Main engine alarm monitoring system for a ship; integrated access control and alarm monitoring system for a ship; alarm monitoring system for a ship; distributed control systems consisting of CPU and I/O cards that handle various devices and equipment for signaling temperatures, pressure and On/Off status in ships and software that displays the condition of devices on monitors and informs users of abnormal circumstance occurrences by generating an alarm; power management systems for a ship consisting of computer hardware and software to monitor the status of generators and main power circuit conditions, manually start/stop generators, manually synchronize, close and open main circuit breakers, fully automatically start and stop electric power lines and control the load of electric power lines; supervisory control and data acquisition systems consisting of computer hardware and software for collecting data from various sensors at a factory, plant or in other remote locations and sending this data to a central computer which then manages and controls the data; integrated automation systems for a ship consisting of computer hardware and software to monitor and control the following: machinery equipment consisting of the main engine, generators, pumps, and valve and oil transfer systems; cargo equipment consisting of cargo pumps, valves, re-gasification equipment, high duty compressors, ballast systems and loading/unloading systems; gas management systems; and oil and gas processing systems