The letter N is also used for minus 13; this is
provided for a ship in zone minus 12 keeping daylight
BEARING, DIRECTION, AND DISTANCE
True bearing is signaled by three numerals. Such
a signal may be used in conjunction with any signal
group to indicate the bearing of the subject of that
Relative direction may be signaled by the PORT
flag or STARBOARD pennant. One or two numerals
may be used to indicate the number of tens of degrees
from right ahead.
Bearing and distance, unless otherwise stated, are
indicated by the numeral group for bearing, followed
by the position or unit indicated (if required) and the
numeral group for distance in miles.
SINGLE FLAGS AND PENNANTS
Some single (including basic maneuvering) flags
and pennants are in almost constant use by ships in
port as well as under way. Many are used so commonly
that all hands aboard ship soon know them. Whenever
BRAVO is seen flying, for instance, all hands should
know that flammable or explosive material is being
handled and that the smoking lamp is out.
When two or more single flags or pennants are
shown in the same hoist, they must be separated by
TACK. Single flags or pennants may be hoisted also
with groups from the signal book if separated from the
group and themselves by TACK. Signals from the
single flag and pennant tables are not to be preceded
by EMERGENCY. Individual flags following
EMERGENCY have different meanings. Example:
OSCAR, when hoisted alone, means man overboard,
which is certainly an emergency situation. However,
EMERGENCY O has an entirely different meaning.
Its meaning may be found in chapter 3 of the signal
Single flags also are used in international
signaling; do not confuse the meanings of signals
under the two procedures.
When an emergency exists, or when the tactical
situation is such that speed is the main consideration
in executing a maneuver, the originator hoists the
EMERGENCY pennant as the first flag on the hoist.
Any received signal preceded by EMERGENCY
is acted upon as soon as understood. The originator
sounds six short blasts on the ship's whistle to call
attention to the hoist and, if other than the OTC, passes
the signal to the OTC by the most expeditious means
Emergency signals made by flaghoist are repeated
by all ships. FIRST SUB and the originator's call sign
are only used with emergency alarm signals.
Emergency action signals are repeated flag for flag.
When EMERGENCY is shown with several
signal groups, it governs all groups when either
separated from them by TACK or hoisted in a superior
position on an adjacent halyard. If EMERGENCY is
required to govern only one of several groups, it
immediately precedes the group to be governed.
EMERGENCY preceding a call executes all
signals flying under a similar call sign as soon as
understood. Used without a call, EMERGENCY
executes all signals flying without a call.
FLAG HOIST PROCEDURES
LEARNING OBJECTIVES: Explain the
procedures for acknowledging, answering,
canceling, correcting, and relaying flaghoist
ANSWERING AND ACKNOWLEDGING
In transmitting a flaghoist signal, the originator
hoists the flags close up with the upper (first) flag against
the block. Addressees answer the signal by repeating the
hoist, flag for flag, at the dip. Heavy ships and unit
commanders will always repeat flag for flag. Small ships
will normally act in the same manner; but when signaling
conditions warrant, they may use ANS alone or below
the call of the originator if necessary to avoid confusion.
A flag officer or unit commander may answer a flaghoist
addressed to him/her from a ship or unit commander
junior to him/her by hoisting ANS at the dip, either alone
or below the originator's call. This action tells the
originator that an addressee has read the signal correctly.
It does not, however, mean that the addressee knows
what the message says. The signal watch supervisor
should assist in verifying the accuracy of incoming and
An addressee keeps the hoist at the dip while the
OOD and CIC compare interpretations of the signal.
When the OOD, by using the term Understood, signal
understood, or a similar phrase, orders you to