L
148
No. 48/1940.
BLACKOUT ON THE 5th MARCH, 1940.
Mariners, Shipowners and all others concerned are hereby informed that a compulsory blackout exercise will take place on the evening of the 5th March, 1940.
Air Raid Signals:
The commencement of the exercise will be indicated by the sounding of the Air Raid Warning Signal, namely a fluctuating blast from electric syrens extending over a period of three minutes, followed by the extinction of all lighting.
Harbour and Shipping:
From sunset up to the sounding of the air raid warning syren, lights may be kept lighted provided that effective provisions have previously been made for the extinguish- ment or screening of all lights, so that all such lights can be extinguished or screened within a period of three minutes.
On the sounding of the air raid warning syren, all lights, including Navigation Lights, must be extinguished or obscured.
At 2020 hours Navigation Lights should be relit, but all other lights must remain extinguished or obscured until the "raiders passed" signal has been sounded.
Cross Harbour Services:
Cross harbour ferry services will cease running between 1950 hours and 2020 hours but normal transport services after 2020 hours may be resumed, provided that all lights except Navigation Lights are reduced in intensity, either by extinction or obscuration, to the minimum compatible with safety.
Vessels under-way, when the air raid warning signal is sounded, should proceed to the nearest safe anchorage or make fast to a pier.
Normal lighting may be resumed on the sounding of the "raiders passed" signal indicated by a steady blast from electric syrens extending over a period of three minutes.
For the purpose of the exercise, the port will be closed between the hours of 1900 and 2100, and the above lighting restrictions imposed on shipping are subject to any instructions which may be issued by the Naval or Harbour Authorities.
t
HONG KONG, 20th February, 1940.
G. F. HOLE,
Harbour Master.
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