Club Certificate2025
YELLOWDRAMA IVGBR 1250
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 Angles43.5°43.5°41.2°40.1°39.6°38.9°38.5°38.0°37.9°
Beat VMG2.773.824.645.235.595.805.936.096.13
52°4.365.846.907.638.058.288.418.558.59
60°4.636.167.197.888.268.498.648.788.83
75°4.816.367.388.058.448.688.869.109.20
90°4.696.237.288.018.468.758.969.289.53
110°4.285.907.178.078.588.919.169.479.69
120°4.165.736.987.948.538.919.219.7110.04
135°3.645.136.417.448.198.699.059.6810.31
150°2.984.345.586.637.528.218.689.359.97
Run VMG2.593.764.845.756.567.277.878.749.35
Gybe Angles144.6°144.6°148.7°152.3°154.6°159.7°165.5°177.7°178.6°
APH ToD:505.1CDL: 12.314APH ToT: 1.1878CertNo:050102
BOAT
ClassSWAN 57DesignerSPARKMAN & STEPHENBuilderNAUTORAge date02/1980Series date01/1977Offset fileSWN57S&S.OFFData file57-025
HULL
Length Overall17.460 mMaximum Beam4.742 mDraft2.858 mDisplacement24,537 kgDLR9.7805IMS DivisionCruiser/RacerDynamic Allowance0.610%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 3 bladesDiameter0.460m
CREW
Maximum weight1,066 kg(default)Minimum weight906 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail74.0075.28Headsail Luffed100.00100.00Headsail FlyingSymmetric187.99193.63Asymmetric
STORM SAIL AREAS (m²)
Trysail21.66Storm Jib24.65Heavy Weather Jib66.55
SAIL LIMITS
Headsails7
✱ Woven polyester sails
Spinnakers5
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
YELLOWDRAMA IVGBR 1250
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 VMG1301.6942.9775.1688.5643.8620.8606.6591.1587.0
52°826.4616.1521.7471.8447.4435.0428.2421.1419.0
60°776.7584.9501.0457.0435.7424.0416.9410.0407.5
75°747.8566.2488.1447.3426.5414.6406.4395.7391.1
90°767.3577.9494.7449.2425.5411.4401.8387.9377.7
110°841.4610.4502.2446.3419.4404.1393.0380.3371.6
120°866.0628.0515.4453.6422.0403.9390.8370.6358.4
135°990.1701.1561.4484.1439.3414.2397.6371.9349.2
150°1206.3829.1644.6543.0478.4438.4414.8385.1361.0
Run VMG1392.1957.3744.3625.8548.8495.1457.4412.1385.2
Selected Courses
Windward / Leeward1345.4950.1759.7657.2596.3558.0532.0501.6486.1
All purpose1012.3730.1596.7525.2485.3461.6446.2427.4416.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward623.70.9621
All purpose505.11.1878
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8626
Downwind "popa"0.9904
70% up, 30% down "Ilhabela"0.8973
30% up, 70% down "Ilhabela-inverso"0.9482
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Predominantly Upwind542.21.1067
Predominantly Downwind520.01.1538
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low663.40.9045
Triple Number AP Medium502.01.1952
Triple Number AP High443.01.3543
Triple Number Windward/Leeward Low893.90.6713
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Single Number Predominant Upwind563.51.0648
Single Number Predominant Reaching504.61.1891
Single Number Predominant Downwind544.51.1020
Predominant Upwind - Low789.20.7602
Predominant Upwind - Low/Med599.91.0002
Predominant Upwind - Medium523.01.1473
Predominant Upwind - Med/High482.71.2430
Predominant Upwind - High465.71.2883
Predominant Downwind Low816.00.7353
Predominant Downwind Low/Med596.01.0068
Predominant Downwind Medium499.31.2016
Predominant Downwind Med/High440.81.3612
Predominant Downwind High411.71.4574
Predominant Reaching Low712.80.8417
Predominant Reaching Low/Med540.61.1099
Predominant Reaching Medium468.51.2806
Predominant Reaching Med/High428.31.4010
Predominant Reaching High408.61.4685
SA/DSPL Upwind20.39SA/DSPL Downwind30.70
Scoring OptionTODTOT
5-Band Windward/Leeward Low1001.70.5990
5-Band Windward/Leeward Low/Med727.50.8248
5-Band Windward/Leeward Medium608.20.9864
5-Band Windward/Leeward Med/High536.71.1180
5-Band Windward/Leeward High504.21.1900
