Double HandedClub Certificate2025
FOOLPROOFNED 3161
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 Angles42.4°42.4°40.8°40.5°41.1°41.8°42.6°44.5°49.6°
Beat VMG2.263.023.543.783.843.843.823.703.48
52°3.484.565.225.545.675.725.755.725.58
60°3.694.795.435.755.915.986.026.046.00
75°3.844.985.625.966.186.326.416.526.53
90°3.855.035.746.106.326.556.726.957.06
110°3.845.075.846.276.616.887.077.407.70
120°3.654.895.736.226.626.987.327.898.39
135°3.184.375.315.976.416.827.258.3210.27
150°2.573.694.695.506.066.476.877.829.55
Run VMG2.223.204.074.815.465.946.337.088.27
Gybe Angles147.1°147.1°152.1°157.9°165.1°172.7°177.2°176.3°147.7°
APH ToD:671.9CDL: 5.683APH ToT: 0.8930CertNo:5293
BOAT
Class1/4 TonDesignerJ.FaurouxBuilderCaparrosAge date05/1981Series date01/1981Offset filened3161E.OFFData fileNED3161
HULL
Length Overall7.792 mMaximum Beam2.996 mDraft1.481 mDisplacement1,412 kgDLR6.3834IMS DivisionSportboatDynamic Allowance0.190%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail19.4819.88Headsail Luffed11.2111.21Headsail FlyingSymmetric35.8335.83Asymmetric
STORM SAIL AREAS (m²)
Trysail5.75Storm Jib3.53Heavy Weather Jib9.53
SAIL LIMITS
Headsails5
✱ Woven polyester sails
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.
Double HandedClub Certificate2025
FOOLPROOFNED 3161
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 VMG1593.01190.21017.9953.0937.5938.0942.9972.41034.8
52°1034.2789.0689.7649.8634.4628.8626.0629.4645.3
60°975.6750.9662.6626.0609.6602.4597.8595.7599.9
75°936.4723.4640.5603.6582.8569.4561.4552.1550.9
90°935.1715.3627.1590.7569.8549.8535.4518.2510.1
110°936.5710.3616.4573.9544.5523.4509.0486.3467.8
120°986.4736.2627.9578.6543.9515.7491.9456.3429.1
135°1133.3823.4678.5602.7561.7527.6496.6432.9350.5
150°1399.9975.6768.3655.1594.3556.8524.3460.1377.1
Run VMG1619.81126.5885.4748.7659.2605.9568.7508.6435.4
Selected Courses
Windward / Leeward1603.21158.3951.7850.9798.3771.9755.8740.5735.1
All purpose1206.6892.4752.3686.7653.2633.5619.5601.4589.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward829.80.7231
All purpose671.90.8930
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6041
Downwind "popa"0.8230
70% up, 30% down "Ilhabela"0.6565
30% up, 70% down "Ilhabela-inverso"0.7423
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Predominantly Upwind740.00.8108
Predominantly Downwind660.60.9082
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low822.30.7296
Triple Number AP Medium667.80.8985
Triple Number AP High616.20.9737
Triple Number Windward/Leeward Low1100.10.5454
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Single Number Predominant Upwind766.40.7829
Single Number Predominant Reaching656.20.9143
Single Number Predominant Downwind687.00.8734
Predominant Upwind - Low982.50.6107
Predominant Upwind - Low/Med786.70.7626
Predominant Upwind - Medium722.90.8300
Predominant Upwind - Med/High697.50.8603
Predominant Upwind - High693.50.8652
Predominant Downwind Low977.50.6138
Predominant Downwind Low/Med740.10.8107
Predominant Downwind Medium641.20.9357
Predominant Downwind Med/High577.51.0390
Predominant Downwind High533.81.1240
Predominant Reaching Low870.00.6897
Predominant Reaching Low/Med689.40.8703
Predominant Reaching Medium621.10.9660
Predominant Reaching Med/High577.91.0382
Predominant Reaching High550.31.0904
SA/DSPL Upwind24.36SA/DSPL Downwind43.89
Scoring OptionTODTOT
5-Band Windward/Leeward Low1218.70.4923
5-Band Windward/Leeward Low/Med923.90.6494
5-Band Windward/Leeward Medium811.90.7390
