Double HandedClub Certificate2025
JilboNOR 477
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 Angles42.7°42.7°40.8°39.9°40.0°40.4°40.6°42.3°47.9°
Beat VMG2.403.283.904.154.224.244.254.133.79
52°3.724.965.756.036.136.186.216.195.99
60°3.965.215.966.236.346.406.456.466.35
75°4.155.396.116.446.636.756.846.936.94
90°4.265.456.096.516.817.057.237.477.62
110°4.355.666.426.797.087.347.598.058.51
120°4.235.576.436.947.357.698.048.739.48
135°3.695.076.116.777.378.028.7910.3211.83
150°3.044.305.386.186.797.337.9610.4113.57
Run VMG2.633.734.665.365.906.356.899.0211.75
Gybe Angles144.0°144.0°148.5°152.0°152.8°150.7°147.4°145.0°149.2°
APH ToD:610.2CDL: 6.605APH ToT: 0.9834CertNo:667217
BOAT
ClassJ/80DesignerRodJohnstoneBuilderJ-BoatsAge date01/2002Series date01/1992Offset fileJ80.OD+.offData file667217
HULL
Length Overall8.032 mMaximum Beam2.488 mDraft1.501 mDisplacement1,466 kgDLR4.5987IMS DivisionSportboatDynamic Allowance0.150%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight150 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.20 m
SAIL AREAS (m²)
MeasuredRatedMainsail20.9821.68Headsail Luffed13.8113.81Headsail FlyingSymmetricAsymmetric63.6063.60 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail6.01Storm Jib4.57Heavy Weather Jib12.34
SAIL LIMITS
Headsails5
✱ One set on the forestay
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
JilboNOR 477
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 VMG1501.71098.0922.5868.3853.0849.3847.7871.4949.8
52°968.1725.9626.2597.5587.6582.8579.8581.9601.1
60°908.6691.0604.4577.8567.8562.1558.3557.1566.7
75°867.8667.6589.5559.0542.9533.5526.3519.2518.5
90°844.5660.7591.4553.1528.5510.8498.0482.0472.7
110°828.2636.0560.6530.1508.6490.5474.5447.3422.8
120°851.7645.8559.7518.6490.0468.0448.0412.6379.7
135°975.1709.7589.0531.6488.8448.7409.7349.0304.4
150°1185.9836.3669.1582.6530.1491.2452.5345.7265.3
Run VMG1368.7965.7772.6671.4610.0566.9522.5399.2306.4
Selected Courses
Windward / Leeward1434.81031.8847.5769.8731.5708.1685.1635.3628.1
All purpose1083.9800.8676.5625.0597.3578.3560.9530.1523.4
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward751.60.7982
All purpose610.20.9834
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6656
Downwind "popa"0.9316
70% up, 30% down "Ilhabela"0.7280
30% up, 70% down "Ilhabela-inverso"0.8319
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Predominantly Upwind673.00.8916
Predominantly Downwind592.21.0131
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low738.70.8123
Triple Number AP Medium608.50.9861
Triple Number AP High553.71.0836
Triple Number Windward/Leeward Low981.50.6113
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Single Number Predominant Upwind697.80.8598
Single Number Predominant Reaching593.31.0112
Single Number Predominant Downwind612.10.9803
Predominant Upwind - Low895.40.6701
Predominant Upwind - Low/Med715.60.8385
Predominant Upwind - Medium659.60.9097
Predominant Upwind - Med/High632.20.9491
Predominant Upwind - High624.30.9611
Predominant Downwind Low859.00.6985
Predominant Downwind Low/Med660.70.9081
Predominant Downwind Medium578.81.0367
Predominant Downwind Med/High512.81.1701
Predominant Downwind High456.31.3149
Predominant Reaching Low781.70.7675
Predominant Reaching Low/Med625.40.9594
Predominant Reaching Medium564.51.0629
Predominant Reaching Med/High519.71.1544
Predominant Reaching High490.21.2240
SA/DSPL Upwind26.92SA/DSPL Downwind65.45
Scoring OptionTODTOT
5-Band Windward/Leeward Low1086.60.5522
5-Band Windward/Leeward Low/Med830.10.7228
5-Band Windward/Leeward Medium739.70.8111
