442703/B
69
Heatingrequirements
Heatingisaneffectivemethodforreducinghumidity.Theheaterinthesonarroommust
dimensionedtomaintaintheequipmentwithinitsenvironmentaltolerances.Typical
heatingpowerisminimum1000W.Theheatermustbeinstalledclosetothedeck.
Ventilationrequirements
Thesonarroommustbeconnectedtothevessel'sventilationsystemtoensureasupply
ofcoolingair.Ifaventilationsystemisnotavailable,installtwo3”pipesfromthesonar
roomtoasuitablefreshairlocationondeck.
Thefreshairshouldentertheroomasclosetotheooraspossible,andshouldbe
extractedfromashighaspossible.Afunnelshapeddrip-collectormustbemounted
belowtheventpipestodivertmoisturetothebilge.Onthemaindeck,thebest
ventilationisprovidedwhentheoutletpipeisatleastfourmetershigherthantheinlet
pipe.Tokeepoutseawater,rainandspray,theventilationpipesmustbettedwith
goosenecksoranequivalentdesign.
Note
Ifthevesselislikelytooperateintropicalconditions,asuitableairconditioningsystem
mustbeinstalled.Theairconditioningsystemmustbeabletoprovideanambient
temperaturethatdoesnotexceedthemaximumoperatingtemperaturesoftheST90
unitsthatareinstalledintheroom.
Relatedtopics
Sonarroomrequirements,page66
Requirementsforelectricalinstallations,cablesand
communication
Theelectricalinstallationsinthesonarroommustmeetminimumrequirementsto
providesuitablelightsandsupplypower.
Lightrequirements
Thesonarroommustbeequippedwithsuitablelightingtosimplifytheinstallation
andtoaidfuturemaintenance.
Communicationrequirements
Thesonarroommustbeequippedwithatelephone,anintercomsystem,oranyother
meansoforalcommunicationbetweenthesonarroomandthebridgeand/orcontrol
room(s).
Preparations
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