The power rating of an emergency generator is determined by the size and role of the ship. On some small vessels a few kW will suffice for emergency lighting only. Larger and more... Read more
The Chief Electronic Engineer is responsible for the management of the electronic department onboard to include all electronic equipment and communication/IT systems. The Ch... Read more
Sudden load current surges (e.g. due to motor starting) on a generator cause a corresponding change in its output voltage. This is due to an internal voltage drop in the generator... Read more
An undervoltage (U/V) release mechanism is fitted to all generator breakers and some main feeder circuit-breakers. Its main function is to trip the breaker when a severe voltage di... Read more
Many forms of electrical protection on ship are available which are designed to protect the distribution system when a fault occurs. Protection relays are used to monitor overcurre... Read more
A ship shore-supply is required so that the ship’s generators and their prime-movers can be shut down for major overhaul during a dry-docking period. There must be a suitable... Read more
If a single earth fault occurs on the live line of an earthed ship distribution system it would be equivalent to a short-circuit fault across the generator through the ship’s... Read more
A ship’s electrical distribution scheme generally follows shore practice. This allows normal industrial equipment to be used on board ship after being “marinised”... Read more
The function of a ship’s electrical distribution system is to safely convey the generated electrical power to every item of consumer equipment connected to it. Probably the m... Read more
Generally, fault finding on ship is not an easy task. It is essential to have a good under-standing of the operation of the particular equipment and general insight into some of th... Read more