5-Band Windward/Leeward Med/High759.50.7900
5-Band Windward/Leeward High742.20.8084
Windward/Leeward 60-40 Low1224.50.4900
Windward/Leeward 60-40 Low/Med940.90.6377
Windward/Leeward 60-40 Medium838.90.7152
Windward/Leeward 60-40 Med/High797.00.7529
Windward/Leeward 60-40 High789.40.7601
5-Band AP Low896.20.6695
5-Band AP Low/Med735.20.8161
5-Band AP Medium660.90.9079
5-Band AP Med/High621.60.9652
5-Band AP High602.50.9959
5-Band SF Bay Tour - Low1056.90.5677
5-Band SF Bay Tour - Low/Med887.60.6759
5-Band SF Bay Tour - Medium789.80.7597
5-Band SF Bay Tour - Med/High745.10.8053
5-Band SF Bay Tour - High729.30.8227
Chicago-Mac Upwind0.7651
Chicago-Mac All Purpose0.8057
Chicago-Mac Downwind0.8438
Bayview-Mac Cove Island0.6083
Bayview-Mac Shore0.6131
Harvest Moon Regatta570.91.0510
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance729.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8229
Triple Number Coastal/Long Distance Low0.7296
Triple Number Coastal/Long Distance Medium0.8986
Triple Number Coastal/Long Distance High0.9737
Triple Number Windward/Leeward Low0.5687
Triple Number Windward/Leeward Medium0.7299
Triple Number Windward/Leeward High0.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
For information
General Purpose Handicap (GPH)744.5
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low822.4
Triple Number Coastal/Long Distance Medium667.7
Triple Number Coastal/Long Distance High616.2
Triple Number Windward/Leeward Low1055.0
Triple Number Windward/Leeward Medium822.0
Triple Number Windward/Leeward High754.1
Predominantly Upwind740.0
Predominantly Downwind660.6
Predominantly Reaching640.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7296
Triple Number Coastal/Long Distance Medium0.8986
Triple Number Coastal/Long Distance High0.9737
Triple Number Windward/Leeward Low0.5687
Triple Number Windward/Leeward Medium0.7299
Triple Number Windward/Leeward High0.7956
Coastal/Long Distance0.8229
Predominantly Upwind0.8108
Predominantly Downwind0.9082
For information
General Purpose Handicap (GPH)744.5
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8930
Distanseseilas Trippeltall svak vind0.7296
Distanseseilas Trippeltall mellomvind0.8986
Distanseseilas Trippeltall sterk vind0.9737
Pølsebane Trippeltall svak vind0.5687
Pølsebane Trippeltall mellomvind0.7299
Pølsebane Trippeltall sterk vind0.7956
Motvind Singeltall0.8108
Medvind Singeltall0.9082
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Coastal/Long Distance729.10.8229
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind740.00.8108
Predominantly Downwind660.60.9082
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore736.70.8144
Cape Doctor Coastal593.21.0115
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7296
Triple Number Coastal/Long Distance Medium0.8986
Triple Number Coastal/Long Distance High0.9737
Triple Number Windward/Leeward Low0.5687
Triple Number Windward/Leeward Medium0.7299
Triple Number Windward/Leeward High0.7956
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7296
Triple Number Coastal/Long Distance Medium0.8986
Triple Number Coastal/Long Distance High0.9737
Triple Number Windward/Leeward Low0.5687
Triple Number Windward/Leeward Medium0.7299
Triple Number Windward/Leeward High0.7956
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Predominantly Upwind740.00.8108
Predominantly Downwind660.60.9082
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.10.8229
Triple Number Coastal/Long Distance Low822.40.7296
