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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 | 43.8° | 42.0° | 40.2° | 38.1° | 37.0° | 36.6° | 36.6° |
| Beat VMG | 3.11 | 3.81 | 4.33 | 4.66 | 4.82 | 4.90 | 4.96 |
| 52° | 4.76 | 5.70 | 6.24 | 6.51 | 6.65 | 6.73 | 6.81 |
| 60° | 5.02 | 5.92 | 6.40 | 6.65 | 6.81 | 6.90 | 7.01 |
| 75° | 5.16 | 6.04 | 6.52 | 6.80 | 6.99 | 7.15 | 7.34 |
| 90° | 5.15 | 6.16 | 6.68 | 6.97 | 7.17 | 7.31 | 7.62 |
| 110° | 5.14 | 6.16 | 6.71 | 7.08 | 7.41 | 7.72 | 8.44 |
| 120° | 4.93 | 5.99 | 6.60 | 6.99 | 7.35 | 7.72 | 8.63 |
| 135° | 4.37 | 5.47 | 6.27 | 6.73 | 7.08 | 7.42 | 8.22 |
| 150° | 3.70 | 4.74 | 5.61 | 6.30 | 6.72 | 7.05 | 7.71 |
| Run VMG | 3.20 | 4.11 | 4.86 | 5.57 | 6.15 | 6.59 | 7.23 |
| Gybe Angles | 145.1° | 146.5° | 151.0° | 160.4° | 173.6° | 179.0° | 179.0° |
APH: 609.7
CDL: 7.662
GPH: 686.8
CertNo: 0009.7
BOATClassYokoyama 30DesignerTokaiBuilderTokaiAge date11.1981Series date01.1981Offset fileJCBIY16b.offData fileRU0009 Princess
HULLLength Overall9.448 mMaximum Beam3.314 mDraft1.795 mDisplacement3 300 kgDLR8.6325IMS DivisionCruiser/RacerDynamic Allowance0.270%Age Allowance0.487%
PROPELLERInstallationShaft exposedTypeFolding 3 bladesDiameter0.450m
CREWMaximum weight760 kgMinimum weight570 kg
* when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS
(m²)
MeasuredRatedMainsail26.8227.15Headsail Luffed24.4524.45Headsail FlyingSymmetric47.1347.13Asymmetric57.1257.12
(All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS
(m²)
Trysail8.48Storm Jib5.17Heavy Weather Jib13.95
SAIL LIMITSHeadsails5
* Woven polyester sails
Spinnakers4
* Asymmetric may be tacked on the pole
STABILITYRighting MomentN/AStability IndexN/A
COMMENTSbulb - loa -1200 mm/ width -240 mm
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)ClassYokoyama 30Measurement31.05.2019HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.448Max. Beam3.314Draft1.795Displacement3 300Wetted area19.07IMS L7.849LSM07.257Acc. length9.448Sink (kg/mm)
13.29
VCGD0.090VCGM0.072RM Rated
(kg·m)
66.1Limit of positive stability(°)
N/AStability IndexN/A
PROPELLERPropeller TypeFolding 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.450PBW0.120PIPA0.0090
PSD0.025PHD0.100PHL0.120
PSA35.0°ESL0.600
ST10.010ST20.090ST30.100
ST40.050ST50.140
RIGForestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays2Spreaders2Rotating mastNo
P11.610IG10.163ISP10.763MDT10.092MDL10.145MDT2MDL2TLTaperMWGO
E4.170J3.050BAS1.300FSD0.029SFJSPL3.120WPLTPS3.930BDMWTMCG
Flying Headsail Foretriangles
IdISPTPS
FLOTATION AND STABILITYCalculation methodRM estimatedFlotation Date31.05.2019MeasurerRUS 92Comment
SFFP0.570FFMFF1.215LCFcl5.161SG
SAFP8.264FAMFA0.778LCFsh5.424HBI1.030
INVENTORYFixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCG#EngineVolvo MD2040 / MS2EL199Total deductible0
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MAINSAILIdMHBMUWMTWMHWMQWAreaMeas.DateComment20.150.751.352.403.3326.8222.08.2019
MIZZENIdMHBMUWMTWMHWMQWAreaMeas.DateComment
HEADSAILIdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment70.050.611.182.353.574.8910.20NoNo 24.4527.08.20191IZTMS0.060.571.112.273.454.709.94NoNo 22.9227.06.20191 old0.060.571.112.283.454.609.94NoNo 22.7827.06.201920.060.500.961.982.984.019.94NoNo 19.7727.06.201930.060.350.671.492.413.399.94NoNo 15.7527.06.2019
SYMMETRIC SPINNAKERIdSLUSLESLSHWSFLAreaMeas.DateComment310.3410.3410.345.535.2347.1330.08.2016
ASYMMETRIC SPINNAKERIdSLUSLESLSHWSFLRatioAreaMeas.DateComment511.7710.6011.196.046.4893%57.1214.08.2019
MIZZEN STAYSAILIdYSHFYSHWYSFLAreaMeas.DateComment
QUADRILATERALIdQLEQHLQFLQCDQLMMastAreaMeas.DateComment