d/c power systems general locations. there are two types of d/c power sources on the new fireboat:...

D/C Power Systems

General Locations

There are two types of D/C Power sources on the new fireboat:• 24 Volt• 12 VoltThese are further subdivided into three types of distributions:• D/C Main Services• D/C Emergency Services• Engine (Prime Mover) Starting

D/C Power Systems

• The 24V and 12V Main Power Systems provide power for devices and end users that are important to the operation of the fireboat.

• The 24V and 12V Emergency Power Systems provide power for devices and end users that are critical to operation of the fireboat.

• The Engine Starting batteries are independent to the engine they start, and are not tied into any of the 24V or 12V Service Systems.

D/C Power Systems

We will describe the 24V and 12V Main and Emergency Service Systems by starting in the wheelhouse, and working our way down into the machinery spaces – identifying each D/C Service System as we locate it.We will then describe the Engine Starting Battery systems in the Engine Room.

D/C Power Systems

D/C Power SystemsWheelhouse/CIC D/C Power Service Panels

Wheelhouse, Starboard Stack Bulkhead

As you enter the wheel house, you will see the D/C Power Service Panels.From left to right they are:• Panel DC 1 – 24VDC

Emergency Services• Panel DC 3 – 12VDC

Emergency Services• Panel DC 4 – 12VDC

Wheelhouse Services


Wheelhouse Starboard Stack Bulkhead

Panel DC 1 contains the following breakers:• General Alarm Back-up power• Nav. Lighting Back-up power• Its own voltmeter• Emergency Lighting Circuit 1• Emergency Lighting Circuit 2• FLIR Camera• Fire Detection and AMS Back-up power• Intercom/P.A.• Sound Powered Phones

(Lights/Indicators)• Auto Pilot• AIS• Engine Room Fan VFD Central Power


Wheelhouse, Starboard Stack Bulkhead

Panel DC 3 contains the following breakers:• UHF Radio #1 (WH Chart Table – LACoFire)• UHF Radio #2 (WH Chart Table – LACityFire)• VHF Radio #1 (WH Chart Table – LBFD 1)• VHF Radio #2 (WH AFT Console - Marine VHF)• VHF Radio #3 (Controls three radios in CIC: VHF 7 – LBFD

4, UHF 2 – LACityFire, and UHF 3 – LBPD. This may change as commissioning progresses)

• FWD NavNet Auxiliary Processor• Furuno Ethernet Switches• VHF Radio #4 (WH FWD Console – Marine VHF)• ARDF• Its own Voltmeter• Aft NavNet Master Processor• Aft NavNet Auxiliary Processor• Whistle• Horn

D/C Power Systems

Panel DC 4 contains the following breakers:• FWD Furuno Monitor #2• FWD NavNet Master Processor• DFF1 (Forward and Aft Sounder Processor)• UHF Radio #3 (WH Chart Table LBPD)• UHF Radio #4 (WH Chart Table MDT)• Ethernet and Routers• Aft Furuno Monitor #1• SAT Compass• VHF Radio #5 (WH Chart Table Marine VHF)• VHF Radio #6 (WH Chart Table LBFD 2)• VHF Radio #7 (Controls 2 radios in CIC: VHF 3 – LBFD 3, and

UHF1 – LACoFire. This may change as commissioning progresses)

• Its Own Voltmeter• FWD Furuno Monitor #1• SAT TV• Aft Furuno Monitor #2• Wind Display

Wheelhouse/CIC D/C Power Service PanelsWheelhouse, Starboard Stack Bulkhead

D/C Power SystemsWheelhouse/CIC D/C Power Battery Boxes

Boat Deck, in front of CIC

DC1 24 VDC Emergency Services Batteries:• Bank 1 – (2) 8D 12 Volt AGM in series• Bank 2 – (2) 8D 12 Volt AGM in series

DC3 12VDC Emergency Services Batteries:• Bank 1 – (1) 8D 12 Volt AGM in series• Bank 2 – (1) 8D 12 Volt AGM in series

DC4 12VDC Wheelhouse Services Batteries:• Bank 1 – (1) 8D 12 Volt AGM in series• Bank 2 – (1) 8D 12 Volt AGM in series

AGM = Absorbed Glass Media or“Gel-Cell”

