This work investigates the historical development and operational evolution of Australia's Coast Radio Service as a critical component of maritime safety and national infrastructure. Lawrence Durrant provides a detailed account of the service's origins, tracing how radio technology transformed the ability to monitor and protect the vast Australian coastline. The text utilizes historical records and technical documentation to frame the service not merely as a communication network, but as a vital lifeline for mariners navigating the surrounding oceans.

This text serves as a specialized historical record, offering a dense and technical examination of Australia's maritime communication infrastructure. The inclusion of an index and bibliography suggests it is intended for researchers and those with a specific interest in the history of telecommunications and maritime safety.