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VOYAGE(PASSAGE)PLANNINGPROCESS
Ifanchoringisnecessary,especiallyalongacoast,whatprecautionsarere-
quired?
Ifavesselemergencyoccurs,where,andunderwhatconditionsisassis-
tanceavailable?
Whatistheprocessfortakingthevesselundertow,ifneeded?
Whatlocalauthoritiesmustbenotifiedifacasualty,oilspill,orsubstantial
threatoccurs?
Nauticalchartswiththerouteofvoyage(track)
Onlyuptodate,officialnauticalchartsshouldbeusedforvoyageappraisaland
planningiAnyadditionalchartsandpublicationsneededfortheintendedpassage
shouldbeidentifiedandobtainedbeforedepartureiInthecaseofelectroniccharts,
sufficientpermits/licencesforobtainingthemonpassage(dynamiclicensing)
shouldbeconsideredwhenappraisingpaperandelectronicchartsduringpassage
planning[9]i
Thefollowingfactorsshouldbeconsideredwhenappraisingpaperandelectronic
chartsduringvoyageplanning:
Appropriatenessofscale(forcoastalandpilotageplanningandforplanning
eachalterationpoint,largescalechartsshouldbeusediForoceanpassage
planningandopenwaterlegs,thelargestscalechartsthatareappropriate
shouldbeused);
Accuracyofchartdata(PaperchartandRNCsourcedatadiagramsallowthe
reliabilityofchartdepthinformationtobeassessediTheCategoryZoneof
Confidence(CATZOC)allowstheaccuracyandreliabilityofENCdatatobe
assessediFuturedetailsofCATZOCsymbolsandtheirmeaningscanbe
foundinrelevanthydrographicofficepublicationeigiUKHONP5012for
Britishcharts)i
NoticestoMariners(NoticestoMarinersshouldbeconsultedandconsider-
ingiSomehydrographicofficesalsoissueTemporaryandPreliminary(T&P)
NoticetoMarinersfortheirelectronicchartsaswellaspaperchartsi
Additionalinformationtothatfoundonchartsmaybecontainedonsailing
directionsandshouldbeconsulted[9]i
ENCs,RNCsandpaperchartsareusuallybasedonthesamehydrographicsurvey
dataiThismeansthatanENCisnotmoreaccuratethanRNCorpaperchartscovering
thesameareai
Thenavigationofficer(NO)afteraselectionthemostappropriatechartsand
publicationsfromcataloguesprovidescheckingofpresencethesechartsandpubli-
cationonboard,andthencheckstheirupdateiIftherequirededitionsofanycharts
andpublicationsarenotonboard,theymustberequisitionedurgentlyi
Threatsarethendefined,andtheUnderKeelClearance(UKC)forvariousstages
ofthepassage,andtheAirClearance(AC)ifthereisabridgeontheroadareestab-
lishediTheNOmustlaythechartsinsequenceandselectstherouteiAfterthatthe
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