Club Certificate2025
CHANGELING
ORC
Central Rating Office
Issuing certificates for
Ireland
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 Angles43.3°43.3°41.2°39.3°38.0°37.3°36.8°36.5°36.8°
Beat VMG2.563.524.274.795.085.225.315.405.40
52°3.995.366.316.837.097.237.317.407.43
60°4.265.656.547.007.247.397.487.587.64
75°4.425.826.697.127.387.577.717.898.00
90°4.275.696.647.167.467.657.838.148.37
110°4.015.526.647.227.567.848.118.558.84
120°3.835.306.437.117.497.808.108.729.35
135°3.354.705.846.727.247.587.908.589.46
150°2.723.955.086.056.807.267.598.218.94
Run VMG2.353.424.405.256.016.627.097.728.31
Gybe Angles144.9°144.9°150.1°153.1°159.2°166.9°176.8°179.0°178.6°
APH ToD:562.7CDL: 9.459APH ToT: 1.0663CertNo:
BOAT
ClassSIGMA 38ODDesignerTHOMASBuilderMARINE PROJECTSAge date10/1991Series date01/1987Offset fileK16400.BOFData fileIRL8331
HULL
Length Overall11.552 mMaximum Beam3.688 mDraft2.050 mDisplacement7,000 kgDLR7.4047IMS DivisionCruiser/RacerDynamic Allowance0.290%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 3 bladesDiameter0.460m
CREW
Maximum weight765 kg(declared)Minimum weight635 kg ✱ when appliedNon Manual PowerCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail43.0843.99Headsail Luffed35.0735.07Headsail FlyingSymmetric77.8977.89Asymmetric
STORM SAIL AREAS (m²)
Trysail12.64Storm Jib8.96Heavy Weather Jib24.19
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
.
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
CHANGELING
ORC
Central Rating Office
Issuing certificates for
Ireland
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 VMG1407.91023.3843.9751.9708.5689.0677.4666.8666.8
52°901.2671.0570.6526.9507.6497.8492.6486.7484.4
60°844.9637.4550.4514.6497.2487.1481.4474.8471.5
75°815.1618.7538.1505.4487.8475.8466.9456.5450.1
90°843.4632.7542.4503.0482.6470.3459.9442.0430.2
110°898.5652.7542.5498.8476.2458.9444.0421.3407.0
120°939.0679.2560.0506.5480.4461.6444.6412.7384.9
135°1076.1765.6616.1535.9497.5474.7455.7419.8380.5
150°1324.8911.1708.2595.4529.4495.6474.1438.7402.6
Run VMG1530.01052.1817.6685.4599.4543.8507.9466.1433.4
Selected Courses
Windward / Leeward1467.11037.7830.7718.6654.0616.4592.7566.4550.1
All purpose1102.1795.5652.4580.7542.3520.3505.4484.8469.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward685.80.8749
All purpose562.71.0663
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7835
Downwind "popa"0.8989
70% up, 30% down "Ilhabela"0.8149
30% up, 70% down "Ilhabela-inverso"0.8609
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Predominantly Upwind602.50.9958
Predominantly Downwind577.71.0387
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low724.00.8288
Triple Number AP Medium558.81.0737
Triple Number AP High501.41.1967
Triple Number Windward/Leeward Low976.50.6145
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Single Number Predominant Upwind626.30.9581
Single Number Predominant Reaching563.51.0648
Single Number Predominant Downwind604.60.9924
Predominant Upwind - Low860.10.6976
Predominant Upwind - Low/Med659.30.9100
Predominant Upwind - Medium583.21.0288
Predominant Upwind - Med/High546.01.0989
Predominant Upwind - High529.61.1328
Predominant Downwind Low892.90.6720
Predominant Downwind Low/Med655.90.9148
Predominant Downwind Medium556.21.0788
Predominant Downwind Med/High497.71.2057
Predominant Downwind High465.71.2883
Predominant Reaching Low779.10.7701
Predominant Reaching Low/Med596.61.0057
Predominant Reaching Medium526.11.1404
Predominant Reaching Med/High487.31.2314
Predominant Reaching High464.41.2921
SA/DSPL Upwind21.22SA/DSPL Downwind32.84
Scoring OptionTODTOT
5-Band Windward/Leeward Low1093.80.5486
5-Band Windward/Leeward Low/Med795.60.7541
5-Band Windward/Leeward Medium668.10.8981
