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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 | 43.3° | 42.4° | 40.2° | 38.1° | 37.5° | 37.6° | 38.6° |
| Beat VMG | 3.00 | 3.67 | 4.18 | 4.50 | 4.59 | 4.60 | 4.58 |
| 52° | 4.60 | 5.53 | 6.00 | 6.30 | 6.47 | 6.54 | 6.60 |
| 60° | 4.88 | 5.76 | 6.17 | 6.53 | 6.82 | 6.92 | 7.00 |
| 75° | 5.10 | 5.90 | 6.32 | 6.78 | 7.29 | 7.62 | 7.84 |
| 90° | 5.43 | 6.23 | 6.72 | 7.03 | 7.38 | 8.08 | 8.93 |
| 110° | 5.51 | 6.32 | 7.09 | 7.81 | 8.30 | 8.78 | 9.72 |
| 120° | 5.36 | 6.22 | 6.94 | 7.88 | 8.82 | 9.47 | 10.78 |
| 135° | 4.83 | 5.89 | 6.52 | 7.25 | 8.21 | 9.32 | 12.68 |
| 150° | 4.12 | 5.21 | 5.96 | 6.46 | 7.09 | 7.93 | 11.01 |
| Run VMG | 3.57 | 4.51 | 5.17 | 5.60 | 6.14 | 6.87 | 9.53 |
| Gybe Angles | 144.8° | 148.0° | 150.7° | 147.8° | 144.8° | 143.7° | 138.8° |
APH: 598.0
CDL: 6.824
GPH: 672.9
CertNo: J-70
BOATClassJ-70 ONE DESIGNDesignerJOHNSTONEBuilderJ BOATSAge date02/2013Series date02/2012Offset fileJ70.odData filej70
HULLLength Overall6.910 mMaximum Beam2.254 mDraft1.383 mDisplacement810 kgDLR3.4339IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.325%
PROPELLERInstallationNo PropellerTypeN/ADiameterN/A
CREWMaximum weight340 kgMinimum weight255 kg
* when appliedNon Manual PowerNoCrew Arm Extension0.50 m
SAIL AREAS
(m²)
MeasuredRatedMainsail15.4616.12Headsail Luffed10.0010.00Headsail FlyingSymmetricAsymmetric45.6445.64
(All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS
(m²)
Trysail4.02Storm Jib3.39Heavy Weather Jib9.13
SAIL LIMITSHeadsails5
* Woven polyester sails
Spinnakers4
STABILITYRighting Moment18.5 kg·mStability Index92.1
COMMENTSweight acc to OD class rules
incl outboard engine,
4 crew
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.
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Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)ClassJ-70 ONE DESIGNMeasurement01/02/2013HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA6.910Max. Beam2.254Draft1.383Displacement810Wetted area8.89IMS L6.670LSM06.178Acc. length6.910Sink (kg/mm)
7.57
VCGD0.018VCGM0.008RM Measured
(kg·m)
18.5RM Default (kg·m)
19.7Limit of positive stability(°)
100.8Stability Index92.1
PROPELLERPropeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIGForestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1
P7.975IG8.153ISP9.412MDT10.076MDL10.131MDT20.070MDL20.070TL1.000MW0.116GO0.136
E2.876J2.340BAS1.145FSD0.000SFJ0.175SPLWPLTPS4.025BD0.095MWT24.00MCG3.880
Flying Headsail Foretriangles
IdISPTPS
FLOTATION AND STABILITYCalculation methodPoles incliningFlotation Date01/02/2016MeasurerClass rules weightComment
SFFP0.155FFM0.790FF0.792LCFcl3.695SG1.0100
SAFP6.903FAM0.570FA0.571LCFsh3.854HBI0.673
W118.0W218.0W318.0W418.0
PD1601.1PD2600.9PD3602.2PD4603.0
WD7.870PLM9000.00GSA1.0RSA1.0
INVENTORYFixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCGEEngine OUTBOARD MIN.10kgTotal deductible
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MAINSAILIdMHBMUWMTWMHWMQWAreaMeas.DateMakerMaterialCommentORC0.370.881.432.142.5715.46
MIZZENIdMHBMUWMTWMHWMQWAreaMeas.DateMakerMaterialComment
HEADSAILIdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateMakerMaterialCommentORC0.060.350.651.251.862.458.00YesNo 10.00
SYMMETRIC SPINNAKERIdSLUSLESLSHWSFLAreaMeas.DateMakerMaterialComment
ASYMMETRIC SPINNAKERIdSLUSLESLSHWSFLRatioAreaMeas.DateMakerMaterialCommentORC10.808.809.805.565.7098%45.64
MIZZEN STAYSAILIdYSHFYSHWYSFLAreaMeas.DateMakerMaterialComment
QUADRILATERALIdQLEQHLQFLQCDQLMMastAreaMeas.DateMakerMaterialComment