Club Certificate2025
CHEESE IVTUR 1957
Turkiye
Sailing
Federation
www.tyf.org.tr/
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°39.6°37.4°36.7°36.2°35.8°35.8°37.1°
Beat VMG3.154.335.185.595.805.936.026.095.99
52°4.946.527.497.868.048.178.278.418.39
60°5.286.847.718.088.298.448.568.738.76
75°5.537.067.868.328.658.869.059.319.44
90°5.386.947.828.348.819.219.5210.0210.37
110°5.096.777.878.468.849.199.5410.6811.69
120°4.886.607.818.499.099.5910.0511.0011.92
135°4.235.957.328.138.849.6210.5412.3813.92
150°3.514.996.297.398.148.809.5511.5414.70
Run VMG3.044.325.456.407.177.788.379.9912.73
Gybe Angles142.6°142.6°143.8°151.2°157.5°163.0°160.9°149.0°148.0°
APH ToD:474.8CDL: 11.401APH ToT: 1.2637CertNo:
BOAT
ClassFarr 40DesignerFarrBuilderCarrollAge date01/2000Series date01/1996Offset fileFARR40.OD.OFFData fileTUR1957
HULL
Length Overall12.415 mMaximum Beam3.956 mDraft2.592 mDisplacement4,948 kgDLR4.0226IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.407m
CREW
Maximum weight850 kg(declared)Minimum weight720 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail60.2661.69Headsail Luffed40.7940.79Headsail FlyingSymmetric154.68154.68Asymmetric
STORM SAIL AREAS (m²)
Trysail17.25Storm Jib13.13Heavy Weather Jib35.45
SAIL LIMITS
Headsails7Spinnakers5
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
IRC ENDORSED 04Apr25
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  04590003SW5Issued on 29/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
CHEESE IVTUR 1957
Turkiye
Sailing
Federation
www.tyf.org.tr/
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 VMG1142.2832.4695.0644.1621.0607.4598.2590.8601.0
52°729.0552.0480.6458.0447.6440.5435.1428.3429.2
60°681.4526.2467.0445.3434.3426.4420.3412.5411.1
75°650.4509.7458.2432.9416.3406.1398.0386.6381.5
90°669.3518.7460.6431.9408.6391.0378.1359.4347.1
110°707.4531.8457.4425.7407.1391.5377.5337.1307.9
120°737.5545.1460.7423.9395.9375.6358.1327.3301.9
135°850.3605.1492.1442.6407.3374.3341.5290.8258.7
150°1024.5721.2572.3487.2442.3409.0377.1311.9244.8
Run VMG1184.5832.8660.8562.1502.1462.7430.1360.2282.7
Selected Courses
Windward / Leeward1163.2832.6677.9603.1561.6535.1514.2475.5441.9
All purpose874.8642.6538.5491.3463.6444.0427.6398.3376.9
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward580.71.0332
All purpose474.81.2637
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.9153
Downwind "popa"1.1021
70% up, 30% down "Ilhabela"0.9643
30% up, 70% down "Ilhabela-inverso"1.0385
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Predominantly Upwind512.91.1697
Predominantly Downwind477.51.2566
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low590.61.0160
Triple Number AP Medium474.21.2652
Triple Number AP High420.71.4262
Triple Number Windward/Leeward Low788.60.7609
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Single Number Predominant Upwind530.11.1319
Single Number Predominant Reaching466.71.2857
Single Number Predominant Downwind495.01.2120
Predominant Upwind - Low698.50.8590
Predominant Upwind - Low/Med552.81.0853
Predominant Upwind - Medium501.21.1971
Predominant Upwind - Med/High469.51.2778
Predominant Upwind - High451.21.3297
Predominant Downwind Low712.80.8418
Predominant Downwind Low/Med538.91.1133
Predominant Downwind Medium464.51.2916
Predominant Downwind Med/High407.51.4725
Predominant Downwind High363.71.6499
Predominant Reaching Low628.90.9540
Predominant Reaching Low/Med496.81.2077
Predominant Reaching Medium443.01.3544
Predominant Reaching Med/High401.51.4943
Predominant Reaching High372.91.6092
SA/DSPL Upwind34.62SA/DSPL Downwind73.63
Scoring OptionTODTOT
5-Band Windward/Leeward Low876.60.6845
5-Band Windward/Leeward Low/Med657.10.9131
