Summary -141200213

From the pilothouse chart table to the navigation

Switches and audible devices are installed adjacent

to the ends of the voice tubes as follows:

bridge wing peloruses (port and starboard)

From the chart room chart table to the navigation

Surface ships

bridge wing peloruses (port and starboard)

Push buttons are installed at the pilothouse chart

From the flag plot chart table to the flag bridge

table and chart room chart table and are connected to

energize a bell installed at each navigation bridge

wing peloruses (port and starboard)

pelorus (port and starboard).

From the pilothouse to the captain's sea cabin

Push buttons are installed at the flag plot and are

Submarines

connected to energize a bell installed at each flag bridge

pelorus (port and starboard).

From the engine room (upper level) to the engine

room (lower level)

A push button and buzzer are installed in the

pilothouse and captain's sea cabin, with each push

From the engine room (steam plant control

button connected to energize its respective buzzer.

panel) to the engine room (lower level) forward and aft

Submarines

From the auxiliary machinery room (upper

level) to the auxiliary machinery room (lower level)

A push button is installed at one end of the tube

and connected to energize a horn installed at the other

Voice tubes used for ship control functions are fitted

end of the tube.

with a megaphone-type mouthpiece at interior stations

and a hinged cover mouthpiece at weather stations. The

voice tube between the pilothouse and the captain's sea

SUMMARY

cabin is fitted with an open mouthpiece in the pilothouse

In this chapter, we have discussed how the

and a hinged cover mouthpiece in the sea cabin. Voice

sound-powered telephone system is used to provide a

tubes between machinery stations are fitted with open

reliable means of verbal communication aboard ship.

mouthpieces. Drain plugs are provided in the lowest

We have identified the various sound-powered

level of each voice tube so any water that may have

telephone circuits used with the system.

entered the voice tube can be drained from it.

We have explained how to operate and maintain the

Voice tubes are provided with a call circuit to alert

equipment used with the sound-powered telephone

personnel to man the tube. Each call circuit is designated

system. We have identified the call and signal circuits

used with the sound-powered telephone system. We also

as circuit VT and assigned the same number as its

have explained how to operate and maintain the

associated voice tube. The VT circuit operates on

associated equipment used with the call and signal

120-volt, 60-Hz, single-phase power, which is obtained

circuits.

from the nearest local lighting system supply. When

alerted by the call signal, a person at the called station

W e have discussed the operation of the

merely talks into the voice tube and is answered by a

AN/WTC-2(V) sound-powered telephone system and

person at the calling station.

the use of voice tubes aboard ship.

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