5-Band Windward/Leeward Med/High684.50.8766
5-Band Windward/Leeward High642.70.9336
Windward/Leeward 60-40 Low1100.30.5453
Windward/Leeward 60-40 Low/Med847.90.7076
Windward/Leeward 60-40 Medium763.80.7855
Windward/Leeward 60-40 Med/High718.10.8355
Windward/Leeward 60-40 High690.30.8692
5-Band AP Low801.40.7487
5-Band AP Low/Med665.00.9023
5-Band AP Medium602.30.9962
5-Band AP Med/High561.71.0682
5-Band AP High534.31.1230
5-Band SF Bay Tour - Low944.20.6354
5-Band SF Bay Tour - Low/Med797.60.7523
5-Band SF Bay Tour - Medium715.70.8384
5-Band SF Bay Tour - Med/High666.80.8998
5-Band SF Bay Tour - High634.40.9458
Chicago-Mac Upwind0.8404
Chicago-Mac All Purpose0.8921
Chicago-Mac Downwind0.9456
Bayview-Mac Cove Island0.6781
Bayview-Mac Shore0.6819
Harvest Moon Regatta517.91.1585
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance660.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating653.90.9176
FinRating, kevyt tuuli1064.10.9397
FinRating, kova tuuli536.20.9324
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9085
Triple Number Coastal/Long Distance Low0.8123
Triple Number Coastal/Long Distance Medium0.9862
Triple Number Coastal/Long Distance High1.0836
Triple Number Windward/Leeward Low0.6385
Triple Number Windward/Leeward Medium0.8020
Triple Number Windward/Leeward High0.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
For information
General Purpose Handicap (GPH)674.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low738.6
Triple Number Coastal/Long Distance Medium608.4
Triple Number Coastal/Long Distance High553.7
Triple Number Windward/Leeward Low939.7
Triple Number Windward/Leeward Medium748.1
Triple Number Windward/Leeward High672.2
Predominantly Upwind673.0
Predominantly Downwind592.2
Predominantly Reaching577.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8123
Triple Number Coastal/Long Distance Medium0.9862
Triple Number Coastal/Long Distance High1.0836
Triple Number Windward/Leeward Low0.6385
Triple Number Windward/Leeward Medium0.8020
Triple Number Windward/Leeward High0.8926
Coastal/Long Distance0.9085
Predominantly Upwind0.8916
Predominantly Downwind1.0131
For information
General Purpose Handicap (GPH)674.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9834
Distanseseilas Trippeltall svak vind0.8123
Distanseseilas Trippeltall mellomvind0.9862
Distanseseilas Trippeltall sterk vind1.0836
Pølsebane Trippeltall svak vind0.6385
Pølsebane Trippeltall mellomvind0.8020
Pølsebane Trippeltall sterk vind0.8926
Motvind Singeltall0.8916
Medvind Singeltall1.0131
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Coastal/Long Distance660.40.9085
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind673.00.8916
Predominantly Downwind592.21.0131
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore630.30.9520
Cape Doctor Coastal525.41.1420
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8123
Triple Number Coastal/Long Distance Medium0.9862
Triple Number Coastal/Long Distance High1.0836
Triple Number Windward/Leeward Low0.6385
Triple Number Windward/Leeward Medium0.8020
Triple Number Windward/Leeward High0.8926
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8123
Triple Number Coastal/Long Distance Medium0.9862
Triple Number Coastal/Long Distance High1.0836
Triple Number Windward/Leeward Low0.6385
Triple Number Windward/Leeward Medium0.8020
Triple Number Windward/Leeward High0.8926
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Predominantly Upwind673.00.8916
Predominantly Downwind592.21.0131
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance660.40.9085
Triple Number Coastal/Long Distance Low738.60.8123
