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GX2200E
7.10.3 Fog Signal Timing Chart
TYPE
PATTERN
USAGE
UNDERWAY
One 5-second blasts every 120 seconds.
5s
5s
120s
Listen Back
Motor vessel underway and
making way.
STOP
Two 5-second blasts (separated by 2 seconds)
every 120 seconds.
5s
5s
5s
5s
2s
2s
120s
Listen Back
Motor vessel underway but
stopped (not making way).
SAIL
One 5-second blasts followed by two 1-second
blasts (separated by 2 seconds) every 120
seconds.
1s
1s
1s
1s
5s
5s
2s
2s
2s
2s
120s
Listen Back
Sailing vessel underway,
fishing vessel (underway or
anchored), vessel not under
command, a vessel restricted
in her ability to maneuver
(underway or at anchor), or
a vessel towing or pushing
another ahead.
TOW
One 5-second blasts followed by three
1-second blasts (separated by 2 seconds)
every 120 seconds.
1s
1s
1s
1s
1s
1s
5s
5s
2s
2s
2s
2s
2s
2s
120s
Listen Back
Vessel under tow (manned).
AGROUND
One 11-second rings every 60 seconds.
1s
1s
1s
11s
1s
1s
1s
5s
250ms
60s
Listen Back
Vessel is aground.
ANCHOR
One 5-second rings every 60 seconds.
5.25s
5s
250ms
60s
Listen Back
Vessel is at anchor.