominantly Downwind557.1
Predominantly Reaching531.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8174
Triple Number Coastal/Long Distance Medium1.1019
Triple Number Coastal/Long Distance High1.2618
Triple Number Windward/Leeward Low0.6285
Triple Number Windward/Leeward Medium0.8860
Triple Number Windward/Leeward High1.0500
Coastal/Long Distance1.0008
Predominantly Upwind1.0052
Predominantly Downwind1.0770
For information
General Purpose Handicap (GPH)621.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0946
Distanseseilas Trippeltall svak vind0.8174
Distanseseilas Trippeltall mellomvind1.1019
Distanseseilas Trippeltall sterk vind1.2618
Pølsebane Trippeltall svak vind0.6285
Pølsebane Trippeltall mellomvind0.8860
Pølsebane Trippeltall sterk vind1.0500
Motvind Singeltall1.0052
Medvind Singeltall1.0770
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Coastal/Long Distance599.51.0008
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind596.91.0052
Predominantly Downwind557.11.0770
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore539.81.1116
Cape Doctor Coastal449.41.3352
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8174
Triple Number Coastal/Long Distance Medium1.1019
Triple Number Coastal/Long Distance High1.2618
Triple Number Windward/Leeward Low0.6285
Triple Number Windward/Leeward Medium0.8860
Triple Number Windward/Leeward High1.0500
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8174
Triple Number Coastal/Long Distance Medium1.1019
Triple Number Coastal/Long Distance High1.2618
Triple Number Windward/Leeward Low0.6285
Triple Number Windward/Leeward Medium0.8860
Triple Number Windward/Leeward High1.0500
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Predominantly Upwind596.91.0052
Predominantly Downwind557.11.0770
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.51.0008
Triple Number Coastal/Long Distance Low734.00.8174
Triple Number Coastal/Long Distance Medium544.51.1019
Triple Number Coastal/Long Distance High475.51.2618
Triple Number Windward/Leeward Low954.70.6285
Triple Number Windward/Leeward Medium677.20.8860
Triple Number Windward/Leeward High571.41.0500
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1606.91059.4792.2648.4561.0515.1483.8438.1422.4
Custom scoring options for United States of America
Scoring OptionTODTOT
TriNum AP Low734.00.8174
TriNum AP Med544.61.1018
TriNum AP High475.51.2618
TriNum W/L Low998.50.6009
TriNum W/L Med677.20.8860
TriNum W/L Hig571.41.0500
Predom. Upwind623.90.9617
Predom. Reaching544.51.1019
Predom. Downwind583.61.0280
Predom. Up Low900.50.6663
Predom. Up L/M670.30.8951
Predom. Up Med573.41.0464
Predom. Up M/H523.81.1454
Predom. Up High508.01.1810
Predom. Dn Low885.00.6780
Predom. Dn L/M640.90.9361
Predom. Dn Med533.41.1250
Predom. Dn M/H469.51.2780
Predom. Dn High437.21.3725
Predom. Rc Low784.20.7651
Predom. Rc L/M585.21.0253
Predom. Rc Med502.71.1936
Predom. Rc M/H457.41.3116
Predom. Rc High435.71.3769
SA/DSPL Upwind17.87SA/DSPL Downwind33.73
Scoring OptionTODTOT
5B W/L Low1122.10.5347
5B W/L L/M805.10.7452
5B W/L Med662.30.9060
5B W/L M/H580.91.0330
5B W/L High550.71.0895
W/L 60-40 Low1131.50.5303
W/L 60-40 L/M816.70.7347
W/L 60-40 Med676.50.8870
W/L 60-40 M/H599.01.0016
W/L 60-40 High572.91.0472
5B AP Low812.20.7388
5B AP L/M630.40.9518
5B AP Med534.91.1217
5B AP M/H482.21.2444
5B AP High459.71.3052
5B SF Bay Low964.40.6221
5B SF Bay L/M769.80.7794
5B SF Bay Med639.10.9388
5B SF Bay M/H566.91.0585
5B SF Bay High539.91.1112
Chicago-Mac Upwind0.9257
Chicago-Mac All Purpose0.9599
Chicago-Mac Downwind0.9863
BayMac Cove Island879.50.6822
BayMac Shore872.70.6875
Harvest Moon468.91.2795
Club Certificate2025
MareNED 8730
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDufour 425 GLMeasurement11/03/2016HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.600Max. Beam4.170Draft2.127Displacement9,454Wetted area34.40IMS L11.412LSM011.320Acc. length12.600Sink (kg/mm) 27.07
VCGD0.224VCGM0.154RM Rated (kg·m) 246.1Limit of positive stability(°) N/AStability IndexN/ADefault crew weight821Declared crew weight400
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.460PBWPIPA0.0009
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P13.620IG14.830ISP15.290MDT10.130MDL10.235MDT2MDL2TLNo TaperMWGO
E4.720J4.730BAS1.680FSDFoilSFJ0.130SPL4.825WPLTPS5.650BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date08/04/2022
BALLAST
TANKS
IdDescriptionCapacityLCGVCGSp.WghtLevel
Sailing
116010.000.8400
INVENTORY
IdDescriptionWeight SailingLCGVCGGAIdDescriptionWeight SailingLCGVCGGA1Volvo Penta 55 PK   
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG1Fuel1602010.00Total deductible1710.00
OTHER ITEMSIdKindDescriptionWeightLCGVCG1Engine (IC)Volvo Penta 55 PKTotal deductible
Club Certificate2025
MareNED 8730
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20241.021.873.244.1639.95
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20240.070.721.402.824.245.9614.08NoNo 40.52
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment115.2215.2215.228.908.55111.9930/01/2019
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment015.4814.7515.126.638.6876%88.6728/03/2025
CRUISER/RACER REQUIREMENTS*
Accommodation length12.6 mTable area0.55 m²Headroom1.84 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity165 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity102 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.