Offshore Systems has introduced an NMEA2000 AC Monitor to measure onboard AC voltage, current and frequency and report them over the vessel’s NMEA2000 network. The monitor is the latest addition to a range of vessel monitoring and control systems designed for the NMEA2000 network by Offshore Systems, and is certified to the NMEA2000 network standard. The AC Monitor can typically measure AC sources such as shore power, generators and invertors. It can also measure the voltage and frequency on AC Bus Bar Systems.