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- If in harbour where an NCAGS Authority is present: in these
circumstances the NCAGS Authority will send an NCAGS Liaison
Officer to collect information about your ship and its intended passage
(Format BRAVO: see below).
• This information is to enable the Naval Control of Shipping Authorities to
plot your vessel’s passage through the NCAGS and thus be in a position
to provide advice and/or direction if this should prove necessary. Such
advice would be sent either directly to your ship or via a general message
(see Para 7 below).
• Unless instructions to the contrary are received from the Naval Control of
Shipping Authority (see Para 8 below), masters are then free to continue
on their normal passage along the route they have reported and no
further action is required by them.
6. Changes to Passage Intentions
If, after the details of an intended passage through an NCAGS have been
reported, these details change, the new passage intentions are to be
reported by a Passage Amendment (PASSAM) message (see below).
7. Communications
In addition to reporting the communication station that you intend to copy
whilst on passage, you may be advised by national authority or by WWNWS
message of additional communication requirements. These may be:
• Communication Reporting Gate (CRG). In order that you may receive upto-date
information on the risk to shipping and instructions concerning
your transit of the NCAGS, you may be requested to report when you have
reached a certain point(s) during your voyage. In these circumstances,
details of the requirement will be contained in the message setting up the
CRG.
• Advisory Communication Listening Watch. In addition, or alternatively, to
the requirements of a CRG, you may be requested to listen to a nominated
Coast Earth Station (CES) or Coast Radio Station (CRS) in order to receive
messages of an immediate or general nature concerning the situation. In
these circumstances, details of the requirement will be communicated to
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