5-Band Windward/Leeward Medium569.81.0531
5-Band Windward/Leeward Med/High515.11.1647
5-Band Windward/Leeward High476.41.2595
Windward/Leeward 60-40 Low876.40.6846
Windward/Leeward 60-40 Low/Med663.00.9050
Windward/Leeward 60-40 Medium581.21.0324
Windward/Leeward 60-40 Med/High532.21.1274
Windward/Leeward 60-40 High499.91.2003
5-Band AP Low648.30.9255
5-Band AP Low/Med526.11.1404
5-Band AP Medium468.11.2816
5-Band AP Med/High428.41.4005
5-Band AP High399.71.5013
5-Band SF Bay Tour - Low756.40.7932
5-Band SF Bay Tour - Low/Med628.30.9549
5-Band SF Bay Tour - Medium550.01.0910
5-Band SF Bay Tour - Med/High500.21.1996
5-Band SF Bay Tour - High465.71.2885
Chicago-Mac Upwind1.1013
Chicago-Mac All Purpose1.1366
Chicago-Mac Downwind1.1656
Bayview-Mac Cove Island0.8505
Bayview-Mac Shore0.8571
Harvest Moon Regatta409.61.4649
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance514.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating514.71.1658
FinRating, kevyt tuuli860.61.1620
FinRating, kova tuuli401.41.2456
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.1658
Triple Number Coastal/Long Distance Low1.0160
Triple Number Coastal/Long Distance Medium1.2653
Triple Number Coastal/Long Distance High1.4262
Triple Number Windward/Leeward Low0.7945
Triple Number Windward/Leeward Medium1.0372
Triple Number Windward/Leeward High1.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
For information
General Purpose Handicap (GPH)528.8
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low590.6
Triple Number Coastal/Long Distance Medium474.2
Triple Number Coastal/Long Distance High420.7
Triple Number Windward/Leeward Low755.2
Triple Number Windward/Leeward Medium578.5
Triple Number Windward/Leeward High504.9
Predominantly Upwind512.9
Predominantly Downwind477.5
Predominantly Reaching458.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0160
Triple Number Coastal/Long Distance Medium1.2653
Triple Number Coastal/Long Distance High1.4262
Triple Number Windward/Leeward Low0.7945
Triple Number Windward/Leeward Medium1.0372
Triple Number Windward/Leeward High1.1884
Coastal/Long Distance1.1658
Predominantly Upwind1.1697
Predominantly Downwind1.2566
For information
General Purpose Handicap (GPH)528.8
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.2637
Distanseseilas Trippeltall svak vind1.0160
Distanseseilas Trippeltall mellomvind1.2653
Distanseseilas Trippeltall sterk vind1.4262
Pølsebane Trippeltall svak vind0.7945
Pølsebane Trippeltall mellomvind1.0372
Pølsebane Trippeltall sterk vind1.1884
Motvind Singeltall1.1697
Medvind Singeltall1.2566
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Coastal/Long Distance514.71.1658
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind512.91.1697
Predominantly Downwind477.51.2566
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore452.01.3276
Cape Doctor Coastal383.31.5653
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0160
Triple Number Coastal/Long Distance Medium1.2653
Triple Number Coastal/Long Distance High1.4262
Triple Number Windward/Leeward Low0.7945
Triple Number Windward/Leeward Medium1.0372
Triple Number Windward/Leeward High1.1884
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0160
Triple Number Coastal/Long Distance Medium1.2653
Triple Number Coastal/Long Distance High1.4262
Triple Number Windward/Leeward Low0.7945
Triple Number Windward/Leeward Medium1.0372
Triple Number Windward/Leeward High1.1884
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Predominantly Upwind512.91.1697
Predominantly Downwind477.51.2566
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance514.71.1658
Triple Number Coastal/Long Distance Low590.61.0160
