Access Control and Intrusion Alarm Automatic Identification System (AIS) Autopilots Ballast Control Systems Bilge Alarm Units Boiler Control Systems Controllable Pitch Propeller Systems Engine Diagnostic Systems Inert Gas Plant Systems Oil Discharge Monitors (O.D.M.E.) Shaft RPM Systems Ship Safety and Security (SSAS) Tank Level Gauging Systems Temperature and Pressure Controllers Vibration Monitoring and Alarm Systems