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(3) That the top light shall indicate the first of two directions. (4) That where possible, i.e., in signals 2 and 3, for the bottom light, green shall represent North, and white South. Thus, signal 2 being NW to NE the top light is white, the middle green, and the bottom green. Signal 3 being SE to SW, the top light is green the middle white and the bottom white. Signal 4 being NE to SE the two top lights are green, leaving no choice for the bottom light, which must be white. This is no disadvantage, as the signal has both north and south components, and so the bottom light can have no directional significance. Similarly for Signal 5 (NW-SW), the top lights of which must be white. This leaves no choice for the bottom light, which must be green.
The introduction of a white light is necessary in order to provide distinctive signals for the four main signals. The local day signals are displayed at the masthead of the Storin Signal mast, Kowloon, and are repeated at the Harbour Office, H.M.S. "Tamar", Green Island, the Godown Company, Kowloon, Lyemun, and Lai-Chi-Kok. The night signals are displayed on the tower of the Railway Station, Kowloon, and repeated at the Harbour Office and on H.M.S. Tamar.
The day signals, if necessary, are displayed simultaneously with the non-local signals, and both remain until an order to change or lower is received from the Observatory.
For the benefit of native craft and passing ocean vessels, a cone is exhibited at several outlying stations during the time that any of the local signals are displayed in the Harbour, to indicate that there is a depression somewhere in the China Sea, and that a typhoon warning is displayed in the Harbour.
In the following table are given the number of hours the local signals were hoisted in each of the years 1912-1917 :--
Year Red Signals. Number of hours. Black Signals. Number of hours. Bombs,* Number of times fired. 1912 151 164 1913 146 189 I 1914 146 178 1915 120 1916 70 201 I 1917 102 36* Three bombs fired at intervals of 10 seconds to indicate that winds of typhoon force are anticipated.
+
1
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(3) That the top light shall indicate the first of two directions. (4) That where possible, i.e., in signals 2 and 3, for the bottom light, green shall represent North, and white South. Thus, signal 2 being NW to NE the top light is white, the middle green, and the bottom green. Signal 3 being SE to SW, the top light is green the middle white and the bottom white. Signal 4 being NE to SE the two top lights are green, leaving no choice for the bottom light, which must be white. This is no disadvantage, as the signal has both north and south components, and so the bottom light can have no directional significance. Similarly for Signal 5 (NW-SW), the top lights of which must be white. This leaves no choice for the bottom light, which must be green.
The introduction of a white light is necessary in order to provide distinctive signals for the four main signals. The local day signals are displayed at the masthead of the Storin Signal mast, Kowloon, and are repeated at the Harbour Office, H.M.S. "Tamar", Green Island, the Godown Company, Kowloon, Lyemun, and Lai-Chi-Kok. The night signals are displayed on the tower of the Railway Station, Kowloon, and repeated at the Harbour Office and on H.M.S. Tamar,
The day signals, if necessary, are displayed simultaneously with the non-local signals, and both remain until an order to change or lower is received from the Observatory,
For the benefit of native craft and passing ocean vessels, a cone is exhibited at several outlying stations during the time that any of the local signals are displayed in the Harbour, to indicate that there is a depression somewhere in the China Sea, and that a typhoon warning is displayed in the Harbour.
In the following table are given the number of hours the local signals were hoisted in each of the years 1912-1917 :--
Red Signals.
Year.
Black Signals.
Bombs,*
Number of hours.
Number of times fired.
+
1912
151
164
1913
146
189
I
1914
146
178
1915
120
1916
70
201
I
1917
102
36
* Three bombs fired at intervals of 10 seconds in licale that winds of typhoon force are anticipated.
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