495
Masters of steamers are requested to co-operate in this matter by reporting the ice conditions met with to the Harbour Masters at Tientsin, Chinwangtao, and Chefoo immediately on arriving at one of these ports. Such reports will be posted.
To facilitate the making of these reports a special book of forms will be supplied on application to any of the Harbour Offices mentioned.
Masters of Steamers are further requested to co-operate by making it a routine practice to signal to passing steamers the ice conditions experienced. The following special signals should be used for the purpose:-
Ice Signals.
The nature of the numbered signals is given in Part III.
Part I.-Signals concerning Taku and the Gulf.
95
2.
Ice conditions favourable.
Signal No. 1.
No ice.
1
3.
""
22
""
4.
""
""
17
>"
No ice.
7.
"
23
8.
**
"
"
9.
"}
10.
>>
ود
Signal No. 6.
difficult.
very difficult. impracticable.
Ice conditions favourable.
At Taku Bar.
difficult. very difficult. impracticable.)
In the Gulf.
Part II.-Signals concerning Chinwangtao.
The following signals are to be made in conjunction with a square flag or a red light at one of the mastheads:
Ice conditions favourable.
Signal No. 1.
No ice. 2.
27
,、
3.
"
"
4.
""
5.
"
""
Signal No. 6.
No ice.
difficult. very difficult. impracticable.
Ice conditions favourable.
At Chinwangtao.
7.
8.
"
""
"
9. 10.
97
A
11
19
15
19
difficult. very difficult. impracticable.
Off Chinwangtao.
Part III.-Nature of Signals.
The signal numbers correspond to certain "dots" and "dashes
as shown hero-
under. These dots" and dashes can be signalled by one or the other of the following means :---
(a.) By short and long blasts on the steamer's whistle or siren.
(b.) By short and long flashes by a single lamp.
(e.) By a hoist of flags in which "dots" are represented by any square flag and
66
dashes" by any pennant.
Signal No. 1.
2.
3.
Signal No. 6
7
>>
39
4.
"}
>>
5.
27
""
9
21
"
10
,,
These signals, if made by blasts or by flashes, should be repeated several times while the vessels are passing.
Approved:
F. W. MAZE,
Commissioner of Customs.
CUSTOM HOUSE,
TIENTSIN, 7th November, 1917.
ROBERT DOUGLAS,
Harbour Master.