Environmental Control System

TM 55-1915-200-10

b. Officer's staterooms, and Sickbay on the

switchboard and distributes primary and secondary

officer's deck (FIGURE 1-23).

power to vital equipment. Upon loss of power from the

c. Crew's Mess and Recreation Room; Officer's

main switchboard, automatic bus transfer equipment

Mess and Lounge; and Galley on the poop deck

within the emergency switchboard isolates the

(FIGURE 1-24).

switchboard and allows power to be supplied by the

d. Crew's Quarters and Sanitary Spaces on the

emergency generator.

mezzanine deck (FIGURE 1-25).

e. Passageways throughout and Engine Control

1-10.1.5. Emergency Diesel Generator Engine. The

Room below decks.

emergency diesel generator set engine powers the

emergency generator.

This engine is completely

1-10.2.2.

Forced Air Ventilation and Heating.

independent and has its own lubrication oil and cooling

(FIGURES 1-26, 1-27, and 1-28) In addition to air

systems. The engine is electrically started. The

conditioning and heating, specified areas on the bridge

automatic bus transfer equipment automatically starts

deck, officer's deck, poop deck, and mezzanine deck

this engine upon failure of the ship's service systems.

are provided with forced air supply and exhaust ducting.

The LSV compartments provided with only forced air

1-10.1.6.

Emergency Generator.

The emergency

ventilation and heating are:

generator provides power to the emergency switchboard

a. Laundry Room, Physical Fitness Room,

within 45 seconds of a ship's service systems power

Workshops, Emergency Generator Space, and

failure. One 90 kW generator, completely independent

Weapons Lockers on the main deck.

from ship's service, is provided for emergency power.

b. Engine Room, Steering Gear Compartment, and

1-10.1.7. Shore Terminal Box. This box provides

Bow Thruster Space below deck.

connections for 300 amperes shore power service. It

c. Storage Spaces.

also has provisions for attaching a cable to shore and a

cable to another craft in tandem. The shore power

1-10.2.3. Air Conditioning System. Air Conditioning is

circuit breaker within the main switchboard is interlocked

provided by a 30ton chilled water package containing

with the ship's system generator circuit breakers to

two compressors, two condensers and one chiller

prevent both sources from supplying power to the

(FIGURE 1-29). A centrifugal pump is used to circulate

switchboard at the same time.

the chilled water through its piping system. Each

compartment having air conditioning has a cooling coil

1-10.2. Environmental Control System. This system

and fan unit to circulate the cool air. Heating strips are

provides the LSV living compartments and specified

used at the fan units to provide heating if required. All

work spaces with air conditioning and heating. Other

air conditioned compartments have thermostat controls.

work spaces and storage spaces are provided with

Compartments with air ventilation have the heating

forced air ventilation and heating.

strips built into the air supply fan and a control switch.

1-10.2.1. Air Conditioning and Heating. The LSV

compartments providing air conditioning and heating

are:

a. Pilothouse, Damage Control Central, and Radio

Room on the bridge deck (FIGURE 1-22).

1-58