You can control flooding by jettisoning equip-
ment, using submersible pumps, and forming a
bucket brigade (if other methods fail).
Methods Used to Control Flooding
Several readily available methods that do not
call for elaborate tools or training can be used to
plug or patch holes to control flooding. These
repairs are temporary and will not be watertight.
If the inflow of water can be reduced by as little
as 50 percent, flooding may be controllable with
The simplest method of repairing a fairly small
hole is to insert some kind of plug. Each repair
locker has a large assortment of conical, square-
ended, and wedge-shaped wooden plugs. Never
paint these plugs because unpainted wood absorbs
water and grips better than painted wood. If
possible, wrap plugs with lightweight cloth to help
them grip better. Roll up pillows and mattresses
and shove them into holes but this action should
be backed up with some type of patch or shoring.
Plate patches are commonly used types of patches.
They are made from tables; doors; deck plates;
or any relatively strong, flat material. Ordinary
galvanized buckets can be used in a variety of
ways to stop leaks; for example, you can push
them into a hole to form a metal plug and held
in place by shores.
We have mentioned just a few of the things
you can use to control flooding. When all thumb
rules and experience have been exhausted, your
task is to use your own ingenuity to find
something that works.
Holes in Hull Above the Waterline
Holes in the hull at or just above the waterline
may not appear to be very dangerous, but they
are. They destroy reserve buoyancy; and if your
ship rolls in a heavy sea or loses buoyancy, those
holes become submerged and admit water at a
very dangerous levelabove the center of gravity.
That reduces stability; and because the water
almost invariably presents a large, free surface (it
shifts with ship movement), it becomes doubly
dangerous. Therefore, plug those holes at once.
Give high priority to holes near the waterline.
Above-water holes present another hazard: they
permit light to leak out at night. This light may
disclose your position to the enemy.
Sources of Damage Control Information
Much information of utmost importance to
the effective operation of a damage control
organization exists in other publications and is,
of necessity, omitted from this chapter. These
publications are of particular interest to those in
charge of the damage control efforts and are
available for study on board each ship. In
addition to studying the publications listed in
table 7-6, key members of the damage control
organization should attend damage control schools.
These schools teach both theoretical and practical
aspects of damage control problems. The DCA
should maintain a damage control library con-
taining, as a minimum, the publications listed in
table 7-6. It should be available to all divisions.
Communications are a vital part of the
damage control system. Without proper com-
munications between the various repair parties
and DCC, the entire damage control system could
break down and cause the loss of the ship. As a
scene leader, you are responsible for ensuring that
personnel are able to follow correct procedures
for using damage control circuits. Phone talkers
must be knowledgeable about the stations with
which they communicate. Inexperienced person-
nel should not use the phones. Repair party phone
talkers and messengers should complete the
applicable section of Repair Party PQS for phone
The normal means of communications aboard
ship are as follows:
Battle telephone circuits (sound powered)
Interstation two-way systems (intercoms)
Ships loud speaker system (general an-
Ships service telephones
Voice tubes (where installed)
Sound-powered telephones are the primary
means of communications during battle or while
combating damage. The 2JZ circuit is the main