Club 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 Angles43.1°43.1°41.1°38.7°37.8°37.7°37.7°38.2°40.5°
Beat VMG2.353.233.924.384.564.634.674.684.52
52°3.674.925.776.206.396.476.536.596.54
60°3.925.175.966.366.576.676.756.836.83
75°4.075.336.096.496.796.997.127.307.37
90°4.165.496.296.596.867.197.457.848.08
110°4.295.646.496.997.367.677.988.629.32
120°4.165.526.437.017.538.058.519.5610.83
135°3.624.996.056.707.287.938.7411.4413.23
150°2.994.245.316.116.697.187.6910.1413.56
Run VMG2.593.674.605.305.836.236.668.7911.74
Gybe Angles144.2°144.2°148.6°151.6°153.6°152.8°148.9°141.2°146.7°
APH ToD:593.8CDL: 7.181APH ToT: 1.0104CertNo: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 weight350 kg(declared)Minimum weight220 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.
Club 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 VMG1534.51115.0919.1821.9789.5777.3771.0769.2795.6
52°981.9732.3624.4580.2563.7556.4551.7546.6550.6
60°919.1696.1603.8566.3548.2539.5533.6526.7527.2
75°883.6675.0590.8554.3530.2514.8505.7493.4488.2
90°865.2655.7572.2546.6524.4500.9483.1459.4445.5
110°838.2637.9554.8514.8489.2469.5451.3417.8386.2
120°866.3652.0559.8513.2477.9447.4423.3376.5332.4
135°995.6720.9595.5537.5494.4454.1412.1314.8272.1
150°1204.3848.8678.0588.7537.8501.5467.9354.9265.6
Run VMG1390.7980.1782.9678.9617.4577.7540.2409.8306.7
Selected Courses
Windward / Leeward1461.91047.6851.0750.4703.5677.5655.6589.5551.1
All purpose1104.7809.8675.9612.1578.7556.4537.6493.3468.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward729.10.8229
All purpose593.81.0104
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7044
Downwind "popa"0.9156
70% up, 30% down "Ilhabela"0.7567
30% up, 70% down "Ilhabela-inverso"0.8400
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Predominantly Upwind651.10.9215
Predominantly Downwind590.41.0163
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low742.90.8077
Triple Number AP Medium592.41.0128
Triple Number AP High525.71.1414
Triple Number Windward/Leeward Low990.60.6057
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Single Number Predominant Upwind674.60.8895
Single Number Predominant Reaching583.81.0277
Single Number Predominant Downwind608.70.9858
Predominant Upwind - Low904.90.6631
Predominant Upwind - Low/Med704.60.8516
Predominant Upwind - Medium633.70.9468
Predominant Upwind - Med/High595.71.0072
Predominant Upwind - High572.11.0488
Predominant Downwind Low869.70.6899
Predominant Downwind Low/Med661.60.9069
Predominant Downwind Medium575.31.0429
Predominant Downwind Med/High504.61.1890
Predominant Downwind High434.31.3816
Predominant Reaching Low788.00.7614
Predominant Reaching Low/Med620.50.9670
Predominant Reaching Medium555.21.0806
Predominant Reaching Med/High503.01.1928
Predominant Reaching High459.81.3050
SA/DSPL Upwind26.92SA/DSPL Downwind65.45
Scoring OptionTODTOT
5-Band Windward/Leeward Low1102.20.5444
5-Band Windward/Leeward Low/Med822.70.7293
5-Band Windward/Leeward Medium715.20.8390
5-Band Windward/Leeward Med/High652.10.9201
5-Band Windward/Leeward High594.31.0096
Windward/Leeward 60-40 Low1115.90.5377
Windward/Leeward 60-40 Low/Med837.10.7168
Windward/Leeward 60-40 Medium732.50.8191
Windward/Leeward 60-40 Med/High676.30.8872
Windward/Leeward 60-40 High630.20.9520
5-Band AP Low809.70.7410
5-Band AP Low/Med658.80.9108
5-Band AP Medium585.21.0254
5-Band AP Med/High536.71.1179
5-Band AP High496.71.2080
5-Band SF Bay Tour - Low956.20.6275
5-Band SF Bay Tour - Low/Med789.20.7603
5-Band SF Bay Tour - Medium689.80.8698
5-Band SF Bay Tour - Med/High631.20.9505
5-Band SF Bay Tour - High581.11.0325
Chicago-Mac Upwind0.8651
Chicago-Mac All Purpose0.9072
Chicago-Mac Downwind0.9483
Bayview-Mac Cove Island0.6766
Bayview-Mac Shore0.6804
Harvest Moon Regatta508.21.1806
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance644.2
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating638.40.9398
FinRating, kevyt tuuli1079.20.9266
FinRating, kova tuuli497.81.0044
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9314
Triple Number Coastal/Long Distance Low0.8077
Triple Number Coastal/Long Distance Medium1.0129
Triple Number Coastal/Long Distance High1.1414
Triple Number Windward/Leeward Low0.6321
Triple Number Windward/Leeward Medium0.8277
Triple Number Windward/Leeward High0.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
For information
General Purpose Handicap (GPH)662.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low742.9
Triple Number Coastal/Long Distance Medium592.4
Triple Number Coastal/Long Distance High525.7
Triple Number Windward/Leeward Low949.2
