THE INTERNATIONAL CODE OF SIGNALS 64:7
To obtain a repetition of a part of a message.
The repeat sign is used in conjunction with the signs A A, A B, W A
or W B, and an identifying word or group, the last two being separated
by the space sign thus:—
"TFb 12 Tl VESSEL/' — signifies: "Repeat all after ike
__________ word VESSEL."
"UD AB II JEM ," — signifies: "Repeat all before the
__________ group JEM."
"UD WA II KIO ," — signifies: "Repeat the group after
___________ KIC."
"UD WB II FLAGS ," — signifies: "Repeat the word before
FLAGS."
If a message is not understood, or tf a coded message, when decoded, is
not intelligible, the repeat sign is NOT used. The receiving ship must
then make the appropriate signal from the Signal Code.
,r Ending Sign.
The ending sign AR (• — » — •) is used in all cases to end a message.
International Code Group Indicator "P R B.M
In messages transmitted by means of the Morse Code, the Inter-
national Code group indicator "P R B'9 is to be used as the"first group of
the coded text to indicate that the message which follows consists of
Code groups from the International Code of Signals and not plain
language.
SIGNALLING BY FLASHING
Component Parts of a Message
A message made by flashing is divided into the following components,
although all of these components are not necessarily signalled in every
message:—
1. Call. 2. Identity. 3. Break sign. 4. Text. 5. Ending.
How to Signal.
Component 1.—The Call.—The transmitting ship will commence
signalling by mating the call, which will be flashed continuously until
answered.