Triple Number Coastal/Long Distance Medium667.70.8986
Triple Number Coastal/Long Distance High616.20.9737
Triple Number Windward/Leeward Low1055.00.5687
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1695.91155.2895.7769.7699.3658.1622.3560.7544.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low822.30.7296
Triple Number AP Medium667.80.8985
Triple Number AP High616.20.9737
Triple Number Windward/Leeward Low1100.10.5454
Triple Number Windward/Leeward Medium822.00.7299
Triple Number Windward/Leeward High754.10.7956
Single Number Predominant Upwind766.40.7829
Single Number Predominant Reaching656.20.9143
Single Number Predominant Downwind687.00.8734
Predominant Upwind - Low982.50.6107
Predominant Upwind - Low/Med786.70.7626
Predominant Upwind - Medium722.90.8300
Predominant Upwind - Med/High697.50.8603
Predominant Upwind - High693.50.8652
Predominant Downwind Low977.50.6138
Predominant Downwind Low/Med740.10.8107
Predominant Downwind Medium641.20.9357
Predominant Downwind Med/High577.51.0390
Predominant Downwind High533.81.1240
Predominant Reaching Low870.00.6897
Predominant Reaching Low/Med689.40.8703
Predominant Reaching Medium621.10.9660
Predominant Reaching Med/High577.91.0382
Predominant Reaching High550.31.0904
SA/DSPL Upwind24.36SA/DSPL Downwind43.89
Scoring OptionTODTOT
5-Band Windward/Leeward Low1218.70.4923
5-Band Windward/Leeward Low/Med923.90.6494
5-Band Windward/Leeward Medium811.90.7390
5-Band Windward/Leeward Med/High759.50.7900
5-Band Windward/Leeward High742.20.8084
Windward/Leeward 60-40 Low1224.50.4900
Windward/Leeward 60-40 Low/Med940.90.6377
Windward/Leeward 60-40 Medium838.90.7152
Windward/Leeward 60-40 Med/High797.00.7529
Windward/Leeward 60-40 High789.40.7601
5-Band AP Low896.20.6695
5-Band AP Low/Med735.20.8161
5-Band AP Medium660.90.9079
5-Band AP Med/High621.60.9652
5-Band AP High602.50.9959
5-Band SF Bay Tour - Low1056.90.5677
5-Band SF Bay Tour - Low/Med887.60.6759
5-Band SF Bay Tour - Medium789.80.7597
5-Band SF Bay Tour - Med/High745.10.8053
5-Band SF Bay Tour - High729.30.8227
Chicago-Mac Upwind0.7651
Chicago-Mac All Purpose0.8057
Chicago-Mac Downwind0.8438
Bayview-Mac Cove Island0.6083
Bayview-Mac Shore0.6131
Harvest Moon Regatta570.91.0510
Double HandedClub Certificate2025
FOOLPROOFNED 3161
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
Class1/4 TonMeasurement29/05/1990HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA7.792Max. Beam2.996Draft1.481Displacement1,412Wetted area11.16IMS L6.292LSM06.048Acc. length7.792Sink (kg/mm) 8.26
VCGD0.176VCGM0.138RM Rated (kg·m) 24.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P9.550IG8.350ISP8.460MDT10.073MDL10.120MDT20.050MDL20.070TL2.800MW0.105GO0.120
E3.435J2.500BAS1.250FSD0.025SFJ0.000SPL2.580WPLTPSBD0.110MWT75.00MCG3.500
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.147Flotation Date29/05/1990CommentBB motor aan spiegel bij meting
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
FOOLPROOFNED 3161
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20230.140.711.282.182.9119.48
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20230.070.380.711.361.992.608.35NoNo 11.21
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment20238.008.008.005.385.3535.83
CRUISER/RACER REQUIREMENTS*
Accommodation length7.8 mTable area0.22 m²Headroom1.40 mMinimum number of berths2Personal gear stowage0.08 m³Fresh water capacity18 lMinimum number of seats in cockpit2Food stowage0.12 m³Fuel capacity20 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.