1. D/C Power Systems General Locations

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

3. 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

4. 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

5. Wheelhouse/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

6. D/C Power Systems Wheelhouse/CIC D/C Power Service Panels 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

7. D/C Power Systems Wheelhouse/CIC D/C Power Service Panels 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

8. 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 Panels Wheelhouse, Starboard Stack Bulkhead

9. D/C Power Systems Wheelhouse/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”

10. D/C Power Systems Wheelhouse/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

11. D/C Power Systems Engine Room 24 VDC Service Panel Aft 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

12. D/C Power Systems Engine 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!

13. D/C Power Systems Engine 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 Mastervolt Chargemaster full automatic chargers Breakers are Blue Seas Systems 100 Amp output breakers

14. D/C Power Systems Firefighting 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

15. D/C Power Systems Firefighting System 24 VDC Batteries VSP Room, Port, Outboard 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!

16. D/C Power Systems Firefighting System 24 VDC Chargers and Battery Breakers VSP Room, Port, Outboard (1) Charger and Output Breaker for each battery bank: Chargers are Mastervolt Chargemaster full automatic chargers Breakers are Blue Seas Systems 100 Amp output breakers

17. Masterview Control and Monitoring Panel D/C Power Systems Charge 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.

18. D/C Power Systems Charge control and monitoring Masterview System Line Diagram

19. 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 Systems Engine (Prime Mover) Starting Batteries All Engine Starters are 24 VDC

20. D/C Power Systems Engine (Prime Mover) Starting Batteries Starboard Main Engine Starting Battery 1 of 2, in line with each other.

21. D/C Power Systems Engine (Prime Mover) Starting Batteries Port Main Engine Starting Batteries

22. D/C Power Systems Engine (Prime Mover) Starting Batteries Starboard Genset Starting Batteries Pump Engine #3 (C-12) Starting Battery (1 of 2)

23. D/C Power Systems Port Genset Starting Batteries Engine (Prime Mover) Starting Batteries