The shaft generator has two modes of operation:
*PTO can improve ship EEDI figures
*PTI can deteriorate the EEDI figures if used for increasing the ship’s speed.
A power Management System (PMS) is installed in the ship’s engine room to look after the safety and operation of the power-generating machinery, which includes an auxiliary generator, turbine generator, and shaft generator.
The Shaft Generator – The motor circuit breaker is usually closed, if not, an operator can close the circuit breaker via the PMS panel. This command is released if sufficient apparent power is available. The two modes explained above are controlled by the PMS of the ship.