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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 | 43.6° | 41.4° | 40.2° | 39.6° | 39.5° | 39.3° | 39.5° | 40.4° |
| Beat VMG | 2.80 | 3.41 | 3.83 | 4.10 | 4.22 | 4.28 | 4.31 | 4.27 |
| 52° | 4.27 | 5.07 | 5.60 | 5.90 | 6.05 | 6.11 | 6.16 | 6.16 |
| 60° | 4.49 | 5.28 | 5.79 | 6.07 | 6.22 | 6.29 | 6.35 | 6.36 |
| 75° | 4.60 | 5.43 | 5.94 | 6.23 | 6.41 | 6.52 | 6.62 | 6.68 |
| 90° | 4.63 | 5.55 | 6.09 | 6.34 | 6.47 | 6.63 | 6.85 | 6.96 |
| 110° | 4.70 | 5.66 | 6.22 | 6.55 | 6.77 | 6.94 | 7.19 | 7.35 |
| 120° | 4.53 | 5.52 | 6.15 | 6.52 | 6.80 | 7.04 | 7.47 | 7.77 |
| 135° | 4.11 | 5.09 | 5.85 | 6.31 | 6.63 | 6.90 | 7.41 | 7.93 |
| 150° | 3.51 | 4.44 | 5.18 | 5.71 | 6.06 | 6.34 | 6.78 | 7.20 |
| Run VMG | 3.04 | 3.85 | 4.49 | 4.94 | 5.26 | 5.75 | 6.38 | 6.80 |
| Gybe Angles | 145.0° | 145.9° | 145.7° | 146.6° | 169.4° | 173.6° | 176.8° | 177.2° |
APH ToD:675.2CDL: 6.516APH ToT: 0.8886CertNo:3234.01
BOATClassIW 31DesignerSPARKMAN&STEPHENSBuilderIW-VarvetAge date01.1972Series date01.1968Offset fileIW31.offData fileRU3234__KIS-KIS (1)
HULLLength Overall9.300 mMaximum Beam2.684 mDraft1.689 mDisplacement3 750 kgDLR11.5712IMS DivisionCruiser/RacerDynamic Allowance0.620%Age Allowance0.487%
PROPELLERInstallationShaft exposedTypeSolid 2 bladesDiameter0.340m
CREWMaximum weight403 kg(default)Minimum weight273 kg
* when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS
(m²)
MeasuredRatedMainsail16.7016.88Headsail Luffed25.2925.29Headsail FlyingSymmetricAsymmetric56.9256.92
(All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS
(m²)
Trysail5.10Storm Jib6.23Heavy Weather Jib16.82
SAIL LIMITSHeadsails1
Spinnakers4
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)ClassIW 31Measurement28.05.2022HIN5813Plan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.300Max. Beam2.684Draft1.689Displacement3 750Wetted area16.97IMS L7.245LSM06.868Acc. length8.723Sink (kg/mm)
11.62
VCGD-0.108VCGM-0.006RM Rated
(kg·m)
46.4Limit of positive stability(°)
N/AStability IndexN/ADefault crew weight403Declared crew weightN/A
PROPELLERPropeller TypeSolid 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.340PBW0.085PIPA0.0125
PSD0.025PHD0.050PHL0.065
PSA18.0°ESL0.410
ST10.012ST20.080ST30.100
ST40.045ST50.150
RIGForestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footRunners/Checkstays0Spreaders1Rotating mastNo
P10.010IG11.161ISP11.411MDT10.110MDL10.160MDT20.110MDL20.160TLNo TaperMWGO
E2.910J3.440BAS1.351FSD0.060SFJ0.300SPLWPLTPS3.455BD0.085MWTMCG
Flying Headsail Foretriangles
IdISPTPS
FLOTATION AND STABILITYCalculation methodRM estimatedFlotation Date28.05.2022
TANKSIdDescriptionCapacityLCGVCGSp.WghtLevel
Sailing005fresh water 35 litres352.20-0.301.0000004diesel fuel 25 litres257.00-0.420.8400
INVENTORYIdDescriptionWeight SailingLCGVCGGAIdDescriptionWeight SailingLCGVCGGA003heater Webasto6.450.20
0022.400.00
001Volvo MD16.17-0.65
INVENTORYFixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG005fresh water 35 litresWater3502.20-0.30004diesel fuel 25 litresFuel2507.00-0.42Total deductible0
OTHER ITEMSIdKindDescriptionWeightLCGVCG003Miscellaneousheater Webasto66.450.20002Battery402.400.00001EngineVolvo MD11306.17-0.65Total deductible0
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MAINSAILIdMHBMUWMTWMHWMQWAreaMeas.DateCommentM10.130.581.021.762.3716.7028.05.2022
MIZZENIdMHBMUWMTWMHWMQWAreaMeas.DateComment
HEADSAILIdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG10.040.561.122.283.534.8310.78NoNo 25.2910.04.2021
SYMMETRIC SPINNAKERIdSLUSLESLSHWSFLAreaMeas.DateComment
ASYMMETRIC SPINNAKERIdSLUSLESLSHWSFLRatioAreaMeas.DateComment011.3010.5010.906.246.3798%56.9228.05.2022
MIZZEN STAYSAILIdYSHFYSHWYSFLAreaMeas.DateComment
QUADRILATERALIdQLEQHLQFLQCDQLMMastAreaMeas.DateComment
CRUISER/RACER REQUIREMENTS*Accommodation length8.7 mTable area0.33 m²Headroom1.57 mMinimum number of berths3Personal gear stowage0.12 m³Fresh water capacity40 lMinimum number of seats in cockpit
4
Food stowage0.18 m³Fuel capacity24 l
*This list refers to the calculated requirements. See IMS Appendix 1 for the complete list of requirements.