
4345737/C
Installationprinciples............................................................................................................50
Sonarroomrequirements......................................................................................................54
Sonarroomrequirements............................................................................................54
Environmentalrequirements.......................................................................................54
Requirementforwatertightintegrity...........................................................................56
Sizeandaccessrequirements......................................................................................56
Requirementsforinsulation,heatingandventilation..................................................57
Requirementsforelectricalinstallations,cablesandcommunication........................58
Requirementsforbilgepumpanddecking..................................................................59
Wheretoinstallthetransducer.............................................................................................60
Introductiontotransducerlocation..............................................................................60
Mountthetransducerdeep..........................................................................................60
Avoidprotrudingobjectsnearthetransducer..............................................................62
Keepthetransducerfarawayfromthepropellers......................................................62
Chooseatransducerpositionfarawayfromthebowthruster(s)................................63
Summaryandgeneralrecommendations....................................................................63
Acousticnoise.......................................................................................................................65
Introductiontotheacousticnoisechallenge...............................................................65
Contributingfactors.....................................................................................................66
Electricalselfnoise.....................................................................................................67
Ambientnoise..............................................................................................................68
Fishinggearnoise........................................................................................................68
Electricalselfnoise.....................................................................................................69
Somemeanstoreduceacousticnoise.........................................................................69
Vesselcoordinatesystem......................................................................................................71
INSTALLINGTHETRANSDUCER.................................................74
Transducerdescription..........................................................................................................75
Transducerinstallationprinciples.........................................................................................79
Usingastreamlinedblister..........................................................................................79
Usingadropkeel.........................................................................................................81
Usingasteelconduittoprotectthetransducercables.................................................81
Inclinationangle..........................................................................................................83
Cableprotectionindropkeels.....................................................................................83
Transducerinstallationsummary..........................................................................................86
Designing,manufacturingandmountingtheinstallationblister..........................................89
Unpackingthetransducerfromitstransportcrate................................................................90
Installingthemountingring..................................................................................................93
SimradME70