Triple Number Coastal/Long Distance Medium474.21.2653
Triple Number Coastal/Long Distance High420.71.4262
Triple Number Windward/Leeward Low755.20.7945
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1234.4832.6640.3548.0493.4460.3431.6383.1360.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low590.61.0160
Triple Number AP Medium474.21.2652
Triple Number AP High420.71.4262
Triple Number Windward/Leeward Low788.60.7609
Triple Number Windward/Leeward Medium578.51.0372
Triple Number Windward/Leeward High504.91.1884
Single Number Predominant Upwind530.11.1319
Single Number Predominant Reaching466.71.2857
Single Number Predominant Downwind495.01.2120
Predominant Upwind - Low698.50.8590
Predominant Upwind - Low/Med552.81.0853
Predominant Upwind - Medium501.21.1971
Predominant Upwind - Med/High469.51.2778
Predominant Upwind - High451.21.3297
Predominant Downwind Low712.80.8418
Predominant Downwind Low/Med538.91.1133
Predominant Downwind Medium464.51.2916
Predominant Downwind Med/High407.51.4725
Predominant Downwind High363.71.6499
Predominant Reaching Low628.90.9540
Predominant Reaching Low/Med496.81.2077
Predominant Reaching Medium443.01.3544
Predominant Reaching Med/High401.51.4943
Predominant Reaching High372.91.6092
SA/DSPL Upwind34.62SA/DSPL Downwind73.63
Scoring OptionTODTOT
5-Band Windward/Leeward Low876.60.6845
5-Band Windward/Leeward Low/Med657.10.9131
5-Band Windward/Leeward Medium569.81.0531
5-Band Windward/Leeward Med/High515.11.1647
5-Band Windward/Leeward High476.41.2595
Windward/Leeward 60-40 Low876.40.6846
Windward/Leeward 60-40 Low/Med663.00.9050
Windward/Leeward 60-40 Medium581.21.0324
Windward/Leeward 60-40 Med/High532.21.1274
Windward/Leeward 60-40 High499.91.2003
5-Band AP Low648.30.9255
5-Band AP Low/Med526.11.1404
5-Band AP Medium468.11.2816
5-Band AP Med/High428.41.4005
5-Band AP High399.71.5013
5-Band SF Bay Tour - Low756.40.7932
5-Band SF Bay Tour - Low/Med628.30.9549
5-Band SF Bay Tour - Medium550.01.0910
5-Band SF Bay Tour - Med/High500.21.1996
5-Band SF Bay Tour - High465.71.2885
Chicago-Mac Upwind1.1013
Chicago-Mac All Purpose1.1366
Chicago-Mac Downwind1.1656
Bayview-Mac Cove Island0.8505
Bayview-Mac Shore0.8571
Harvest Moon Regatta409.61.4649
ORC Ref  04590003SW5Issued on 29/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
CHEESE IVTUR 1957
Turkiye
Sailing
Federation
www.tyf.org.tr/
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFarr 40Measurement11/06/2015HINPlan reviewHull constructionCoredCarbon rudderYesLight stanchionsNoTrim tabNo
LOA12.415Max. Beam3.956Draft2.592Displacement4,948Wetted area27.64IMS L11.238LSM010.714Acc. length12.415Sink (kg/mm) 21.00
VCGD-0.326VCGM-0.323RM Rated (kg·m) 168.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight759Declared crew weight850
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.407PBWPIPA0.0035
EDL0.702ST10.042ST20.180
ST30.180ST40.112ST50.268
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P16.700IG16.184ISP18.280MDT10.121MDL10.240MDT20.090MDL20.104TL1.993MW0.240GO0.246
E5.900J4.710BAS1.750FSD0.034SFJSPL5.390WPLTPSBD0.225MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date29/05/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04590003SW5Issued on 29/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
CHEESE IVTUR 1957
Turkiye
Sailing
Federation
www.tyf.org.tr/
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentE1.322.383.9560.26IRC ENDORSED
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.661.252.454.9416.42NoNo 40.79IRC ENDORSED 2025
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentA18.3618.3618.3610.209.75154.68IRC ENDORSED 2025
ORC Ref  04590003SW5Issued on 29/05/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org