Club
Certificate
2024

Boat

MAYK

TUR-1731

Turkiye
Sailing
Federation
www.tyf.org.tr/
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles43.2°41.4°39.3°37.3°36.7°36.6°37.5°39.3°
Beat VMG3.093.774.264.584.694.744.724.63
52°4.695.586.066.376.596.686.776.76
60°4.935.776.216.576.867.007.167.18
75°5.075.876.346.787.207.557.928.12
90°5.366.216.717.017.277.828.829.39
110°5.436.317.017.698.228.699.6610.72
120°5.286.206.907.708.609.4110.8612.35
135°4.765.826.507.188.019.0312.4914.43
150°4.055.125.906.446.977.7110.5713.76
Run VMG3.504.435.115.586.046.679.1511.91
Gybe Angles144.4°148.0°149.5°148.3°145.7°143.5°139.4°144.4°
APH ToD:597.0CDL: 6.975APH ToT: 1.0051CertNo:
BOAT
ClassJ-70 ONE DESIGNDesignerJOHNSTONEBuilderJ BOATSAge date04/2023Series date02/2012Offset fileJ-70.OD.OFFData fileTUR1731 MAYK
HULL
Length Overall6.942 mMaximum Beam2.260 mDraft1.450 mDisplacement812 kgDLR3.3788IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.390%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight365 kg(declared)Minimum weight235 kg * when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail15.4616.07Headsail Luffed10.0010.00Headsail FlyingSymmetricAsymmetric45.6445.64 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail4.02Storm Jib3.39Heavy Weather Jib9.13
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
OUTBOARD ENGINE ELECTRICAL
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.
ORC Ref  04590003DLSIssued on 27/08/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org

