Club Certificate2025
RHN REGATTA 5CHN 55070
ORC
Central Rating Office
Issuing certificates for
CHINA
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 Angles42.3°42.3°40.1°38.5°37.3°36.6°36.0°35.6°36.0°
Beat VMG3.184.385.305.876.196.386.516.696.74
52°4.926.627.788.398.698.868.989.149.24
60°5.246.968.078.628.929.109.239.429.54
75°5.487.208.268.809.149.409.629.9110.12
90°5.317.058.188.809.209.549.8610.3810.75
110°5.167.038.379.089.569.9010.2210.7911.30
120°4.966.868.299.059.6210.1610.6111.3512.09
135°4.316.147.688.659.279.8610.4811.9713.65
150°3.655.156.457.648.569.139.6610.8912.56
Run VMG3.164.465.596.617.448.088.669.6810.88
Gybe Angles142.4°142.4°144.2°146.7°152.3°159.5°170.5°174.8°151.0°
APH ToD:451.3CDL: 13.800APH ToT: 1.3296CertNo:
BOAT
ClassDUBOIS 50DesignerDubois Naval ArchitectsBuilderAge date01/2015Series date01/2015Offset fileDUBOIS50_DV.offData fileCHN55070
HULL
Length Overall14.990 mMaximum Beam4.360 mDraft3.302 mDisplacement13,325 kgDLR4.5139IMS DivisionCruiser/RacerDynamic Allowance0.090%Age Allowance0.325%
PROPELLER
InstallationShaft exposedTypeFolding 3 bladesDiameterm
CREW
Maximum weight1,190 kg(declared)Minimum weight1,012 kg ✱ when appliedNon Manual PowerRigCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail87.4690.27Headsail Luffed60.0960.09Headsail FlyingSymmetricAsymmetric230.06230.06 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail23.34Storm Jib19.31Heavy Weather Jib52.13
SAIL LIMITS
Headsails8Spinnakers6
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
RHN REGATTA 5CHN 55070
ORC
Central Rating Office
Issuing certificates for
CHINA
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 VMG1131.0821.2678.9612.8582.0564.3552.6538.0534.2
52°731.2543.8462.5429.0414.3406.4400.9393.7389.7
60°686.9517.4446.2417.4403.7395.7390.1382.1377.2
75°657.0500.1435.9408.9393.8382.8374.4363.3355.8
90°677.4510.7440.3409.3391.5377.3365.3346.9334.9
110°697.1511.7429.9396.6376.6363.5352.3333.8318.5
120°726.0525.0434.4397.6374.3354.2339.4317.2297.7
135°835.9586.4468.9416.0388.5365.2343.5300.6263.7
150°987.3699.5557.8471.5420.8394.3372.6330.5286.7
Run VMG1139.9807.8644.1544.4484.1445.4415.7371.8330.9
Selected Courses
Windward / Leeward1135.4814.5661.5578.6533.1504.9484.1454.9432.6
All purpose863.4627.9519.4466.3437.7418.9404.7382.2364.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward554.61.0818
All purpose451.31.3296
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.9656
Downwind "popa"1.1311
70% up, 30% down "Ilhabela"1.0099
30% up, 70% down "Ilhabela-inverso"1.0757
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Predominantly Upwind486.61.2330
Predominantly Downwind459.01.3072
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low573.71.0459
Triple Number AP Medium449.41.3352
Triple Number AP High399.81.5006
Triple Number Windward/Leeward Low769.50.7798
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Single Number Predominant Upwind504.51.1893
Single Number Predominant Reaching448.21.3386
Single Number Predominant Downwind477.61.2564
Predominant Upwind - Low686.40.8741
Predominant Upwind - Low/Med530.61.1309
Predominant Upwind - Medium472.81.2692
Predominant Upwind - Med/High440.41.3625
Predominant Upwind - High422.01.4219
Predominant Downwind Low694.60.8638
Predominant Downwind Low/Med517.91.1585
Predominant Downwind Medium444.11.3511
Predominant Downwind Med/High394.51.5210
Predominant Downwind High360.51.6646
Predominant Reaching Low616.40.9735
Predominant Reaching Low/Med475.71.2613
Predominant Reaching Medium421.51.4233
Predominant Reaching Med/High385.71.5557
Predominant Reaching High360.61.6637
SA/DSPL Upwind26.03SA/DSPL Downwind56.01
Scoring OptionTODTOT
5-Band Windward/Leeward Low856.50.7005
5-Band Windward/Leeward Low/Med635.80.9436