Windward/Leeward 60-40 Low999.50.6003
Windward/Leeward 60-40 Low/Med732.00.8197
Windward/Leeward 60-40 Medium617.60.9714
Windward/Leeward 60-40 Med/High551.31.0884
Windward/Leeward 60-40 High522.01.1495
5-Band AP Low737.30.8138
5-Band AP Low/Med574.71.0441
5-Band AP Medium494.01.2146
5-Band AP Med/High448.91.3365
5-Band AP High428.71.3996
5-Band SF Bay Tour - Low860.10.6976
5-Band SF Bay Tour - Low/Med694.20.8643
5-Band SF Bay Tour - Medium585.71.0244
5-Band SF Bay Tour - Med/High523.51.1462
5-Band SF Bay Tour - High495.71.2105
Chicago-Mac Upwind1.0288
Chicago-Mac All Purpose1.0477
Chicago-Mac Downwind1.0584
Bayview-Mac Cove Island0.7572
Bayview-Mac Shore0.7639
Harvest Moon Regatta439.21.3662
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance550.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating550.91.0892
FinRating, kevyt tuuli984.91.0153
FinRating, kova tuuli432.11.1572
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0892
Triple Number Coastal/Long Distance Low0.9045
Triple Number Coastal/Long Distance Medium1.1953
Triple Number Coastal/Long Distance High1.3543
Triple Number Windward/Leeward Low0.7018
Triple Number Windward/Leeward Medium0.9668
Triple Number Windward/Leeward High1.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
For information
General Purpose Handicap (GPH)569.8
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low663.3
Triple Number Coastal/Long Distance Medium502.0
Triple Number Coastal/Long Distance High443.0
Triple Number Windward/Leeward Low854.9
Triple Number Windward/Leeward Medium620.6
Triple Number Windward/Leeward High527.1
Predominantly Upwind542.2
Predominantly Downwind520.0
Predominantly Reaching495.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9045
Triple Number Coastal/Long Distance Medium1.1953
Triple Number Coastal/Long Distance High1.3543
Triple Number Windward/Leeward Low0.7018
Triple Number Windward/Leeward Medium0.9668
Triple Number Windward/Leeward High1.1383
Coastal/Long Distance1.0892
Predominantly Upwind1.1067
Predominantly Downwind1.1538
For information
General Purpose Handicap (GPH)569.8
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1878
Distanseseilas Trippeltall svak vind0.9045
Distanseseilas Trippeltall mellomvind1.1953
Distanseseilas Trippeltall sterk vind1.3543
Pølsebane Trippeltall svak vind0.7018
Pølsebane Trippeltall mellomvind0.9668
Pølsebane Trippeltall sterk vind1.1383
Motvind Singeltall1.1067
Medvind Singeltall1.1538
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Coastal/Long Distance550.91.0892
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind542.21.1067
Predominantly Downwind520.01.1538
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore490.81.2226
Cape Doctor Coastal419.51.4304
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9045
Triple Number Coastal/Long Distance Medium1.1953
Triple Number Coastal/Long Distance High1.3543
Triple Number Windward/Leeward Low0.7018
Triple Number Windward/Leeward Medium0.9668
Triple Number Windward/Leeward High1.1383
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9045
Triple Number Coastal/Long Distance Medium1.1953
Triple Number Coastal/Long Distance High1.3543
Triple Number Windward/Leeward Low0.7018
Triple Number Windward/Leeward Medium0.9668
Triple Number Windward/Leeward High1.1383
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Predominantly Upwind542.21.1067
Predominantly Downwind520.01.1538
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance550.91.0892
Triple Number Coastal/Long Distance Low663.30.9045
Triple Number Coastal/Long Distance Medium502.01.1953
Triple Number Coastal/Long Distance High443.01.3543
Triple Number Windward/Leeward Low854.90.7018
