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Rated boat velocities in knots| Wind Velocity | 6 kt | 8 kt | 10 kt | 12 kt | 14 kt | 16 kt | 20 kt |
| Beat Angles | 42.8° | 41.8° | 39.8° | 38.6° | 38.3° | 38.6° | 39.8° |
| Beat VMG | 3.22 | 3.87 | 4.33 | 4.50 | 4.54 | 4.55 | 4.50 |
| 52° | 4.90 | 5.74 | 6.14 | 6.32 | 6.39 | 6.42 | 6.44 |
| 60° | 5.15 | 5.92 | 6.28 | 6.52 | 6.63 | 6.69 | 6.71 |
| 75° | 5.35 | 6.06 | 6.42 | 6.76 | 7.02 | 7.14 | 7.22 |
| 90° | 5.29 | 6.10 | 6.55 | 6.82 | 7.16 | 7.48 | 7.82 |
| 110° | 5.30 | 6.16 | 6.68 | 7.19 | 7.62 | 7.92 | 8.58 |
| 120° | 5.13 | 6.05 | 6.57 | 7.09 | 7.64 | 8.26 | 9.40 |
| 135° | 4.63 | 5.62 | 6.27 | 6.75 | 7.23 | 7.77 | 9.64 |
| 150° | 3.86 | 4.88 | 5.73 | 6.31 | 6.75 | 7.20 | 8.36 |
| Run VMG | 3.35 | 4.22 | 5.00 | 5.69 | 6.21 | 6.61 | 7.47 |
| Gybe Angles | 147.0° | 151.0° | 153.0° | 172.0° | 180.0° | 180.0° | 180.0° |
GPH = 683.3
CDL = 6.781
BOATClassX-79 OD𝕚DesignerJEPPESENBuilderX-YACHTSAge DateSeries Date01/1979Offset Filex79.OD
HULLLength Overall7.927 mMaximum Beam2.860 mDraft1.358 mDisplacement1 552 kgDLR6.1197IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLERInstallationNo PropellerTypeN/ADiameterN/A
CREWMaximum weight352 kg𝕚Minimum weight264 kg𝕚* when appliedNon Manual PowerNoCrew Arm Extension0.50 m
SAIL AREAS (m²)MeasuredRatedMainsail20.8821.30Headsail Luffed18.8318.83Headsail FlyingSymmetric48.82𝕚48.82𝕚Asymmetric
SAIL LIMITATIONSHeadsails5 Spinnakers4
STABILITYRighting Moment31.7 kg·mStability Index96.0
COMMENTSONE-DESIGN CLUB CERTIFICATE
OWNER
The owner certifies that he/she understands his/her responsibilities under ORC Rule and Regulations.
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Data in meters/kilograms (Metric)𝕚
HULL AND APPENDAGESClassX-79 OD𝕚LOA7.927𝕚VCGD0.056𝕚Measurement𝕚Max. Beam2.860𝕚VCGM0.152𝕚MeasurerKALL𝕚Draft1.358𝕚RM Measured (kg·m)31.7𝕚HIN𝕚Displacement1 552𝕚RM Default (kg·m)34.6𝕚Plan review𝕚IMS L6.620𝕚Limit of positive stability (°)103.6𝕚Hull ConstructionCored𝕚LSM06.330𝕚Stability Index96.0𝕚Carbon rudderNo𝕚Acc. length7.927𝕚Light stanchionsNo𝕚Wetted area12.28𝕚Trim tabNo𝕚Sink (kg/mm)9.24𝕚
PROPELLERPropeller TypeNo Propeller𝕚PIPA0.0000𝕚
RIG
Forestay tensionAft𝕚P10.000𝕚E3.500𝕚Inner stayNone Fitted𝕚IG9.210𝕚J2.750𝕚Carbon mastNo𝕚ISP9.450𝕚BAS1.190𝕚Headsail furlerNo𝕚MDT10.080𝕚FSD0.000𝕚Mainsail furlerNo𝕚MDL10.120𝕚SFJ0.000𝕚Articulated bowspritNo𝕚MDT20.052𝕚SPL2.830𝕚Non-circular riggingNo𝕚MDL20.065𝕚TPS𝕚Fiber riggingNo𝕚TL1.900𝕚BD0.115𝕚Runners/Checkstays2𝕚MW0.120𝕚MWT𝕚Spreaders1𝕚GO0.120𝕚MCG𝕚
FLOTATION AND STABILITYInclining TestPoles Inclining𝕚SFFP0.509𝕚SAFP7.625𝕚W129.0𝕚PD1602.4𝕚WD8.360𝕚Flotation Date01/03/2013𝕚FFM0.850𝕚FAM0.800𝕚W229.0𝕚PD2601.8𝕚PLM9000𝕚Measurer𝕚FF0.853𝕚FA0.802𝕚W329.0𝕚PD3602.0𝕚GSA1.0𝕚Comment𝕚LCFcl4.255𝕚LCFsh4.434𝕚W429.0𝕚PD4601.1𝕚RSA1.0𝕚SG1.0110𝕚
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MAINSAILIdMHBMUWMTWMHWMQWAreaMeasurerMeasurementManufacturerMaterialCommentORC𝕚0.14𝕚0.74𝕚1.30𝕚2.24𝕚2.98𝕚20.88𝕚𝕚𝕚𝕚𝕚𝕚
HEADSAILIdHHBHUWHTWHHWHQWHLPHLUBtnFlyingAreaMeasurerMeasurementManufacturerMaterialCommentORC𝕚0.05𝕚𝕚𝕚𝕚𝕚4.14𝕚9.00𝕚No𝕚No𝕚18.84𝕚𝕚𝕚𝕚𝕚𝕚
SYMMETRIC SPINNAKERIdSLUSLESLSHWSFLAreaMeasurerMeasurementManufacturerMaterialCommentORC𝕚9.25𝕚9.25𝕚9.25𝕚6.68𝕚4.95𝕚48.83𝕚𝕚𝕚𝕚𝕚𝕚