5-Band Windward/Leeward Med/High597.41.0043
5-Band Windward/Leeward High568.11.0561
Windward/Leeward 60-40 Low1089.90.5505
Windward/Leeward 60-40 Low/Med800.10.7499
Windward/Leeward 60-40 Medium678.70.8841
Windward/Leeward 60-40 Med/High614.00.9772
Windward/Leeward 60-40 High588.21.0200
5-Band AP Low804.00.7463
5-Band AP Low/Med631.90.9495
5-Band AP Medium551.11.0888
5-Band AP Med/High507.51.1822
5-Band AP High485.61.2355
5-Band SF Bay Tour - Low938.50.6393
5-Band SF Bay Tour - Low/Med759.70.7898
5-Band SF Bay Tour - Medium645.90.9289
5-Band SF Bay Tour - Med/High585.41.0249
5-Band SF Bay Tour - High558.81.0736
Chicago-Mac Upwind0.9296
Chicago-Mac All Purpose0.9465
Chicago-Mac Downwind0.9563
Bayview-Mac Cove Island0.6911
Bayview-Mac Shore0.6973
Harvest Moon Regatta495.71.2103
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance612.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating612.00.9805
FinRating, kevyt tuuli1075.40.9299
FinRating, kova tuuli488.81.0229
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9805
Triple Number Coastal/Long Distance Low0.8288
Triple Number Coastal/Long Distance Medium1.0738
Triple Number Coastal/Long Distance High1.1967
Triple Number Windward/Leeward Low0.6422
Triple Number Windward/Leeward Medium0.8812
Triple Number Windward/Leeward High1.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
For information
General Purpose Handicap (GPH)631.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low723.9
Triple Number Coastal/Long Distance Medium558.8
Triple Number Coastal/Long Distance High501.4
Triple Number Windward/Leeward Low934.3
Triple Number Windward/Leeward Medium680.9
Triple Number Windward/Leeward High588.8
Predominantly Upwind602.5
Predominantly Downwind577.7
Predominantly Reaching552.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8288
Triple Number Coastal/Long Distance Medium1.0738
Triple Number Coastal/Long Distance High1.1967
Triple Number Windward/Leeward Low0.6422
Triple Number Windward/Leeward Medium0.8812
Triple Number Windward/Leeward High1.0191
Coastal/Long Distance0.9805
Predominantly Upwind0.9958
Predominantly Downwind1.0387
For information
General Purpose Handicap (GPH)631.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0663
Distanseseilas Trippeltall svak vind0.8288
Distanseseilas Trippeltall mellomvind1.0738
Distanseseilas Trippeltall sterk vind1.1967
Pølsebane Trippeltall svak vind0.6422
Pølsebane Trippeltall mellomvind0.8812
Pølsebane Trippeltall sterk vind1.0191
Motvind Singeltall0.9958
Medvind Singeltall1.0387
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Coastal/Long Distance612.00.9805
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind602.50.9958
Predominantly Downwind577.71.0387
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore555.01.0810
Cape Doctor Coastal473.91.2662
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8288
Triple Number Coastal/Long Distance Medium1.0738
Triple Number Coastal/Long Distance High1.1967
Triple Number Windward/Leeward Low0.6422
Triple Number Windward/Leeward Medium0.8812
Triple Number Windward/Leeward High1.0191
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8288
Triple Number Coastal/Long Distance Medium1.0738
Triple Number Coastal/Long Distance High1.1967
Triple Number Windward/Leeward Low0.6422
Triple Number Windward/Leeward Medium0.8812
Triple Number Windward/Leeward High1.0191
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Predominantly Upwind602.50.9958
Predominantly Downwind577.71.0387
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance612.00.9805
Triple Number Coastal/Long Distance Low723.90.8288
Triple Number Coastal/Long Distance Medium558.81.0738