5-Band Windward/Leeward Medium542.51.1060
5-Band Windward/Leeward Med/High486.81.2325
5-Band Windward/Leeward High456.11.3155
Windward/Leeward 60-40 Low857.80.6995
Windward/Leeward 60-40 Low/Med641.10.9359
Windward/Leeward 60-40 Medium551.91.0871
Windward/Leeward 60-40 Med/High500.41.1991
Windward/Leeward 60-40 High472.91.2689
5-Band AP Low632.90.9480
5-Band AP Low/Med504.61.1891
5-Band AP Medium443.31.3535
5-Band AP Med/High406.11.4775
5-Band AP High383.01.5664
5-Band SF Bay Tour - Low739.40.8114
5-Band SF Bay Tour - Low/Med606.50.9893
5-Band SF Bay Tour - Medium522.41.1486
5-Band SF Bay Tour - Med/High472.81.2690
5-Band SF Bay Tour - High444.21.3509
Chicago-Mac Upwind1.1540
Chicago-Mac All Purpose1.1850
Chicago-Mac Downwind1.2099
Bayview-Mac Cove Island0.8748
Bayview-Mac Shore0.8811
Harvest Moon Regatta393.11.5265
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance491.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating491.01.2219
FinRating, kevyt tuuli840.71.1895
FinRating, kova tuuli385.11.2984
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.2219
Triple Number Coastal/Long Distance Low1.0459
Triple Number Coastal/Long Distance Medium1.3353
Triple Number Coastal/Long Distance High1.5006
Triple Number Windward/Leeward Low0.8130
Triple Number Windward/Leeward Medium1.0872
Triple Number Windward/Leeward High1.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
For information
General Purpose Handicap (GPH)505.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low573.7
Triple Number Coastal/Long Distance Medium449.3
Triple Number Coastal/Long Distance High399.8
Triple Number Windward/Leeward Low738.0
Triple Number Windward/Leeward Medium551.9
Triple Number Windward/Leeward High478.4
Predominantly Upwind486.6
Predominantly Downwind459.0
Predominantly Reaching439.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0459
Triple Number Coastal/Long Distance Medium1.3353
Triple Number Coastal/Long Distance High1.5006
Triple Number Windward/Leeward Low0.8130
Triple Number Windward/Leeward Medium1.0872
Triple Number Windward/Leeward High1.2543
Coastal/Long Distance1.2219
Predominantly Upwind1.2330
Predominantly Downwind1.3072
For information
General Purpose Handicap (GPH)505.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.3296
Distanseseilas Trippeltall svak vind1.0459
Distanseseilas Trippeltall mellomvind1.3353
Distanseseilas Trippeltall sterk vind1.5006
Pølsebane Trippeltall svak vind0.8130
Pølsebane Trippeltall mellomvind1.0872
Pølsebane Trippeltall sterk vind1.2543
Motvind Singeltall1.2330
Medvind Singeltall1.3072
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Coastal/Long Distance491.01.2219
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind486.61.2330
Predominantly Downwind459.01.3072
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore439.31.3659
Cape Doctor Coastal369.81.6225
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0459
Triple Number Coastal/Long Distance Medium1.3353
Triple Number Coastal/Long Distance High1.5006
Triple Number Windward/Leeward Low0.8130
Triple Number Windward/Leeward Medium1.0872
Triple Number Windward/Leeward High1.2543
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0459
Triple Number Coastal/Long Distance Medium1.3353
Triple Number Coastal/Long Distance High1.5006
Triple Number Windward/Leeward Low0.8130
Triple Number Windward/Leeward Medium1.0872
Triple Number Windward/Leeward High1.2543
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Predominantly Upwind486.61.2330
Predominantly Downwind459.01.3072
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance491.01.2219
Triple Number Coastal/Long Distance Low573.71.0459
Triple Number Coastal/Long Distance Medium449.31.3353
Triple Number Coastal/Long Distance High399.81.5006