D/C Power SystemsWheelhouse/CIC D/C Power Charges and Battery Breakers

CIC – Under the work stations

(1) Charger and Output Breakers for each 24 VDC and 12 VDC Wheelhouse/CIC Battery bank:• Chargers are

Mastervolt Chargemaster full automatic chargers

• Breakers are Blue Seas Systems 100 Amp output breakers

• Charges are connected and controlled through a Mastervolt Masterbus Network

D/C Power SystemsEngine Room 24 VDC Service PanelAft Hold, Stbd Foam Tank Bulkhead

Panel DC2 contains the following breakers:• Central Mach Alarm Monitor Back-up• Fwd Pump Engine Control• Aft Pump Engine Control• Port Main Engine RPM Control • Stbd Main Engine RPM Control• Fwd Pump Engine RPM Contol• Aft Pump Engine RPM Control• Deck Cran Controls• Port Main Engine Controls• Stbd Main Engine Contols• C-12 Pump Engine 3 RPM Control• C-12 Pump Engine 3 Engine Control• Port Genset Engine Control• Stbd Genset Engine Control

D/C Power SystemsEngine Room 24 VDC Batteries

Aft Hold, On Top of Stbd Foam Tank

In order to meet the power demand of this system, there are (2) pair of 12 Volt 8D AGM batteries.The pair are in series to create 24 Volts, and those pair are placed in parallel with another pair to increase the depth of power available .

There are (8) 8D batteries in this system, and they are difficult to access. A good day to call in sick when they need replacement!

D/C Power SystemsEngine Room 24 VDC Chargers and Battery Breakers

Aft Hold, Stbd Foam Tank, next to panel

(1) Charger and Output Breaker for each battery bank:• Chargers are



D/C Power SystemsFirefighting System 24 VDC Service Panel

VSP Room, Port, Outboard

Panel DC5 Contains the following breakers:• FiFi System Cabinet A• FiFi System Cabinet C• FiFi System Cabinet E• FiFi System Cabinet G• FiFi System Cabinet B• FiFi System Cabinet D• FiFi System Cabinet F• FiFi System Cabinet H• FiFi system Cabinet I

D/C Power SystemsFirefighting System 24 VDC Batteries


In order to meet the power demand of this system, there are (2) pair of 12 Volt 8D AGM batteries.The pair are in series to create 24 Volts, and those are placed in parallel with another pair to increase the depth of power available.

There are (8) 8D batteries in this system, and they are easier to access. Don’t need to call in sick on replacement day!

D/C Power SystemsFirefighting System 24 VDC Chargers and Battery Breakers


(1) Charger and Output Breaker for each battery bank:• Chargers are



Masterview Control and Monitoring Panel

D/C Power SystemsCharge control and monitoring

All 24 VDC and 12 VDC Battery banks and chargers are controlled and monitored through a Mastervolt Masterbus connect to a Mastervolt Masterview Control and Monitoring Panel in the wheelhouse.

D/C Power SystemsCharge control and monitoring

Masterview System Line Diagram

The D/C Power for engine starting comes from independent pairs of 12 Volt AGM batteries, in series, under or near each of the following engines:• Starboard Main: Under E/R floor plates between Pump Engine 1 and Starboard Main. Two (2) 8D batteries

in series.• Port Main: Under E/R floor plates outboard of Port Main Engine near Lufkin Gearbox. Two (2) 8D batteries

in series.• Pump Engine #3 (C-12): Under E/R floor plates outboard of Starboard Genset. Two (2) 4D batteries in

series.• Starboard Genset: Under E/R floor plates outboard of Starboard Genset. Two (2) 31 series batteries in

series.• Port Genset: Under E/R floor plates, and under Port Genset. Two (2) 31 series batteries in series.

At this time, these starting batteries are configured to be re-charged from their respective engine’s alternator only, but we are working on getting independent chargers installed…

Note: These batteries are also difficult to access, another good reason for sick leave.

D/C Power SystemsEngine (Prime Mover) Starting Batteries

All Engine Starters are 24 VDC


Starboard Main Engine Starting Battery1 of 2, in line with each other.


Port Main Engine Starting Batteries


Starboard Genset Starting Batteries

Pump Engine #3 (C-12) Starting Battery (1 of 2)

D/C Power Systems

Port Genset Starting Batteries

Engine (Prime Mover) Starting Batteries

d/c power systems general locations. there are two types of d/c power sources on the new fireboat:...

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