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Description
Install, troubleshoot, and maintain marine electronic and electrical systems on boats and ships, including radar, sonar, GPS/AIS, VHF/satellite communications, navigation, security, and surveillance equipment.
Job tasks Attributes
  • • Inspect and test marine electronic and electrical systems to diagnose faults using visual checks, multimeters, NMEA analyzers, and diagnostic software.
  • • Reassemble equipment and verify operation at the dock and during sea trials.
  • • Splice and terminate marine-grade wiring; crimp, solder, and heat-shrink connections to equipment and fixtures.
  • • Install breakers, fuses, marine cables, batteries, chargers, inverters, and shore-power connections as required.
  • • Locate and repair circuit faults such as blown fuses, corroded connectors, water intrusion, shorts, or failed modules.
  • • Adjust, repair, or replace defective wiring, relays, and connectors in navigation lighting, bilge, engine monitoring, HVAC, and safety alarm systems using electrician's tools.
  • • Use wiring diagrams, NMEA/ABYC standards, and manufacturers' manuals to trace circuits and isolate problems.
  • • Maintain detailed service logs, configurations, and parts usage.
  • • Cut and drill openings for displays, antennas, transducers, and panels using marine tools; seal penetrations to remain watertight.
  • • Measure, route, and secure wiring harnesses, conduit, cable trays, and NMEA 2000 backbones to connect control panels and junction boxes.
  • • Install marine electronics such as radar, GPS/chartplotters, AIS, VHF, satellite communications, depth sounders, autopilots, and CCTV.
  • • Install switch panels, breakers, busbars, terminal strips, outlets, and junction boxes.
  • • Configure and calibrate radars, compasses, autopilots, sensors, and charting systems; update firmware and charts.
  • • Confer with captains, owners, or vessel engineers to determine symptoms and operational needs.
  • • Estimate parts, labor, and haul-out or travel costs for installations and repairs.
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Source
Tasks & skills: O*NET occupational data (work activities, skills, knowledge). Learn more
Sources & Standards: This site includes information from O*NET by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. Career Clutch has modified some of this information for student readability. USDOL/ETA has not approved, endorsed, or tested these modifications. O*NET® is a trademark of USDOL/ETA.
Last reviewed: Jan 2026
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