Marine Engine Q &A-Electrical Emergency Electrical power

Emergency Electrical Power Cobra CPI 1575 1500 Watt 12 Volt DC to 120 Volt AC Power Inverterfor Passenger and General cargo Vessel.

General cargo Vessel

In all Passenger and cargo vessels a number of essential services must be able to be maintained under emergency conditions. The requirements vary with type of ship and length of voyage. Self- contained emergency sources- of -electrical power must be installed in positions such that they are unlikely to be damaged or affected by any incident which has caused the loss of main power. The emergency generator with its Switchboard is thus located in a compartment which is outside of and away from main and auxiliary machinery spaces above the uppermost continuous deck and not forward of the collision bulkhead The same ruling a lies to batteries with the exception that accumulator batteries must not be fitted in the same space as any emergency Switchboard.

An emergency source of power should be capable of operating with a list of up to 22½º and a trim of up to 10°. The compartment should be accessible from the open deck

Passenger Vessels

Emergency generators for passenger vessels are now required to be automatically started and connected within 45 seconds. A set of automatically connected emergency batteries capable of carrying certain essential items for thirty minutes. is also required.  Alternatively, batteries are permitted as the main emergency source of power.

Regulations specify the supply of emergency power to essential services on passenger ships for a period of up to36 hours. A shorter period is allowed in vessels such as ferries. Some of the essential services may be .operated by other than electrical means (such as hydraulically controlled watertight doors), others may have their own electrical power. If the batteries are the only source of power the must sup the emergency load without recharging or excessive voltage drop (12% limit) or the required length of time. Because the specified period is up to 36 hours, batteries are used normally as a temporary power source with the emergency generator taking over essential supplies when it starts.Ship Passenger Lists: National and New England (1600-1825)

      Batteries fitted to provide temporary or transitional power supply emergency lights, navigation lights, and watertight door circuits including alarms and indicators, and internal communication systems. In addition they could Supply fire detection and alarm installations, manual fire alarms, fire door release, gear, internal signals, ships whistle and daylight signalling lamp. But some of these will have their own power or take it from a low-pressure D.C. system. Sequential watertight door closure by transitional batteries is acceptable.

The emergency generator when started supplies essential services through its own switchboard including the load taken initially by the transitional batteries. Additionally it would provide power for the-emergency bilge pump; fire pump, sprinkler pump steering gear .and other items if they were fed through the emergency switchboard-

Arrangements are required to enable lifts to be brought to deck level in an emergency. Also, emergency lighting from transitional batteries is required in all alleyways, stairs, exits, boat stations (deck and over side), control stations (bridge, radio room. engine control room, etc), machinery spaces and emergency machinery spaces.

Cargo Vessels

Emergency power for cargo ships is provided by accumulator battery or generator. Battery systems are automatically connected upon loss of the main supply, and in installations where the generator is not started and. connected within. 15 seconds automatically, are required as a transitional power source for at least 30 minutes.

Transactions, vol 32, 1924 (includes long article Cargo Vessels in the Great Lakes, as well as other items)The Port Montrea Cargo Vessel, September 2965 Framed Art Poster Print by Mirrorpix, 31x25Deadly Cargo,The Life of a Ship,Altamont The Vessel Board Short,Shorts for Men, 30,Black Acid Wash

Power available for emergencies must be sufficient to operate certain essential services simultaneously for up to18 hours. These are :emergency lights , navigation lights, internal communication equipment, daylight signalling lamp, ship’s whistle fire detection alarm installations, manual fire alarms; other internal emergency signals, the emergency fire pump, steering gear, navigation aids and other equipment Some essential services have their own power or are supplied from a low-pressure d.c. system. .

Transitional batteries are required to supply for 30 minutes power for emergency lighting, general alarm, fire detection and alarm system; communication equipment and navigation lights.

Permanent Passenger: My Life on a Cruise Ship 

Permanent Passenger: My Life on a Cruise Ship 

Passenger Ship Technology 

And the Ship sails On - Criterion Collection