Page:Popular Science Monthly Volume 92.djvu/46

 speaking Tubes for a Ship's Gunners

Reporting the range, the hits and the misses Photos by Naval Constructor Elliot Snow, U. S. A.

��IN a naval battle, the range is obtained principally by men stationed in the mast tops. The readings of their in- struments are telephoned down to the officers in the plotting room, below the warship's deck. Here the instrument readings are quickly transcribed into terms of gun ranges and of angles of horizontal deflection. These calculations

A receiving and transmitting headset as well as a speaking tube is shown at right

��©B,

��L". S. Naval Institute

���Above: A tor- pedo tube oper- ator with the voice tube outlet beside his ear

sent to the gunners through speaking tubes, although tele- phones and nu- meral indicators are often used, to make sure that the orders will be understood. For when the battle waxes hottest,

��A sight-setter's voice tube equip- ped with a meg- aphone attach- ment, at the left

��either or a likely away.

��a voice tube

telephone is

to be swept

In big bat-

��tles, the gun that has but one channel of communication .stands grave chances of being cut off from the rest of the ship. Should that happen,

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