Triple Number Coastal/Long Distance High501.41.1967
Triple Number Windward/Leeward Low934.30.6422
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1568.11039.1782.6651.0576.8539.4511.6467.4450.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low724.00.8288
Triple Number AP Medium558.81.0737
Triple Number AP High501.41.1967
Triple Number Windward/Leeward Low976.50.6145
Triple Number Windward/Leeward Medium680.90.8812
Triple Number Windward/Leeward High588.81.0191
Single Number Predominant Upwind626.30.9581
Single Number Predominant Reaching563.51.0648
Single Number Predominant Downwind604.60.9924
Predominant Upwind - Low860.10.6976
Predominant Upwind - Low/Med659.30.9100
Predominant Upwind - Medium583.21.0288
Predominant Upwind - Med/High546.01.0989
Predominant Upwind - High529.61.1328
Predominant Downwind Low892.90.6720
Predominant Downwind Low/Med655.90.9148
Predominant Downwind Medium556.21.0788
Predominant Downwind Med/High497.71.2057
Predominant Downwind High465.71.2883
Predominant Reaching Low779.10.7701
Predominant Reaching Low/Med596.61.0057
Predominant Reaching Medium526.11.1404
Predominant Reaching Med/High487.31.2314
Predominant Reaching High464.41.2921
SA/DSPL Upwind21.22SA/DSPL Downwind32.84
Scoring OptionTODTOT
5-Band Windward/Leeward Low1093.80.5486
5-Band Windward/Leeward Low/Med795.60.7541
5-Band Windward/Leeward Medium668.10.8981
5-Band Windward/Leeward Med/High597.41.0043
5-Band Windward/Leeward High568.11.0561
Windward/Leeward 60-40 Low1089.90.5505
Windward/Leeward 60-40 Low/Med800.10.7499
Windward/Leeward 60-40 Medium678.70.8841
Windward/Leeward 60-40 Med/High614.00.9772
Windward/Leeward 60-40 High588.21.0200
5-Band AP Low804.00.7463
5-Band AP Low/Med631.90.9495
5-Band AP Medium551.11.0888
5-Band AP Med/High507.51.1822
5-Band AP High485.61.2355
5-Band SF Bay Tour - Low938.50.6393
5-Band SF Bay Tour - Low/Med759.70.7898
5-Band SF Bay Tour - Medium645.90.9289
5-Band SF Bay Tour - Med/High585.41.0249
5-Band SF Bay Tour - High558.81.0736
Chicago-Mac Upwind0.9296
Chicago-Mac All Purpose0.9465
Chicago-Mac Downwind0.9563
Bayview-Mac Cove Island0.6911
Bayview-Mac Shore0.6973
Harvest Moon Regatta495.71.2103
Club Certificate2025
CHANGELING
ORC
Central Rating Office
Issuing certificates for
Ireland
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSIGMA 38ODMeasurement11/02/1988HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA11.552Max. Beam3.688Draft2.050Displacement7,000Wetted area27.79IMS L10.035LSM09.813Acc. length11.552Sink (kg/mm) 19.96
VCGD-0.054VCGM-0.056RM Rated (kg·m) 142.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight670Declared crew weight765
PROPELLER
Propeller TypeFeathering 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.460PBW0.115PIPA0.0044
PSD0.025PHD0.061PHL0.100
PSA22.0°ESL0.730
ST10.022ST20.095ST30.115
ST40.052ST50.240
RIG
Forestay tensionAftInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P14.160IG13.385ISP13.385MDT10.132MDL10.186MDT20.107MDL20.138TL2.700MW0.186GO0.186
E5.100J3.980BAS1.535FSD0.036SFJ0.095SPL4.010WPLTPSBD0.160MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date22/09/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
CHANGELING
ORC
Central Rating Office
Issuing certificates for
Ireland
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC1.121.883.2543.08IRC
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC0.661.322.655.3013.18NoNo 35.07IRC
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC13.0813.0813.087.157.1377.89IRC
CRUISER/RACER REQUIREMENTS*
Accommodation length11.6 mTable area0.55 m²Headroom1.79 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity140 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity82 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.