International
One Design
 Certificate
2024

Boat

X-79 ONE DESIGN

MNA-1234

Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles42.7°40.6°38.1°37.3°37.2°37.4°38.3°40.8°
Beat VMG3.323.974.384.514.564.584.554.39
52°5.005.766.106.246.306.356.396.35
60°5.235.916.236.406.486.546.626.62
75°5.366.006.346.596.766.877.037.10
90°5.266.036.406.656.927.157.477.71
110°5.256.096.566.947.277.548.088.70
120°5.095.986.486.917.357.868.9710.16
135°4.585.546.206.637.067.549.4612.34
150°3.804.835.686.256.657.058.0510.96
Run VMG3.294.194.945.616.126.507.259.49
Gybe Angles145.3°150.5°153.9°166.3°177.7°178.1°177.5°142.3°
APH ToD:618.2CDL: 6.823APH ToT: 0.9706CertNo:X79
BOAT
ClassX-79 ODDesignerJEPPESENBuilderX-YACHTSAge dateSeries date01/1979Offset filex79.OD.OFFData filex79
HULL
Length Overall7.927 mMaximum Beam2.860 mDraft1.358 mDisplacement1,552 kgDLR7.2438IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight352 kg(declared)Minimum weight222 kg * when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail20.8821.30Headsail Luffed18.8318.83Headsail FlyingSymmetric48.8248.82Asymmetric
STORM SAIL AREAS (m²)
Trysail6.13Storm Jib4.25Heavy Weather Jib11.46
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment31.7 kg·mStability Index95.3
COMMENTS
ONE-DESIGN CERTIFICATE
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  02920002U3EIssued on 11/01/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org

