Basic Operational Communication Doctrine,
NWP 4, forms the basic communication plan for the
Naval Telecommunication Procedures Fleet
Communication, NTP 4, supports and amplifies NWP
4. It contains substantially the same procedures and
instructions issued in the JANAP (joint Army, Navy,
Air Force publication) and ACP (allied communica-
tions publication) series. In the case of conflict
between NTP 4 and the JANAP/ACP series, NTP 4
will govern for intraU.S. Navy use.
NTP 4 furnishes the instructions for the
employment of all phases of naval communication on
both the command and operator levels. Additional
instructions for joint operations are contained in
JANAPs, while the ACPs contain instructions for the
proper use of communication in joint, allied, and
Although there are many JANAP/ACP
publications, the publications that contain the final
word about communication procedures are the
JANAP/ACP 121 through 134 series. They are known
as the communications instructions group.
Specifically, ACP 129, Communication Instruc-
tions, Visual Communication Procedures; ACP 121,
Communication Instruction, General Procedures; and
ACP 125, Communication Instructions, Radiotele-
phone Procedure, should be thoroughly understood by
signal bridge personnel.
The Allied Maritime Tactical Signal Book, ATP 1,
volume II, is a NATO restricted publication supplied
to naval vessels. It contains maneuvering signals,
standard operational signals, and the more common
administrative signals. A thorough knowledge of the
instructions in chapter 1 is a must for all Signalmen.
NTP 13, Flags, Pennants, and Customs, is an
excellent source of information on all matters
concerning flags and pennants.
The International Code of Signals, Pub 102,
contains signals for use with merchant vessels of all
nationalities. A knowledge of the instructions in the
front of this pub is also a must for all Signalmen. Pub
102 also contains the Incidents On and Over the High
Seas (INCSEA) agreement. This agreement between
the U.S. and former Soviet countries helps to avoid the
risk of collision at sea
ACP 131, Communication Instructions, Operating
Signals, and ACP 168, Pyrotechnic Signals, also
contain valuable information for visual
You should also familiarize yourself with the uses
and contents of the following joint call sign books:
ACP 113, Call Sign Book for Ships
ACP 100 Series, U.S./Allied Call Sign and Address
JANAP 119, Joint Voice Call Sign Book
These publications and most corrections and
changes, with the exception of Pub 102, which is
distributed by the Defense Mapping Agency
Hydrographic Center (DMAHC), are made available
to you through the technical publications librarian or
the registered publications custodian.
As a Signalman, you should be faniliar with the
system used for making corrections and changes to
Each correction or change to a publication will
have instructions for making the correction included
in it. These instructions adequately describe the
procedure to use. Read and thoroughly understand
the instructions before you make the actual entry.
Since communications are in a constant state of
flux, governing documents are subject to frequent
changes. Unless otherwise stated, these changes are to
be entered immediately, and the appropriate record
sheet annotated. If new pages have been inserted, the
publication must be thoroughly page checked.
Recommended changes to NTPs may be
submitted using a feedback report (fig. 1-6). Changes
of an urgent nature may be submitted by message.
Correspondence regarding proposed changes to
communications publications is submitted through the
normal chain of command to the cognizant authority
of the publication (found in the letter of
Never use red ink when entering corrections.
Normally, the only type of light you will use at night
on the bridge is a red light. This light would render the
red ink invisible, and you would be unable to read the