Club
One Design
 Certificate
2022

Boat

ALPHA

ISR24A

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles44.1°42.4°39.6°38.1°37.8°38.1°38.2°
Beat VMG3.324.064.554.744.794.804.86
52°5.116.046.496.766.886.957.18
60°5.446.246.737.157.337.447.75
75°5.716.406.987.738.138.348.75
90°5.766.617.077.818.789.319.83
110°5.876.767.778.408.979.5111.53
120°5.736.657.658.819.5510.2611.72
135°5.146.247.068.149.4010.9513.55
150°4.355.526.317.058.029.0812.86
Run VMG3.774.785.486.106.947.8711.13
Gybe Angles144.2°147.4°151.6°148.3°145.3°144.2°142.2°

APH: 550.8

CDL: 7.481

GPH: 620.2

CertNo: 22024A

BOAT
ClassMELGES 24 ODDesignerREICHEL/PUGHBuilderROWENAge date11/2000Series date12/1992Offset filemelg24.ODData fileISR24A
HULL
Length Overall7.509 mMaximum Beam2.490 mDraft1.525 mDisplacement821 kgDLR2.7424IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight375 kgMinimum weight281 kg * when appliedNon Manual PowerNoCrew Arm Extension0.50 m
SAIL AREAS (m²)
MeasuredRatedMainsail21.3822.33Headsail Luffed12.1312.13Headsail FlyingSymmetricAsymmetric56.1856.18 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail5.87Storm Jib3.72Heavy Weather Jib10.04
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment25.0 kg·mStability 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.
ORC Ref  043900029NIIssued on 06/10/2022Valid until 28/02/2023
VPP ver: 2022 1.04 | © ORC | www.orc.org

Club
One Design
 Certificate
2022

Boat

ALPHA

ISR24A

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1085.2886.2791.0760.0751.7750.4740.0
52°704.7596.5554.8532.8523.1518.0501.7
60°661.5576.5535.1503.2490.9484.1464.5
75°630.1562.6515.5465.7442.9431.5411.6
90°625.2544.8508.8461.0410.2386.8366.1
110°613.8532.3463.6428.6401.4378.4312.1
120°628.7541.6470.9408.5376.8350.9307.2
135°700.9576.8510.1442.5383.2328.7265.6
150°826.9651.7570.9510.9449.0396.3280.0
Run VMG954.8752.5657.4590.0518.5457.6323.3
Selected Courses
Windward / Leeward1020.0819.4724.2675.0635.1604.0531.7
All purpose782.3649.3580.9536.0502.4478.0429.1
Single Number Scoring Options
CourseTime On DistanceTime On Time
Windward / Leeward694.30.8642
All purpose550.81.0894
 
