1. Q u i c k - A c t i n g
Wa t e r t i g h t
Door
REVIEW QUESTIONS
(fig. 3-7)--Used for routine passage and access/egress
into superstructure from weatherdecks, main
Q6.
Each compartment has a four-part number
passageways, or manned spaces, such as Combat
separated by hyphens.
Information Center, Radio Central, Machinery Room,
or Damage Control Central. These doors are usually
1.
True
placed in high traffic areas.
2.
False
Q7.
Compartments completely to starboard are
given odd numbers.
1.
True
2.
False
Q8.
The last part of the compartment number is
the letter that identifies the
1.
primary use of the compartment
2.
size of space inside the compartment
3.
side the compartment is on
OUTSIDE VIEW
4.
deck the compartment is on
INSIDE VIEW
DCf0307
Figure 3-7. Quick-acting watertight door.
WATERTIGHT INTEGRITY
2. Individually Dogged Watertight Doors
(fig. 3-8)--Watertight doors are either 4-, 6-, 8-, 10-, or
Learning Objective: Recall different types of
12-dogged doors. They provide access/egress to
compartments that are not high usage spaces, which do
watertight closures and the inspection procedures for
not require rapid access, such as paint lockers, deck gear
the closures.
lockers, or storerooms. Ten-dog doors are usually found
The watertight integrity of a naval ship is
below the water line in order to maintain a higher degree
established when the ship is built. "Watertight
of watertight integrity.
integrity" is defined as closures or fittings that prevent
the ingress of water to certain compartments. This
original watertight integrity may be reduced or
destroyed through enemy action, storm damage,
collision, stranding, or negligence. The damage
control officer (engineer officer) is responsible for
ensuring that the ship's watertight integrity is not
impaired through negligence. Any impairment that
occurs must be corrected as soon as possible. The
ship's material condition of readiness in effect will also
increase or decrease the ship's level of watertight
integrity.
OUTSIDE VIEW
INSIDE VIEW
TYPES OF WATERTIGHT CLOSURES
DCf0308
Figure 3-8. Individually dogged watertight door.
The following list and illustrations (figs. 3-7
through 3-10) provide information on four of the many
3. R a i s e d Wa t e r t i g h t H a t c h ( fi g. 3 - 9 )--
types of watertight closures on a ship. For more
Installed in interior and exterior areas where rapid
detailed information, refer to NAVSEA Publication
S9169-AW-DCB-010.
access/egress is not required. Usually found in a low
3-7
