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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
| 24 kt
|
| Beat Angles | 41.5° | 39.2° | 37.3° | 36.6° | 36.2° | 35.9° | 35.7° | 36.4° |
| Beat VMG | 4.06 | 4.79 | 5.19 | 5.37 | 5.47 | 5.54 | 5.63 | 5.61 |
| 52° | 6.06 | 6.86 | 7.22 | 7.39 | 7.49 | 7.55 | 7.64 | 7.68 |
| 60° | 6.31 | 7.03 | 7.37 | 7.55 | 7.66 | 7.73 | 7.85 | 7.91 |
| 75° | 6.47 | 7.14 | 7.49 | 7.72 | 7.89 | 8.01 | 8.19 | 8.31 |
| 90° | 6.36 | 7.11 | 7.51 | 7.79 | 8.02 | 8.21 | 8.51 | 8.73 |
| 110° | 6.13 | 7.13 | 7.63 | 7.98 | 8.30 | 8.58 | 8.98 | 9.37 |
| 120° | 5.93 | 6.99 | 7.55 | 7.95 | 8.32 | 8.67 | 9.45 | 10.11 |
| 135° | 5.31 | 6.48 | 7.23 | 7.69 | 8.08 | 8.47 | 9.35 | 10.89 |
| 150° | 4.44 | 5.57 | 6.51 | 7.21 | 7.64 | 8.01 | 8.78 | 9.78 |
| Run VMG | 3.85 | 4.83 | 5.64 | 6.36 | 6.96 | 7.44 | 8.17 | 8.91 |
| Gybe Angles | 142.9° | 147.6° | 149.2° | 158.5° | 171.8° | 178.1° | 179.0° | 178.4° |
APH ToD:528.1CDL: 9.946APH ToT: 1.1362CertNo:35215
BOATClassYOK 41DesignerI.YOKOYAMABuilderTSUBOI, JAPANAge date08.1985Series date08.1985Offset fileJCBIY54.offData fileRU3521_Alaska
HULLLength Overall12.410 mMaximum Beam3.860 mDraft2.290 mDisplacement6 495 kgDLR7.4934IMS DivisionCruiser/RacerDynamic Allowance0.000%Age Allowance0.487%
PROPELLERInstallationShaft exposedTypeFeathering 2 bladesDiameter0.530m
CREWMaximum weight643 kg(default)Minimum weight513 kg
* when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS
(m²)
MeasuredRatedMainsail51.6652.53Headsail Luffed46.2646.26Headsail FlyingSymmetric92.2792.27Asymmetric107.62107.62
(All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS
(m²)
Trysail15.59Storm Jib10.49Heavy Weather Jib28.31
SAIL LIMITSHeadsails6
Spinnakers5
* Asymmetric may be tacked on the pole
STABILITYRighting MomentN/AStability 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.
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Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)ClassYOK 41Measurement09.06.2017HINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA12.410Max. Beam3.860Draft2.290Displacement6 495Wetted area26.81IMS L9.971LSM09.534Acc. length12.410Sink (kg/mm)
20.65
VCGD0.031VCGM0.004RM Rated
(kg·m)
160.7Limit of positive stability(°)
N/AStability IndexN/ADefault crew weight643Declared crew weightN/A
PROPELLERPropeller TypeFeathering 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.530PBWPIPA0.0036
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIGForestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footRunners/Checkstays2Spreaders3Rotating mastNo
P16.045IG14.480ISP14.530MDT10.108MDL10.180MDT2MDL2TLTaperMWGO
E5.550J4.290BAS1.785FSD0.035SFJ0.000SPL4.366WPLTPS5.300BDMWTMCG
Flying Headsail Foretriangles
IdISPTPS
FLOTATION AND STABILITYCalculation methodRM estimatedFlotation Date09.06.2023MeasurerRUS 92
INVENTORYFixed Ballast Total0
Total deductible
Total deductible
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MAINSAILIdMHBMUWMTWMHWMQWAreaMeas.DateComment20.221.102.003.454.5551.66
MIZZENIdMHBMUWMTWMHWMQWAreaMeas.DateComment
HEADSAILIdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment50.050.841.603.124.726.2514.70NoNo 46.2609.06.2017
SYMMETRIC SPINNAKERIdSLUSLESLSHWSFLAreaMeas.DateComment414.3514.3514.357.727.7092.27
ASYMMETRIC SPINNAKERIdSLUSLESLSHWSFLRatioAreaMeas.DateComment616.0014.5615.288.448.5099%107.6208.06.2023
MIZZEN STAYSAILIdYSHFYSHWYSFLAreaMeas.DateComment
QUADRILATERALIdQLEQHLQFLQCDQLMMastAreaMeas.DateComment
CRUISER/RACER REQUIREMENTS*Accommodation length12.4 mTable area0.55 m²Headroom1.83 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity160 lMinimum number of seats in cockpit
4
Food stowage0.30 m³Fuel capacity98 l
*This list refers to the calculated requirements. See IMS Appendix 1 for the complete list of requirements.