Triple Number Windward/Leeward Medium724.9
Triple Number Windward/Leeward High636.3
Predominantly Upwind651.1
Predominantly Downwind590.4
Predominantly Reaching571.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8077
Triple Number Coastal/Long Distance Medium1.0129
Triple Number Coastal/Long Distance High1.1414
Triple Number Windward/Leeward Low0.6321
Triple Number Windward/Leeward Medium0.8277
Triple Number Windward/Leeward High0.9430
Coastal/Long Distance0.9314
Predominantly Upwind0.9215
Predominantly Downwind1.0163
For information
General Purpose Handicap (GPH)662.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0104
Distanseseilas Trippeltall svak vind0.8077
Distanseseilas Trippeltall mellomvind1.0129
Distanseseilas Trippeltall sterk vind1.1414
Pølsebane Trippeltall svak vind0.6321
Pølsebane Trippeltall mellomvind0.8277
Pølsebane Trippeltall sterk vind0.9430
Motvind Singeltall0.9215
Medvind Singeltall1.0163
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Coastal/Long Distance644.20.9314
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind651.10.9215
Predominantly Downwind590.41.0163
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore562.61.0664
Cape Doctor Coastal476.01.2606
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8077
Triple Number Coastal/Long Distance Medium1.0129
Triple Number Coastal/Long Distance High1.1414
Triple Number Windward/Leeward Low0.6321
Triple Number Windward/Leeward Medium0.8277
Triple Number Windward/Leeward High0.9430
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8077
Triple Number Coastal/Long Distance Medium1.0129
Triple Number Coastal/Long Distance High1.1414
Triple Number Windward/Leeward Low0.6321
Triple Number Windward/Leeward Medium0.8277
Triple Number Windward/Leeward High0.9430
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Predominantly Upwind651.10.9215
Predominantly Downwind590.41.0163
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance644.20.9314
Triple Number Coastal/Long Distance Low742.90.8077
Triple Number Coastal/Long Distance Medium592.41.0129
Triple Number Coastal/Long Distance High525.71.1414
Triple Number Windward/Leeward Low949.20.6321
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1536.31040.8801.5682.2616.5577.1542.3471.1440.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low742.90.8077
Triple Number AP Medium592.41.0128
Triple Number AP High525.71.1414
Triple Number Windward/Leeward Low990.60.6057
Triple Number Windward/Leeward Medium724.90.8277
Triple Number Windward/Leeward High636.30.9430
Single Number Predominant Upwind674.60.8895
Single Number Predominant Reaching583.81.0277
Single Number Predominant Downwind608.70.9858
Predominant Upwind - Low904.90.6631
Predominant Upwind - Low/Med704.60.8516
Predominant Upwind - Medium633.70.9468
Predominant Upwind - Med/High595.71.0072
Predominant Upwind - High572.11.0488
Predominant Downwind Low869.70.6899
Predominant Downwind Low/Med661.60.9069
Predominant Downwind Medium575.31.0429
Predominant Downwind Med/High504.61.1890
Predominant Downwind High434.31.3816
Predominant Reaching Low788.00.7614
Predominant Reaching Low/Med620.50.9670
Predominant Reaching Medium555.21.0806
Predominant Reaching Med/High503.01.1928
Predominant Reaching High459.81.3050
SA/DSPL Upwind26.92SA/DSPL Downwind65.45
Scoring OptionTODTOT
5-Band Windward/Leeward Low1102.20.5444
5-Band Windward/Leeward Low/Med822.70.7293
5-Band Windward/Leeward Medium715.20.8390
5-Band Windward/Leeward Med/High652.10.9201
5-Band Windward/Leeward High594.31.0096
Windward/Leeward 60-40 Low1115.90.5377
Windward/Leeward 60-40 Low/Med837.10.7168
Windward/Leeward 60-40 Medium732.50.8191
Windward/Leeward 60-40 Med/High676.30.8872
Windward/Leeward 60-40 High630.20.9520
5-Band AP Low809.70.7410
5-Band AP Low/Med658.80.9108
5-Band AP Medium585.21.0254
5-Band AP Med/High536.71.1179
5-Band AP High496.71.2080
5-Band SF Bay Tour - Low956.20.6275
5-Band SF Bay Tour - Low/Med789.20.7603
5-Band SF Bay Tour - Medium689.80.8698
5-Band SF Bay Tour - Med/High631.20.9505
5-Band SF Bay Tour - High581.11.0325
Chicago-Mac Upwind0.8651
Chicago-Mac All Purpose0.9072
Chicago-Mac Downwind0.9483
Bayview-Mac Cove Island0.6766
Bayview-Mac Shore0.6804
Harvest Moon Regatta508.21.1806
Club 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 L7.207LSM06.831Acc. length8.032Sink (kg/mm) 9.06
VCGD-0.150VCGM-0.080RM Rated (kg·m) 27.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight400Declared crew weight350
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
Club 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.