SHIPS' BOATS.The following visual call signs
are assigned for ships' boats.
Chief of staff barge or gig
Staff gigs or motorboats
Boats under power
Boats under sail
Boats under oars
Reserved for local assignment by
commanding officers. Calls are
generated according to boat numbers.
Boat calls consist of QUEBEC hoisted above
numeral pennant(s). Together, they signify the type of
boat(s) called. Numeral flags following the call sign
indicates the individual number of the boat. Thus,
Qp54 is the call sign a ship would use for its utility
boat number 4. To call another ship's boat, the call of
the ship is hoisted below the boat call. For example,
Qp4Rp1p4 is the captain's gig of carrier 14.
Address groups are four-letter groups assigned to
represent a command, activity, or unit. Although
address groups are used mainly in the message
address, they can be used in military communications
to establish and maintain communications in the same
manner as call signs. In general, call signs and address
groups are used by the Navy in the same way.
Address groups never start with the letter N;
hence, they are easily distinguishable from naval radio
call signs, Unlike international call signs, address
groups follow no distinctive pattern. For example, you
learned the difference in call signs for naval ships and
shore stations. In address groups, however, the
arrangement of the four letters is not significant.
All commands afloat (except individual ships) are
assigned address groups. Address groups are assigned
also to shore-based commands, authorities, or
activities not served by their own communication
facilities. More specifically, these are (1) senior
commands and commanders ashore, such as the
Secretaries of Defense and of the Navy, bureaus and
offices of the Navy Department, and district
commandants; (2) fleet, type, or force commanders
ashore; (3) elements of operating forces permanently
ashore who are in frequent communication with forces
afloat; and (4) elements of the shore establishment
(such as weather centrals) having a need for direct
addressing and receipt of the messages.
Among other uses, address groups aid in the
delivery of messages when a communications center
serves so many activities that its own call sign is
insufficient to identify the addressee.
Address groups, like call signs, are divided into
types. They are individual activity, collective,
conjunctive, and geographic address groups, and
address indicating groups.
Individual Activity Address Groups
Individual activity address groups are repre-
sentative of a single command or unit, either afloat or
DTCI . . . . . . COMPHIBLANT
SSMW . . . . . CNO
Collective Address Groups
Collective address groups represent two or more
commands, authorities, activities, units, or
combinations of these. Included in the group are the
commander and subordinate commanders. Examples:
DSWN.. . . . . DESRON 16
AMGK . . . . . . SIXTH FLT Conjunctive Address Groups
Conjunctive Address Groups
You must remember that conjunctive address
groups have incomplete meanings. It is always
necessary to complete the meaning by the addition of
other address groups denoting a specific command or
location. For that reason, conjunctive address groups
are used only with one or more other address groups.
The conjunctive address group XZKW, for example,
means All ships present at
. This particular
group must be followed by a geographic address group
to complete the meaning.
Geographical Address Groups
Geographic address groups should be included as
a part of an address designator only when necessary to
complete the titles of addressees or originators, in