Club
Certificate
2024

Boat

MAYK

TUR-1731

Turkiye
Sailing
Federation
www.tyf.org.tr/
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1165.5954.0845.4786.5767.0760.1763.3777.6
52°767.4644.8594.2564.7546.6538.5531.5532.5
60°730.6623.9579.4548.1525.1514.3502.9501.2
75°710.2612.9567.6531.2500.1476.8454.5443.4
90°671.8580.1536.2513.8495.1460.2408.2383.3
110°663.2570.3513.5468.4438.1414.1372.8335.7
120°682.2580.8521.5467.6418.8382.5331.4291.4
135°756.1618.3553.5501.7449.6398.8288.2249.5
150°889.6703.4610.5559.0516.2467.1340.6261.7
Run VMG1027.2812.2704.9645.5596.0539.3393.3302.1
Selected Courses
Windward / Leeward1096.3883.1775.2716.0681.5649.7578.3539.9
All purpose846.3698.8625.7580.5549.3521.4469.7442.0
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward743.20.8074
All purpose597.01.0051
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6952
Downwind "popa"0.8901
70% up, 30% down "Ilhabela"0.7440
30% up, 70% down "Ilhabela-inverso"0.8210
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Predominantly Upwind656.40.9141
Predominantly Downwind600.00.9999
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low772.50.7767
Triple Number AP Medium597.71.0039
Triple Number AP High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Single Number Predominant Upwind655.10.9159
Single Number Predominant Reaching569.41.0537
Single Number Predominant Downwind601.30.9979
Predominant Upwind - Low864.70.6939
Predominant Upwind - Low/Med724.00.8288
Predominant Upwind - Medium636.50.9426
Predominant Upwind - Med/High584.01.0273
Predominant Upwind - High553.31.0844
Predominant Downwind Low827.90.7247
Predominant Downwind Low/Med682.20.8795
Predominant Downwind Medium584.11.0272
Predominant Downwind Med/High495.61.2106
Predominant Downwind High412.91.4532
Predominant Reaching Low751.10.7988
Predominant Reaching Low/Med633.80.9466
Predominant Reaching Medium556.01.0791
Predominant Reaching Med/High488.01.2296
Predominant Reaching High430.41.3940
SA/DSPL Upwind29.28SA/DSPL Downwind70.25
Scoring OptionTODTOT
5-Band Windward/Leeward Low1048.00.5725
5-Band Windward/Leeward Low/Med851.80.7044
5-Band Windward/Leeward Medium728.50.8236
5-Band Windward/Leeward Med/High648.60.9251
5-Band Windward/Leeward High584.01.0274
Windward/Leeward 60-40 Low1061.90.5650
Windward/Leeward 60-40 Low/Med865.90.6929
Windward/Leeward 60-40 Medium743.80.8067
Windward/Leeward 60-40 Med/High671.70.8933
Windward/Leeward 60-40 High620.30.9673
5-Band AP Low812.80.7382
5-Band AP Low/Med677.30.8859
5-Band AP Medium587.71.0208
5-Band AP Med/High522.41.1486
5-Band AP High473.91.2661
5-Band SF Bay Tour - Low999.10.6006
5-Band SF Bay Tour - Low/Med816.10.7352
5-Band SF Bay Tour - Medium699.70.8575
5-Band SF Bay Tour - Med/High624.90.9602
5-Band SF Bay Tour - High568.81.0549
Chicago-Mac Upwind0.8970
Chicago-Mac All Purpose0.9374
Chicago-Mac Downwind0.9839
Bayview-Mac Cove Island0.8683
Bayview-Mac Shore0.8729
Harvest Moon Regatta497.21.2068
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance649.0
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7767
Triple Number Coastal/Long Distance Medium1.0040
Triple Number Coastal/Long Distance High1.1787
Triple Number Windward/Leeward Low0.6062
Triple Number Windward/Leeward Medium0.8097
Triple Number Windward/Leeward High0.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low772.5
Triple Number Coastal/Long Distance Medium597.6
Triple Number Coastal/Long Distance High509.0
Triple Number Windward/Leeward Low989.8
Triple Number Windward/Leeward Medium741.0
Triple Number Windward/Leeward High630.9
Predominantly Upwind656.4
Predominantly Downwind600.0
Predominantly Reaching576.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7767
Triple Number Coastal/Long Distance Medium1.0040
Triple Number Coastal/Long Distance High1.1787
Triple Number Windward/Leeward Low0.6062
Triple Number Windward/Leeward Medium0.8097
Triple Number Windward/Leeward High0.9510
Coastal/Long Distance0.9245
Predominantly Upwind0.9141
Predominantly Downwind0.9999
For information
General Purpose Handicap (GPH)671.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7767
Tretall Distanseseilas Mellomvind1.0040
Tretall Distanseseilas Mye vind1.1787
Tretall Pølsebane Lite vind0.6062
Tretall Pølsebane Mellomvind0.8097
Tretall Pølsebane Mye vind0.9510
Distanseseilas ett tall1.0051
Enkeltall Motvind0.9141
Enkeltall Medvind0.9999
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Coastal/Long Distance649.00.9245
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind656.40.9141
