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 TM 55-1905-223-SDC
fire, the greater part of the water fog so applied will turn to steam, thereby smothering the fire as well as
reducing heat. The firefighter should stand clear of openings since there may be a violent outward rush of hot
gases and air due to their being displaced by steam.
1. In determining the number of hose lines to be used, the firefighter should be guided by the extent
and intensity of the fire. The ship's pumping capacity is not unlimited, and every gallon of water released in
the ship reduces its stability and freeboard until pumped out. The all-purpose nozzle permits the firefighter to
use water fog for nearly all firefighting situations where water is indicated and still have a solid stream
available when needed. A solid stream from a 1-1/2 inch hose equipped with the all-purpose nozzle and with
100 psi at the fire main will discharge 250 gallons per minute (gal./min.), while high-velocity fog under the
same conditions will discharge only approximately 117 gal./min. Ultimately, every gallon of water put on a fire
must be removed to preserve ship stability.
m. It may also be impossible to approach a fire in a space in a normal manner due to heat intensity,
blocked hatch, etc. In such a case, it may become necessary to cut an access hole large enough to insert an
equipment nozzle in order to apply an extinguishing agent.
n. Send out investigators to check surrounding areas; inspection and reporting must continue until
the fire is out and danger is over.
o.
Keep phone talker as close to the scene as possible.
p.
Make continuous progress reports to the bridge. These shall include:
(1) Location of fire.
(2) Class of fire.
(3) Electrical power secured.
(4) Fire boundaries set (location).
(5) Fire under control.
(6) Fire out.
(7) Reflash watch set.
(8) First oxygen and explosive tests.
(9) Fire overhauled.
(10) Second oxygen and explosive tests.
(11) Compartment desmoked.
(12) Third oxygen, third explosive and toxic tests.
(13) Compartment safe to enter.
6-13
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