Abstract
A modern naval destroyer requires almost 183 000 m (60000 ft) of copper cable for information transfer between units of a given system or as interface connections between systems. Over a 30-year life cycle, the ship may undergo regular overhaul four times and an extensive modernization at least once. During each of these evolutions a large portion of the through-ship cabling installed for information transfer, data exchange or equipment control must be rerouted or replaced, at substantial cost. By multiplexing data exchange on a few coaxial cables, the Shipboard Data Multiplex System (SDMS) will replace or substantially reduce most through-ship signal cable requirements, and thus cost far less than a conventional fixed-wire installation. When reconfiguration is required at a later date, only changing short interface cables and inserting small Programable Read Only Memories (PROM's) into the multiplexers will be necessary. This paper outlines through-ship electrical cable requirements, wireway design and installation costs, and a comparison between SDMS and a conventional fixed-wire system for a major combatant.
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