International
One Design
 Certificate
2024

Boat

X-79 ONE DESIGN

MNA-1234

Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1085.4906.2821.6797.6789.2785.9790.5820.4
52°720.3625.5589.8576.9571.1567.2563.4566.9
60°688.2609.2577.9562.5555.6550.4544.0544.1
75°672.0600.2567.4546.3532.4524.3512.2507.1
90°684.8597.4562.8541.5520.4503.7481.6467.1
110°685.5591.3548.9518.5495.1477.3445.6413.7
120°707.2602.4555.7520.7489.6458.0401.3354.2
135°786.0650.0580.9543.1510.2477.7380.7291.8
150°946.3744.8633.9576.2541.5511.0447.5328.5
Run VMG1092.7859.6728.3641.3588.2553.9496.7379.3
Selected Courses
Windward / Leeward1089.0882.9775.0719.5688.7669.9643.6599.8
All purpose839.7702.1635.3600.7579.1562.5532.5499.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward750.50.7995
All purpose618.20.9706
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7028
Downwind "popa"0.8466
70% up, 30% down "Ilhabela"0.7405
30% up, 70% down "Ilhabela-inverso"0.7976
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Predominantly Upwind668.00.8982
Predominantly Downwind625.40.9593
Custom scoring options for Canada
Scoring OptionTODTOT
Predominant Upwind666.20.9007
Predominant Reaching602.80.9953
Predominant Downwind602.80.9953
Predominant Upwind - Low837.90.7161
Predominant Upwind - Low/Med717.40.8363
Predominant Upwind - Medium650.50.9224
Predominant Upwind - Med/High617.80.9712
Predominant Upwind - High599.71.0004
Predominant Reaching Low756.60.7930
Predominant Reaching Low/Med648.20.9256
Predominant Reaching Medium581.41.0319
Predominant Reaching Med/High534.41.1228
Predominant Reaching High494.71.2130
Predominant Downwind Low756.60.7930
Predominant Downwind Low/Med702.70.8539
Predominant Downwind Medium606.60.9891
Predominant Downwind Med/High540.41.1104
Predominant Downwind High483.71.2405
Harvest Moon Regatta537.61.1160
Chicago-Mac Upwind0.8852
Chicago-Mac All Purpose0.9121
Chicago-Mac Downwind0.9443
Bayview-Mac Cove Island0.8569
Bayview-Mac Shore0.8639
Scoring OptionTODTOT
5-Band Windward/Leeward Low1042.20.5757
5-Band Windward/Leeward Low/Med851.10.7050
5-Band Windward/Leeward Medium733.00.8186
5-Band Windward/Leeward Med/High672.80.8918
5-Band Windward/Leeward High640.60.9366
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Windward/Leeward 60-40 Low1042.70.5754
Windward/Leeward 60-40 Low/Med858.20.6991
Windward/Leeward 60-40 Medium748.00.8021
Windward/Leeward 60-40 Med/High695.90.8622
Windward/Leeward 60-40 High671.40.8936
5-Band AP Low808.40.7422
5-Band AP Low/Med683.90.8774
5-Band AP Medium608.10.9867
5-Band AP Med/High563.41.0649
5-Band AP High532.01.1278
Triple Number AP Low770.90.7783
Triple Number AP Medium615.40.9750
Triple Number AP High555.41.0803
5-Band SF Bay Tour - Low987.80.6074
5-Band SF Bay Tour - Low/Med814.60.7365
5-Band SF Bay Tour - Medium710.70.8442
5-Band SF Bay Tour - Med/High657.10.9131
5-Band SF Bay Tour - High624.60.9605
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance669.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7783
Triple Number Coastal/Long Distance Medium0.9751
Triple Number Coastal/Long Distance High1.0803
Triple Number Windward/Leeward Low0.6085
Triple Number Windward/Leeward Medium0.8066
Triple Number Windward/Leeward High0.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low770.9
Triple Number Coastal/Long Distance Medium615.3
Triple Number Coastal/Long Distance High555.4
Triple Number Windward/Leeward Low986.0
Triple Number Windward/Leeward Medium743.9
Triple Number Windward/Leeward High664.7
Predominantly Upwind668.0
Predominantly Downwind625.4
Predominantly Reaching602.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7783
Triple Number Coastal/Long Distance Medium0.9751
Triple Number Coastal/Long Distance High1.0803
Triple Number Windward/Leeward Low0.6085
Triple Number Windward/Leeward Medium0.8066
Triple Number Windward/Leeward High0.9026
Coastal/Long Distance0.8963
Predominantly Upwind0.8982
Predominantly Downwind0.9593
For information
General Purpose Handicap (GPH)688.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7783
Tretall Distanseseilas Mellomvind0.9751
Tretall Distanseseilas Mye vind1.0803
Tretall Pølsebane Lite vind0.6085
Tretall Pølsebane Mellomvind0.8066
Tretall Pølsebane Mye vind0.9026
Distanseseilas ett tall (OSN 8-16kn)0.8963
Distanseseilas ett tall (APH 6-20kn)0.9706
Enkeltall Motvind0.8982
Enkeltall Medvind0.9593
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Coastal/Long Distance669.40.8963
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind668.00.8982
Predominantly Downwind625.40.9593
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore613.00.9788
Cape Doctor Coastal509.31.1780
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7783
Triple Number Coastal/Long Distance Medium0.9751
Triple Number Coastal/Long Distance High1.0803
Triple Number Windward/Leeward Low0.6085
Triple Number Windward/Leeward Medium0.8066
Triple Number Windward/Leeward High0.9026
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7783
Triple Number Coastal/Long Distance Medium0.9751
Triple Number Coastal/Long Distance High1.0803
Triple Number Windward/Leeward Low0.6085
Triple Number Windward/Leeward Medium0.8066
Triple Number Windward/Leeward High0.9026
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Predominantly Upwind668.00.8982
Predominantly Downwind625.40.9593
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance669.40.8963
Triple Number Coastal/Long Distance Low770.90.7783
Triple Number Coastal/Long Distance Medium615.30.9751
Triple Number Coastal/Long Distance High555.41.0803
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1089.4834.0706.8638.5600.0566.5506.1470.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Predominant Upwind666.20.9007
Predominant Reaching602.80.9953
Predominant Downwind602.80.9953
Predominant Upwind - Low837.90.7161
Predominant Upwind - Low/Med717.40.8363
Predominant Upwind - Medium650.50.9224
Predominant Upwind - Med/High617.80.9712
Predominant Upwind - High599.71.0004
Predominant Reaching Low756.60.7930
Predominant Reaching Low/Med648.20.9256
Predominant Reaching Medium581.41.0319
Predominant Reaching Med/High534.41.1228
Predominant Reaching High494.71.2130
Predominant Downwind Low756.60.7930
Predominant Downwind Low/Med702.70.8539
Predominant Downwind Medium606.60.9891
Predominant Downwind Med/High540.41.1104
Predominant Downwind High483.71.2405
Harvest Moon Regatta537.61.1160
Chicago-Mac Upwind0.8852
Chicago-Mac All Purpose0.9121
Chicago-Mac Downwind0.9443
Bayview-Mac Cove Island0.8569
Bayview-Mac Shore0.8639
Scoring OptionTODTOT
5-Band Windward/Leeward Low1042.20.5757
5-Band Windward/Leeward Low/Med851.10.7050
5-Band Windward/Leeward Medium733.00.8186
5-Band Windward/Leeward Med/High672.80.8918
5-Band Windward/Leeward High640.60.9366
Triple Number Windward/Leeward Low986.00.6085
Triple Number Windward/Leeward Medium743.90.8066
Triple Number Windward/Leeward High664.70.9026
Windward/Leeward 60-40 Low1042.70.5754
Windward/Leeward 60-40 Low/Med858.20.6991
Windward/Leeward 60-40 Medium748.00.8021
Windward/Leeward 60-40 Med/High695.90.8622
Windward/Leeward 60-40 High671.40.8936
5-Band AP Low808.40.7422
5-Band AP Low/Med683.90.8774
5-Band AP Medium608.10.9867
5-Band AP Med/High563.41.0649
5-Band AP High532.01.1278
Triple Number AP Low770.90.7783
Triple Number AP Medium615.40.9750
Triple Number AP High555.41.0803
5-Band SF Bay Tour - Low987.80.6074
5-Band SF Bay Tour - Low/Med814.60.7365
5-Band SF Bay Tour - Medium710.70.8442
5-Band SF Bay Tour - Med/High657.10.9131
5-Band SF Bay Tour - High624.60.9605
ORC Ref  02920002U3EIssued on 11/01/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org