Custom scoring options for Australia
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Custom scoring options for Austria
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Brazil
Single NumberTime On Time
Upwind "bolina"0.7286
Downwind "popa"0.9873
70% up, 30% down "Ilhabela"0.7907
30% up, 70% down "Ilhabela-inverso"0.8922
Custom scoring options for Bulgaria
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Predominantly Upwind615.00.9756
Predominantly Downwind545.91.0991
Custom scoring options for Canada
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low715.80.8382
Triple Number All Purpose Medium552.01.0869
Triple Number All Purpose High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Predominantly Upwind615.00.9756
Predominantly Downwind545.91.0991
Predominantly Upwind Low811.70.7392
Predominantly Upwind Medium644.60.9308
Predominantly Upwind High599.21.0014
Predominantly Downwind Low764.00.7853
Predominantly Downwind Medium544.61.1018
Predominantly Downwind High396.31.5139
Chicago-Mac Upwind0.9580
Chicago-Mac All Purpose1.0127
Chicago-Mac Downwind1.0736
Bayview-Mac Cove Island0.9408
Bayview-Mac Shore0.9458
Victoria-Maui1.2030
Custom scoring options for Cyprus
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Denmark
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Spain
Single NumberTime On Distance
Coastal/Long Distance600.9
Triple Number Coastal/Long Distance Low715.8
Triple Number Coastal/Long Distance Medium552.0
Triple Number Coastal/Long Distance High465.8
Triple Number Windward/Leeward Low919.7
Triple Number Windward/Leeward Medium693.5
Triple Number Windward/Leeward High584.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Estonia
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Finland
Single NumberTime On DistanceTime On Time
FinRating (Coastal/Long Distance)600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for France
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Custom scoring options for Germany
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8382
Triple Number Coastal/Long Distance Medium1.0869
Triple Number Coastal/Long Distance High1.2882
Triple Number Windward/Leeward Low0.6524
Triple Number Windward/Leeward Medium0.8652
Triple Number Windward/Leeward High1.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Greece
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Hungary
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Custom scoring options for Israel
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Italy
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Japan
Single NumberTime On DistanceTime On Time
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Korea
Single NumberTime On Distance
Triple Number Coastal/Long Distance Low715.8
Triple Number Coastal/Long Distance Medium552.0
Triple Number Coastal/Long Distance High465.8
Triple Number Windward/Leeward Low919.7
Triple Number Windward/Leeward Medium693.5
Triple Number Windward/Leeward High584.6
Predominantly Upwind615.0
Predominantly Downwind545.9
Predominantly Reaching523.5
Custom scoring options for Lithuania
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Netherlands
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8382
Triple Number Coastal/Long Distance Medium1.0869
Triple Number Coastal/Long Distance High1.2882
Triple Number Windward/Leeward Low0.6524
Triple Number Windward/Leeward Medium0.8652
Triple Number Windward/Leeward High1.0263
Coastal/Long Distance0.9985
Predominantly Upwind0.9756
Predominantly Downwind1.0991
Custom scoring options for Norway
Single NumberTime On Time
Distanseseilas (NOR-rating ett tall)0.9985
Tretall Distanseseilas Lite vind0.8382
Tretall Distanseseilas Mellomvind1.0869
Tretall Distanseseilas Mye vind1.2882
Tretall Pølsebane Lite vind0.6524
Tretall Pølsebane Mellomvind0.8652
Tretall Pølsebane Mye vind1.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Distanseseilas1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Portugal
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Coastal/Long Distance600.90.9985
Custom scoring options for Russia
Single NumberTime On DistanceTime On Time
Predominantly Upwind615.00.9756
Predominantly Downwind545.91.0991
Custom scoring options for South Africa
Single NumberTime On DistanceTime On Time
Cape Doctor Inshore553.41.0843
Cape Doctor Coastal443.81.3520
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Custom scoring options for Slovenia
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8382
Triple Number Coastal/Long Distance Medium1.0869
Triple Number Coastal/Long Distance High1.2882
Triple Number Windward/Leeward Low0.6524
Triple Number Windward/Leeward Medium0.8652
Triple Number Windward/Leeward High1.0263
Custom scoring options for Switzerland
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8382
Triple Number Coastal/Long Distance Medium1.0869
Triple Number Coastal/Long Distance High1.2882
Triple Number Windward/Leeward Low0.6524
Triple Number Windward/Leeward Medium0.8652
Triple Number Windward/Leeward High1.0263
Custom scoring options for Sweden
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Predominantly Upwind615.00.9756
Predominantly Downwind545.91.0991
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for Ukraine
Single NumberTime On DistanceTime On Time
Coastal/Long Distance600.90.9985
Triple Number Coastal/Long Distance Low715.80.8382
Triple Number Coastal/Long Distance Medium552.01.0869
Triple Number Coastal/Long Distance High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1013.5771.2653.5576.0523.2480.3400.5
Custom scoring options for United States of America
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low715.80.8382
Triple Number All Purpose Medium552.01.0869
Triple Number All Purpose High465.81.2882
Triple Number Windward/Leeward Low919.70.6524
Triple Number Windward/Leeward Medium693.50.8652
Triple Number Windward/Leeward High584.61.0263
Predominantly Upwind615.00.9756
Predominantly Downwind545.91.0991
Predominantly Upwind Low811.70.7392
Predominantly Upwind Medium644.60.9308
Predominantly Upwind High599.21.0014
Predominantly Downwind Low764.00.7853
Predominantly Downwind Medium544.61.1018
Predominantly Downwind High396.31.5139
Chicago-Mac Upwind0.9580
Chicago-Mac All Purpose1.0127
Chicago-Mac Downwind1.0736
Bayview-Mac Cove Island0.9408
Bayview-Mac Shore0.9458
Harvest Moon Regatta468.21.2815
Victoria-Maui1.2030
5-Band
Windward/Leeward		Time On DistanceTime On Time
5-Band Low1004.60.5973
5-Band Low / Medium844.00.7109
5-Band Medium682.40.8792
5-Band Medium / High602.90.9952
5-Band High544.21.1026
ORC Ref  043900029NIIssued on 06/10/2022Valid until 28/02/2023
VPP ver: 2022 1.04 | © ORC | www.orc.org

Club
One Design
 Certificate
2022

Boat

ALPHA

ISR24A

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMELGES 24 ODMeasurement19/03/1996HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA7.509Max. Beam2.490Draft1.525Displacement821Wetted area10.12IMS L7.241LSM06.689Acc. length7.509Sink (kg/mm) 8.78
VCGD0.040VCGM0.020RM Measured (kg·m) 25.0RM Default (kg·m) 26.5Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1
P8.818IG8.620ISP9.777MDT10.076MDL10.120MDT20.062MDL20.075TL1.578MW0.114GO0.114
E3.800J2.506BAS1.000FSD0.000SFJ0.200SPLWPLTPS4.106BD0.103MWT28.00MCG3.150
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date16/03/2017MeasurerComment
SFFP0.130FFMFF0.883LCFcl4.135SG1.0225
SAFP7.370FAMFA0.599LCFsh4.315HBI0.799
W118.5W218.5W318.5W418.5
PD1427.9PD2432.4PD3428.3PD4436.5
WD7.400PLM9000.00GSA1.0RSA1.0
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCG1EngineMIN 12kg OUTBOARDTotal deductible
ORC Ref  043900029NIIssued on 06/10/2022Valid until 28/02/2023
VPP ver: 2022 1.04 | © ORC | www.orc.org

Club
One Design
 Certificate
2022

Boat

ALPHA

ISR24A

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateMakerMaterialCommentM0.180.931.682.703.3321.38CLASS RULES & MEAS
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateMakerMaterialCommentH0.050.400.761.422.092.788.56NoNo 12.13CLASS RULES
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateMakerMaterialCommentA11.5911.0811.345.866.3093%56.18CLASS RULES & MEAS
ORC Ref  043900029NIIssued on 06/10/2022Valid until 28/02/2023
VPP ver: 2022 1.04 | © ORC | www.orc.org