Page 213 - Rules of Navigation2020

D- Vessel mooring voluntarily for fog or sand storm:

During the mooring maneuver, the vessel sounds every 2 minutes a series of 6 short blasts.
(1)
Once made fast {Signal No. 16 “G.V.” hoisted}, the vessel must ring rapidly the bell for
5 seconds at intervals not exceeding one minute. For vessels of 100 meters and over, they
will have to ring the bell forward and in addition a gong aft, at intervals not exceeding one
minute

(a gong or any other instrument whose tone and sound will be different to that of the bell
forward).

These signals are stopped when the vessel is told that all vessels concerned have been
notified of her mooring.

E- Vessel aground or getting across:
See Art. 91 B - Obstruction in channel.

F– Signals between vessels and tugs:
(1) Vessel aground in the Canal:
Between a vessel aground in the Canal and a tug.

These signals are for maneuver of re-floating, as long as the vessel has one of the
grounding signals:

Pull slowly — ‧
Increase — ‧ ‧

Stop — —
Slack the line — — ‧

I am going to let go — — ‧ ‧
These signals are to be repeated by the tug.
(2) Vessel towed in the Canal:

Between a vessel towed in the Canal and a tug.
Radiotelephony is used as communication between ship and tug, besides the following

signals:
By Day ( flag ) At Night ( sound )
Slow speed : "A" hoisted above bridge — ‧

Half speed : "A" hoisted half way — ‧ ‧
Normal tow : "A" hoisted right up — ‧ ‧ ‧

Steady : "A" lowered — —
( or sound signals if considered surer )

1 ) See (p.169)

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