20 |
|
Signal station in general |
|
21 |
|
Signal station showing International Port Traffic Signals |
|
22 |
|
Traffic signal station, Port entry and departure signals |
|
23 |
|
Port control signal station |
|
24 |
|
Lock signal station |
|
25.1 |
|
Bridge passage signal station |
|
27 |
|
Telegraph station |
|
28 |
|
Storm signal station |
|
29 |
|
Weather signal station, Wind signal station |
|
30 |
|
Ice signal station |
|
31 |
|
Time signal station |
|
32.1 |
|
Tide scale |
|
32.2 |
|
Automatically recording tide gauge |
|
33 |
|
Tidal signal station |
|
34 |
|
Tidal stream signal station |
|
35 |
|
Danger signal station |
|
36 |
|
Firing practice signal station |
|