Predominantly Downwind600.00.9999
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore551.41.0881
Cape Doctor Coastal450.31.3325
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7767
Triple Number Coastal/Long Distance Medium1.0040
Triple Number Coastal/Long Distance High1.1787
Triple Number Windward/Leeward Low0.6062
Triple Number Windward/Leeward Medium0.8097
Triple Number Windward/Leeward High0.9510
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7767
Triple Number Coastal/Long Distance Medium1.0040
Triple Number Coastal/Long Distance High1.1787
Triple Number Windward/Leeward Low0.6062
Triple Number Windward/Leeward Medium0.8097
Triple Number Windward/Leeward High0.9510
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Predominantly Upwind656.40.9141
Predominantly Downwind600.00.9999
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance649.00.9245
Triple Number Coastal/Long Distance Low772.50.7767
Triple Number Coastal/Long Distance Medium597.61.0040
Triple Number Coastal/Long Distance High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4830.9701.1620.4570.7524.4439.9409.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low772.50.7767
Triple Number AP Medium597.71.0039
Triple Number AP High509.01.1787
Triple Number Windward/Leeward Low989.80.6062
Triple Number Windward/Leeward Medium741.00.8097
Triple Number Windward/Leeward High630.90.9510
Single Number Predominant Upwind655.10.9159
Single Number Predominant Reaching569.41.0537
Single Number Predominant Downwind601.30.9979
Predominant Upwind - Low864.70.6939
Predominant Upwind - Low/Med724.00.8288
Predominant Upwind - Medium636.50.9426
Predominant Upwind - Med/High584.01.0273
Predominant Upwind - High553.31.0844
Predominant Downwind Low827.90.7247
Predominant Downwind Low/Med682.20.8795
Predominant Downwind Medium584.11.0272
Predominant Downwind Med/High495.61.2106
Predominant Downwind High412.91.4532
Predominant Reaching Low751.10.7988
Predominant Reaching Low/Med633.80.9466
Predominant Reaching Medium556.01.0791
Predominant Reaching Med/High488.01.2296
Predominant Reaching High430.41.3940
SA/DSPL Upwind29.28SA/DSPL Downwind70.25
Scoring OptionTODTOT
5-Band Windward/Leeward Low1048.00.5725
5-Band Windward/Leeward Low/Med851.80.7044
5-Band Windward/Leeward Medium728.50.8236
5-Band Windward/Leeward Med/High648.60.9251
5-Band Windward/Leeward High584.01.0274
Windward/Leeward 60-40 Low1061.90.5650
Windward/Leeward 60-40 Low/Med865.90.6929
Windward/Leeward 60-40 Medium743.80.8067
Windward/Leeward 60-40 Med/High671.70.8933
Windward/Leeward 60-40 High620.30.9673
5-Band AP Low812.80.7382
5-Band AP Low/Med677.30.8859
5-Band AP Medium587.71.0208
5-Band AP Med/High522.41.1486
5-Band AP High473.91.2661
5-Band SF Bay Tour - Low999.10.6006
5-Band SF Bay Tour - Low/Med816.10.7352
5-Band SF Bay Tour - Medium699.70.8575
5-Band SF Bay Tour - Med/High624.90.9602
5-Band SF Bay Tour - High568.81.0549
Chicago-Mac Upwind0.8970
Chicago-Mac All Purpose0.9374
Chicago-Mac Downwind0.9839
Bayview-Mac Cove Island0.8683
Bayview-Mac Shore0.8729
Harvest Moon Regatta497.21.2068
ORC Ref  04590003DLSIssued on 27/08/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org

Club
Certificate
2024

Boat

MAYK

TUR-1731

Turkiye
Sailing
Federation
www.tyf.org.tr/
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-70 ONE DESIGNMeasurement20/06/2023HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA6.942Max. Beam2.260Draft1.450Displacement812Wetted area9.16IMS L6.741LSM06.217Acc. length6.942Sink (kg/mm) 7.48
VCGD-0.250VCGM-0.254RM Rated (kg·m) 21.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight349Declared crew weight365
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays0Spreaders1Rotating mastNo
P7.975IG8.153ISP9.412MDT10.076MDL10.131MDT20.070MDL20.070TL1.000MW0.116GO0.136
E2.876J2.340BAS1.145FSD0.000SFJ0.175SPL0.000WPLTPS4.025BD0.095MWT24.00MCG3.880
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.250Flotation Date22/06/2023
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04590003DLSIssued on 27/08/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org

Club
Certificate
2024

Boat

MAYK

TUR-1731

Turkiye
Sailing
Federation
www.tyf.org.tr/
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.370.881.432.142.5715.46CLASS
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.060.350.651.251.862.458.00YesNo 10.00CLASS
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA10.808.809.805.565.7098%45.64
ORC Ref  04590003DLSIssued on 27/08/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org