Club Certificate2025
NARAYANABEL-58
ORC
Central Rating Office
Issuing certificates for
UNITED KINGDOM
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 Angles45.2°45.2°43.0°41.8°41.0°40.6°40.4°40.3°41.2°
Beat VMG3.024.225.175.736.046.236.366.506.42
52°4.826.577.858.598.949.169.309.459.47
60°5.217.008.268.989.339.529.649.799.80
75°5.527.348.579.309.699.9310.0810.3210.44
90°5.387.228.519.309.7910.1410.4210.8611.16
110°5.217.148.609.5310.1010.5010.8711.4911.80
120°4.926.868.419.4510.0910.6511.1912.0812.94
135°4.376.167.698.889.6710.2610.8612.2313.96
150°3.585.146.537.738.769.5210.0611.1312.44
Run VMG3.104.455.666.697.598.288.799.6910.77
Gybe Angles140.9°140.9°144.0°147.6°150.5°152.5°155.2°157.0°146.9°
APH ToD:444.0CDL: 14.783APH ToT: 1.3515CertNo:100907
BOAT
ClassSwan 58DesignerGerman FrersBuilderSwanAge date01/2025Series date12/2019Offset fileSWAN58.OFFData file58-028
HULL
Length Overall17.942 mMaximum Beam5.266 mDraft2.662 mDisplacement24,118 kgDLR4.7327IMS DivisionCruiser/RacerDynamic Allowance0.170%Age Allowance0.195%
PROPELLER
InstallationShaft exposedTypeFolding 4 bladesDiameter0.610m
CREW
Maximum weight405 kg(declared)Minimum weight275 kg ✱ when appliedNon Manual PowerYesCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail112.11114.06Headsail Luffed98.2998.29Headsail FlyingSymmetricAsymmetric258.91258.91 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail32.15Storm Jib32.74Heavy Weather Jib88.40
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
NARAYANABEL-58
ORC
Central Rating Office
Issuing certificates for
UNITED KINGDOM
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 VMG1192.0853.5696.8627.8596.1577.9566.2554.2560.9
52°746.4548.1458.8419.1402.6393.2387.3380.8380.3
60°691.3514.0436.0401.0385.9378.3373.3367.6367.3
75°652.7490.4420.2387.2371.5362.6357.1348.8344.7
90°669.8498.4422.9387.2367.9355.2345.3331.4322.6
110°691.0504.1418.7377.9356.4342.9331.3313.4305.0
120°731.6525.0428.0380.9356.9338.1321.8298.0278.3
135°824.6584.0467.9405.4372.3351.0331.4294.4257.8
150°1006.6700.9551.3465.9410.9378.2357.8323.4289.4
Run VMG1162.2809.3636.6538.0474.3434.8409.4371.5334.2
Selected Courses
Windward / Leeward1176.9831.4666.7582.9535.2506.3487.8462.9447.5
All purpose880.9632.8516.6459.1428.3409.5396.1376.8364.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward558.61.0742
All purpose444.01.3515
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.9391
Downwind "popa"1.1432
70% up, 30% down "Ilhabela"0.9922
30% up, 70% down "Ilhabela-inverso"1.0732
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Predominantly Upwind483.21.2416
Predominantly Downwind449.81.3339
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low574.71.0441
Triple Number AP Medium441.31.3597
Triple Number AP High392.21.5298
Triple Number Windward/Leeward Low783.50.7658
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Single Number Predominant Upwind503.21.1924
Single Number Predominant Reaching437.51.3714
Single Number Predominant Downwind470.01.2765
Predominant Upwind - Low697.70.8600
Predominant Upwind - Low/Med530.31.1313
Predominant Upwind - Medium468.11.2818
Predominant Upwind - Med/High435.61.3775
Predominant Upwind - High420.21.4279
Predominant Downwind Low696.10.8620
Predominant Downwind Low/Med511.61.1728
Predominant Downwind Medium433.31.3847
Predominant Downwind Med/High385.11.5579
Predominant Downwind High355.51.6878
Predominant Reaching Low614.60.9763
Predominant Reaching Low/Med466.41.2864
Predominant Reaching Medium407.81.4712
Predominant Reaching Med/High373.11.6083
Predominant Reaching High351.81.7055
SA/DSPL Upwind24.94SA/DSPL Downwind43.98
Scoring OptionTODTOT
5-Band Windward/Leeward Low876.70.6844
5-Band Windward/Leeward Low/Med642.00.9346
5-Band Windward/Leeward Medium545.31.1003
