Time Signals will also be given at night by means of three white lamps mounted vertically on the Observatory wireless mast. From 8 56" to 9" om O' pan. (120th Meridian Time) the lamps will be extinguished moment- arily at the even seconds, except at the 2nd, 28th, 50th, 52nd and 54th of each minute.
T. F. CLANTON, Director,
21st November, 1919.
● Extract from the Hongkong Government Gazelle. „No. 58 of
the 21st November, 1919.)
COLONIAL SECRETARY'S DEPARTMENT,
No. 270.
CHINA SEAS STORM SIGNAL CODE.
(Operative in Hongkong from the 1st June, 1920.)
General Explanation.
1. The Signals are made by means of certain Symbols, each corresponding, for certain purposes, to a number:-
1 T
1 2 3
4
6 7
8 9
2. The Signals are hoisted at the yard-arms and masthead of the Storm Signal Mast on Blackheads Hill, and have the following general characteristics :-
Typhoon and Continental Depression Signals:
ta.) 4 symbols at one yard-arm showing
the position of the centre.
(b. 3 symbols at the other yard-arm show- ing the direction of motion and or certain characteristics Iser Tables Nos. 1, 2, and 3).
(c) symbol at the masthead showing the time the warning was issued by the Royal Observatory (see Table No. 4 1.
Cale Signals:
(d.) symbol at one yard-arm showing the
region threatened (see Table No. 5). (e) 2 symbols at the other yard-arm
showing the general direction of the wind (see Table No. 1.
al symbol at the masthead showing the time the warning was issued by the Royal Observatory (see Table No. B.
The two upper symbols of group (a) indicate by their corresponding numbers the latitude, and the two lower symbols the longitude of the centre of a circle of specified size within which the centre of the typhoon or depression lies. The symbols for longitude give the units and tens only; thus, 32 indicates longitude 132,
The two upper symbols of group (b) indicate the direction in which the typhoon is travelling, (see Table No. 1) or, alternately, certain conditions of the typhoon (see Table No. 2). The third and lowest symbol of group (b) indicates the radius of the circle whose centre is shown by the latitude and longitude. This symbol may also indicate degree of intensity. In the case of a continental depression it indicates that it is such, and the corresponding latitude and longitude is the centre of an indefinite area affected (see Table No. 3).
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