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GX6500E/GX6000E
7.11.3 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.
TOWING
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.