5-Band Windward/Leeward Med/High490.71.2227
5-Band Windward/Leeward High464.51.2916
Windward/Leeward 60-40 Low881.10.6810
Windward/Leeward 60-40 Low/Med649.70.9234
Windward/Leeward 60-40 Medium557.11.0771
Windward/Leeward 60-40 Med/High506.31.1851
Windward/Leeward 60-40 High483.11.2419
5-Band AP Low634.00.9464
5-Band AP Low/Med500.41.1991
5-Band AP Medium434.91.3796
5-Band AP Med/High397.81.5083
5-Band AP High378.01.5871
5-Band SF Bay Tour - Low753.30.7964
5-Band SF Bay Tour - Low/Med612.30.9799
5-Band SF Bay Tour - Medium524.21.1446
5-Band SF Bay Tour - Med/High474.91.2633
5-Band SF Bay Tour - High450.61.3317
Chicago-Mac Upwind1.1546
Chicago-Mac All Purpose1.1949
Chicago-Mac Downwind1.2272
Bayview-Mac Cove Island0.8654
Bayview-Mac Shore0.8720
Harvest Moon Regatta377.91.5878
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance485.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating485.91.2348
FinRating, kevyt tuuli858.91.1642
FinRating, kova tuuli379.41.3180
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.2348
Triple Number Coastal/Long Distance Low1.0441
Triple Number Coastal/Long Distance Medium1.3599
Triple Number Coastal/Long Distance High1.5298
Triple Number Windward/Leeward Low0.8010
Triple Number Windward/Leeward Medium1.0814
Triple Number Windward/Leeward High1.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
For information
General Purpose Handicap (GPH)499.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low574.7
Triple Number Coastal/Long Distance Medium441.2
Triple Number Coastal/Long Distance High392.2
Triple Number Windward/Leeward Low749.1
Triple Number Windward/Leeward Medium554.8
Triple Number Windward/Leeward High483.1
Predominantly Upwind483.2
Predominantly Downwind449.8
Predominantly Reaching428.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0441
Triple Number Coastal/Long Distance Medium1.3599
Triple Number Coastal/Long Distance High1.5298
Triple Number Windward/Leeward Low0.8010
Triple Number Windward/Leeward Medium1.0814
Triple Number Windward/Leeward High1.2420
Coastal/Long Distance1.2348
Predominantly Upwind1.2416
Predominantly Downwind1.3339
For information
General Purpose Handicap (GPH)499.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.3515
Distanseseilas Trippeltall svak vind1.0441
Distanseseilas Trippeltall mellomvind1.3599
Distanseseilas Trippeltall sterk vind1.5298
Pølsebane Trippeltall svak vind0.8010
Pølsebane Trippeltall mellomvind1.0814
Pølsebane Trippeltall sterk vind1.2420
Motvind Singeltall1.2416
Medvind Singeltall1.3339
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Coastal/Long Distance485.91.2348
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind483.21.2416
Predominantly Downwind449.81.3339
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore452.11.3270
Cape Doctor Coastal368.21.6295
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0441
Triple Number Coastal/Long Distance Medium1.3599
Triple Number Coastal/Long Distance High1.5298
Triple Number Windward/Leeward Low0.8010
Triple Number Windward/Leeward Medium1.0814
Triple Number Windward/Leeward High1.2420
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low1.0441
Triple Number Coastal/Long Distance Medium1.3599
Triple Number Coastal/Long Distance High1.5298
Triple Number Windward/Leeward Low0.8010
Triple Number Windward/Leeward Medium1.0814
Triple Number Windward/Leeward High1.2420
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Predominantly Upwind483.21.2416
Predominantly Downwind449.81.3339
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance485.91.2348
Triple Number Coastal/Long Distance Low574.71.0441
Triple Number Coastal/Long Distance Medium441.21.3599
Triple Number Coastal/Long Distance High392.21.5298
Triple Number Windward/Leeward Low749.10.8010