Triple Number Windward/Leeward Low738.00.8130
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1205.8813.8623.1523.5466.2434.3408.7368.2350.9
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low573.71.0459
Triple Number AP Medium449.41.3352
Triple Number AP High399.81.5006
Triple Number Windward/Leeward Low769.50.7798
Triple Number Windward/Leeward Medium551.91.0872
Triple Number Windward/Leeward High478.41.2543
Single Number Predominant Upwind504.51.1893
Single Number Predominant Reaching448.21.3386
Single Number Predominant Downwind477.61.2564
Predominant Upwind - Low686.40.8741
Predominant Upwind - Low/Med530.61.1309
Predominant Upwind - Medium472.81.2692
Predominant Upwind - Med/High440.41.3625
Predominant Upwind - High422.01.4219
Predominant Downwind Low694.60.8638
Predominant Downwind Low/Med517.91.1585
Predominant Downwind Medium444.11.3511
Predominant Downwind Med/High394.51.5210
Predominant Downwind High360.51.6646
Predominant Reaching Low616.40.9735
Predominant Reaching Low/Med475.71.2613
Predominant Reaching Medium421.51.4233
Predominant Reaching Med/High385.71.5557
Predominant Reaching High360.61.6637
SA/DSPL Upwind26.03SA/DSPL Downwind56.01
Scoring OptionTODTOT
5-Band Windward/Leeward Low856.50.7005
5-Band Windward/Leeward Low/Med635.80.9436
5-Band Windward/Leeward Medium542.51.1060
5-Band Windward/Leeward Med/High486.81.2325
5-Band Windward/Leeward High456.11.3155
Windward/Leeward 60-40 Low857.80.6995
Windward/Leeward 60-40 Low/Med641.10.9359
Windward/Leeward 60-40 Medium551.91.0871
Windward/Leeward 60-40 Med/High500.41.1991
Windward/Leeward 60-40 High472.91.2689
5-Band AP Low632.90.9480
5-Band AP Low/Med504.61.1891
5-Band AP Medium443.31.3535
5-Band AP Med/High406.11.4775
5-Band AP High383.01.5664
5-Band SF Bay Tour - Low739.40.8114
5-Band SF Bay Tour - Low/Med606.50.9893
5-Band SF Bay Tour - Medium522.41.1486
5-Band SF Bay Tour - Med/High472.81.2690
5-Band SF Bay Tour - High444.21.3509
Chicago-Mac Upwind1.1540
Chicago-Mac All Purpose1.1850
Chicago-Mac Downwind1.2099
Bayview-Mac Cove Island0.8748
Bayview-Mac Shore0.8811
Harvest Moon Regatta393.11.5265
Club Certificate2025
RHN REGATTA 5CHN 55070
ORC
Central Rating Office
Issuing certificates for
CHINA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUBOIS 50Measurement27/10/2025HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA14.990Max. Beam4.360Draft3.302Displacement13,325Wetted area47.40IMS L14.434LSM014.344Acc. length14.170Sink (kg/mm) 33.63
VCGD-0.253VCGM-0.354RM Rated (kg·m) 379.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight1,151Declared crew weight1,190
PROPELLER
Propeller TypeFolding 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRDPBW
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionInner stayFixedMast materialCarbonSingle headsail furlerNoMainsail furlerArticulated bowspritYesNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstaysCheckstaysSpreaders2Rotating mastNo
P20.140IG19.650ISP20.800MDT10.145MDL10.290MDT20.145MDL20.240TL1.100MWGO
E6.620J5.690BAS1.900FSDSFJSPLWPLTPS6.010BD0.290MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date27/10/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
RHN REGATTA 5CHN 55070
ORC
Central Rating Office
Issuing certificates for
CHINA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment02.223.324.7587.46
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.841.613.046.0219.65NoNo 60.09
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment024.2822.3723.3311.9511.38105%230.06
CRUISER/RACER REQUIREMENTS*
Accommodation length14.2 mTable area0.66 m²Headroom1.90 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity246 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity134 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.