1340
Any of the above craft, when proceeding inwards and using the gap at the eastern end of the Boom, are prohibited from proceeding North of a line drawn across the entrance to the Tathong Channel from Cape D'Aguilar towards the South Nine Pin Island in a direction 060° if the Signals are hoisted by the Port War Signal Station at Cape D'Aguilar.
These Signals consist of 3 RED BALLS by day and 3 RED LIGHTS by night and will be repeated by Patrol Craft when in the vicinity, but mariners are warned that Patrol Craft may not always be on duty.
When the Gate Open Signals at the Boom are hoisted on the gate vessels and the Signals have been lowered at Cape D'Aguilar, passage through the Tathong Channel is safe.
Great caution is necessary when approaching the port in thick weather, and unless mariners can clearly see that these Signals are not hoisted at the Port War Signal Station at Cape D'Aguilar, they should assume that the Port is closed and keep well clear of the Tathong Channel.
Passage through the eastern gap at the Boom is only allowed when the following Signals are hoisted by the two gate vessels on the Boom, which are as follows :—
By Day.
On one Gate Vessel
On the other Gate Vessel
On one Gate Vessel
On the other Gate Vessel
By Night.
or
Two Black Balls vertical.
Two Black Cones vertical.
One Black Ball.
One Black Cone.
On one Gate Vessel
On the other Gate Vessel
On one Gate Vessel
On the other Gate Vessel
or
Two Red Lights vertical.
Two Green Lights vertical.
One Red Light.
One Green Light.
Naval vessels will be stationed near the gap at the eastern end of the Boom and to seaward of Cape D'Aguilar to assist in controlling traffic. Any orders given by these vessels must be obeyed.
All craft are forbidden to anchor in any part of the Tathong Channel within an area bounded on the North by the Anti-Submarine Boom and on the South by a line drawn from Cape D'Aguilar towards the South Nine Pin Island in a direction 060o.
This cancels Notice to Mariners No. 230 of the 20th November, 1939.
Authority-Naval Authorities.
HONG KONG, 21st November, 1939.
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