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1251.3829.2625.3521.5459.8425.3398.7357.6344.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low574.71.0441
Triple Number AP Medium441.31.3597
Triple Number AP High392.21.5298
Triple Number Windward/Leeward Low783.50.7658
Triple Number Windward/Leeward Medium554.81.0814
Triple Number Windward/Leeward High483.11.2420
Single Number Predominant Upwind503.21.1924
Single Number Predominant Reaching437.51.3714
Single Number Predominant Downwind470.01.2765
Predominant Upwind - Low697.70.8600
Predominant Upwind - Low/Med530.31.1313
Predominant Upwind - Medium468.11.2818
Predominant Upwind - Med/High435.61.3775
Predominant Upwind - High420.21.4279
Predominant Downwind Low696.10.8620
Predominant Downwind Low/Med511.61.1728
Predominant Downwind Medium433.31.3847
Predominant Downwind Med/High385.11.5579
Predominant Downwind High355.51.6878
Predominant Reaching Low614.60.9763
Predominant Reaching Low/Med466.41.2864
Predominant Reaching Medium407.81.4712
Predominant Reaching Med/High373.11.6083
Predominant Reaching High351.81.7055
SA/DSPL Upwind24.94SA/DSPL Downwind43.98
Scoring OptionTODTOT
5-Band Windward/Leeward Low876.70.6844
5-Band Windward/Leeward Low/Med642.00.9346
5-Band Windward/Leeward Medium545.31.1003
5-Band Windward/Leeward Med/High490.71.2227
5-Band Windward/Leeward High464.51.2916
Windward/Leeward 60-40 Low881.10.6810
Windward/Leeward 60-40 Low/Med649.70.9234
Windward/Leeward 60-40 Medium557.11.0771
Windward/Leeward 60-40 Med/High506.31.1851
Windward/Leeward 60-40 High483.11.2419
5-Band AP Low634.00.9464
5-Band AP Low/Med500.41.1991
5-Band AP Medium434.91.3796
5-Band AP Med/High397.81.5083
5-Band AP High378.01.5871
5-Band SF Bay Tour - Low753.30.7964
5-Band SF Bay Tour - Low/Med612.30.9799
5-Band SF Bay Tour - Medium524.21.1446
5-Band SF Bay Tour - Med/High474.91.2633
5-Band SF Bay Tour - High450.61.3317
Chicago-Mac Upwind1.1546
Chicago-Mac All Purpose1.1949
Chicago-Mac Downwind1.2272
Bayview-Mac Cove Island0.8654
Bayview-Mac Shore0.8720
Harvest Moon Regatta377.91.5878
Club Certificate2025
NARAYANABEL-58
ORC
Central Rating Office
Issuing certificates for
UNITED KINGDOM
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSwan 58Measurement04/10/2023HINFI-SWN58028C525Plan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA17.942Max. Beam5.266Draft2.662Displacement24,118Wetted area68.60IMS L17.016LSM017.207Acc. length17.114Sink (kg/mm) 53.59
VCGD0.000VCGM0.032RM Rated (kg·m) 886.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight1,493Declared crew weight405
PROPELLER
Propeller TypeFolding 4 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.610PBW0.210PIPA0.0103
PSD0.040PHD0.090PHL0.222
PSA19.0°ESL1.323
ST10.030ST20.160ST30.200
ST40.080ST50.300
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders3Rotating mastNo
P24.300IG25.500ISP27.120MDT10.160MDL10.350MDT20.160MDL20.320TL1.400MW0.350GO0.375
E7.560J7.210BAS2.460FSD0.060SFJ0.460SPLWPLTPS8.750BD0.360MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.000Flotation Date13/08/2024
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
NARAYANABEL-58
ORC
Central Rating Office
Issuing certificates for
UNITED KINGDOM
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.451.752.854.906.65112.1109/10/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.091.102.053.905.807.4825.38NoNo 98.2909/10/2025
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA27.6322.1224.8811.9014.8580%258.91
CRUISER/RACER REQUIREMENTS*
Accommodation length17.1 mTable area0.88 m²Headroom1.90 mMinimum number of berths8Personal gear stowage0.32 m³Fresh water capacity444 lMinimum number of seats in cockpit8Food stowage0.48 m³Fuel capacity192 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.