Marine electronics covers the onboard systems that help you navigate, communicate, monitor and automate tasks at sea — chartplotters and GPS, VHF and other radios, AIS, radar, depth sounders, instruments, autopilots, onboard networks and the wiring, power supplies and antennas that connect them. On any Australian boat from trailer-sailers to offshore fishing boats and coastal cruisers, these components are central to safe, effective voyaging and must be installed, integrated and maintained correctly.
You need a marine electronics technician when fitting new equipment, replacing old units, fixing intermittent faults, integrating different devices so they share data, or commissioning critical safety systems. A competent technician will not only fit the hardware but check antenna placement, network configuration, power management, waterproofing and corrosion protection, perform sea trials and hand over system documentation so you can operate and maintain the gear.
Costs, lead times and regulatory requirements vary widely depending on vessel size, how much existing wiring or structural work is involved, and whether radio equipment needs formal commissioning under maritime radio rules. This page explains what marine electronics technicians actually do, what a good job looks like, the typical steps an installation or repair involves, and the specific questions and checks you should make before booking a job. Use this to prepare for informed conversations and to assess work quality once it’s completed.