International
One Design
 Certificate
2024

Boat

X-79 ONE DESIGN

MNA-1234

Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassX-79 ODMeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA7.927Max. Beam2.860Draft1.358Displacement1,552Wetted area12.28IMS L6.638LSM05.983Acc. length7.927Sink (kg/mm) 9.24
VCGD0.056VCGM0.152RM Rated (kg·m) 31.7Limit of positive stability(°) 103.1Stability Index95.3Default crew weight331Declared crew weight352
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays2Spreaders1Rotating mastNo
P10.000IG9.210ISP9.450MDT10.080MDL10.120MDT20.052MDL20.065TL1.900MW0.120GO0.120
E3.500J2.750BAS1.190FSD0.000SFJ0.000SPL2.830WPLTPSBD0.115MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date01/03/2013
SFFP0.509FFM0.850FF0.853LCFcl4.255SG1.0110
SAFP7.625FAM0.800FA0.802LCFsh4.481HBI0.823
W129.0W229.0W329.0W429.0
PD1602.4PD2601.8PD3602.0PD4601.1
WD8.360PLM9000.00GSA1.0RSA1.0RM31.7
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  02920002U3EIssued on 11/01/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org

International
One Design
 Certificate
2024

Boat

X-79 ONE DESIGN

MNA-1234

MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.140.741.302.242.9820.88* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC0.054.149.00NoNo 18.83* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC9.259.259.256.684.9548.82* Copied from legacy *
ORC Ref  02920002U3EIssued on 11/01/2024Valid until 31/12/2024
VPP ver: 2024 1.00 | © ORC | www.orc.org