Triple Number Coastal/Long Distance Medium608.40.9862
Triple Number Coastal/Long Distance High553.71.0836
Triple Number Windward/Leeward Low939.70.6385
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1503.01025.2799.3697.9638.4601.0565.6500.4483.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low738.70.8123
Triple Number AP Medium608.50.9861
Triple Number AP High553.71.0836
Triple Number Windward/Leeward Low981.50.6113
Triple Number Windward/Leeward Medium748.10.8020
Triple Number Windward/Leeward High672.20.8926
Single Number Predominant Upwind697.80.8598
Single Number Predominant Reaching593.31.0112
Single Number Predominant Downwind612.10.9803
Predominant Upwind - Low895.40.6701
Predominant Upwind - Low/Med715.60.8385
Predominant Upwind - Medium659.60.9097
Predominant Upwind - Med/High632.20.9491
Predominant Upwind - High624.30.9611
Predominant Downwind Low859.00.6985
Predominant Downwind Low/Med660.70.9081
Predominant Downwind Medium578.81.0367
Predominant Downwind Med/High512.81.1701
Predominant Downwind High456.31.3149
Predominant Reaching Low781.70.7675
Predominant Reaching Low/Med625.40.9594
Predominant Reaching Medium564.51.0629
Predominant Reaching Med/High519.71.1544
Predominant Reaching High490.21.2240
SA/DSPL Upwind26.92SA/DSPL Downwind65.45
Scoring OptionTODTOT
5-Band Windward/Leeward Low1086.60.5522
5-Band Windward/Leeward Low/Med830.10.7228
5-Band Windward/Leeward Medium739.70.8111
5-Band Windward/Leeward Med/High684.50.8766
5-Band Windward/Leeward High642.70.9336
Windward/Leeward 60-40 Low1100.30.5453
Windward/Leeward 60-40 Low/Med847.90.7076
Windward/Leeward 60-40 Medium763.80.7855
Windward/Leeward 60-40 Med/High718.10.8355
Windward/Leeward 60-40 High690.30.8692
5-Band AP Low801.40.7487
5-Band AP Low/Med665.00.9023
5-Band AP Medium602.30.9962
5-Band AP Med/High561.71.0682
5-Band AP High534.31.1230
5-Band SF Bay Tour - Low944.20.6354
5-Band SF Bay Tour - Low/Med797.60.7523
5-Band SF Bay Tour - Medium715.70.8384
5-Band SF Bay Tour - Med/High666.80.8998
5-Band SF Bay Tour - High634.40.9458
Chicago-Mac Upwind0.8404
Chicago-Mac All Purpose0.8921
Chicago-Mac Downwind0.9456
Bayview-Mac Cove Island0.6781
Bayview-Mac Shore0.6819
Harvest Moon Regatta517.91.1585
Double HandedClub Certificate2025
JilboNOR 477
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ/80MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA8.032Max. Beam2.488Draft1.501Displacement1,466Wetted area11.88IMS L7.080LSM06.831Acc. length8.032Sink (kg/mm) 9.06
VCGD-0.150VCGM-0.080RM Rated (kg·m) 27.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight150
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P9.000IG9.560ISP10.070MDT10.080MDL10.130MDT20.063MDL20.100TL0.380MW0.130GO0.130
E3.810J2.900BAS1.300FSD0.025SFJ0.000SPL0.000WPLTPS4.800BD0.000MWT51.70MCG3.700
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.150Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
JilboNOR 477
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment336-2021031115250.280.881.532.523.2420.9811/03/2021Luff 8,99 Leech 9,64
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment441-2020102214380.070.410.781.472.242.919.27YesNo 13.8122/10/2020
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment441-20201022143912.109.5510.837.047.0999%63.6022/10/2020
CRUISER/RACER REQUIREMENTS*
Accommodation length8.0 mTable area0.33 m²Headroom1.40 mMinimum number of berths3Personal gear stowage0.12 m³Fresh water capacity30 lMinimum number of seats in cockpit3Food stowage0.18 m³Fuel capacity20 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.