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1434.9950.8715.6592.1518.4479.2451.1411.6400.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low663.40.9045
Triple Number AP Medium502.01.1952
Triple Number AP High443.01.3543
Triple Number Windward/Leeward Low893.90.6713
Triple Number Windward/Leeward Medium620.60.9668
Triple Number Windward/Leeward High527.11.1383
Single Number Predominant Upwind563.51.0648
Single Number Predominant Reaching504.61.1891
Single Number Predominant Downwind544.51.1020
Predominant Upwind - Low789.20.7602
Predominant Upwind - Low/Med599.91.0002
Predominant Upwind - Medium523.01.1473
Predominant Upwind - Med/High482.71.2430
Predominant Upwind - High465.71.2883
Predominant Downwind Low816.00.7353
Predominant Downwind Low/Med596.01.0068
Predominant Downwind Medium499.31.2016
Predominant Downwind Med/High440.81.3612
Predominant Downwind High411.71.4574
Predominant Reaching Low712.80.8417
Predominant Reaching Low/Med540.61.1099
Predominant Reaching Medium468.51.2806
Predominant Reaching Med/High428.31.4010
Predominant Reaching High408.61.4685
SA/DSPL Upwind20.39SA/DSPL Downwind30.70
Scoring OptionTODTOT
5-Band Windward/Leeward Low1001.70.5990
5-Band Windward/Leeward Low/Med727.50.8248
5-Band Windward/Leeward Medium608.20.9864
5-Band Windward/Leeward Med/High536.71.1180
5-Band Windward/Leeward High504.21.1900
Windward/Leeward 60-40 Low999.50.6003
Windward/Leeward 60-40 Low/Med732.00.8197
Windward/Leeward 60-40 Medium617.60.9714
Windward/Leeward 60-40 Med/High551.31.0884
Windward/Leeward 60-40 High522.01.1495
5-Band AP Low737.30.8138
5-Band AP Low/Med574.71.0441
5-Band AP Medium494.01.2146
5-Band AP Med/High448.91.3365
5-Band AP High428.71.3996
5-Band SF Bay Tour - Low860.10.6976
5-Band SF Bay Tour - Low/Med694.20.8643
5-Band SF Bay Tour - Medium585.71.0244
5-Band SF Bay Tour - Med/High523.51.1462
5-Band SF Bay Tour - High495.71.2105
Chicago-Mac Upwind1.0288
Chicago-Mac All Purpose1.0477
Chicago-Mac Downwind1.0584
Bayview-Mac Cove Island0.7572
Bayview-Mac Shore0.7639
Harvest Moon Regatta439.21.3662
Club Certificate2025
YELLOWDRAMA IVGBR 1250
ORC
Central Rating Office
Issuing certificates for
UNITED KINGDOM
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSWAN 57Measurement26/04/1993HIN57-025Plan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA17.460Max. Beam4.742Draft2.858Displacement24,537Wetted area59.43IMS L13.867LSM013.587Acc. length15.412Sink (kg/mm) 40.04
VCGD-0.138VCGM-0.084RM Rated (kg·m) 581.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight1,066Declared crew weightN/A
PROPELLER
Propeller TypeFeathering 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.460PBW0.180PIPA0.0082
PSD0.040PHD0.082PHL0.200
PSA20.5°ESL1.450
ST10.090ST20.145ST30.190
ST4ST50.255
RIG
Forestay tensionAftInner stayFixedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P19.700IG22.093ISP22.102MDT10.220MDL10.260MDT20.220MDL20.260TLMW0.250GO0.285
E6.280J7.180BAS1.992FSD0.030SFJSPL7.309WPLTPSBD0.300MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date18/05/2023
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
YELLOWDRAMA IVGBR 1250
ORC
Central Rating Office
Issuing certificates for
UNITED KINGDOM
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.201.382.384.065.3074.00
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment271411.042.114.489.7321.16NoNo 100.00
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC21.2321.2321.2310.5610.89187.99
CRUISER/RACER REQUIREMENTS*
Accommodation length15.4 mTable area0.77 m²Headroom1.90 mMinimum number of berths7Personal gear stowage0.28 m³Fresh water capacity329 lMinimum number of seats in cockpit7Food stowage0.42 m³Fuel capacity158 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.