20 |
![](/images/publications/chart1-carte1/t-servic/t20-iho.svg) |
Signal station in general |
![](/images/publications/chart1-carte1/t-servic/t20-chs.svg) |
21 |
![](/images/publications/chart1-carte1/t-servic/t21-iho.svg) |
Signal station showing International Port Traffic Signals |
|
22 |
![](/images/publications/chart1-carte1/t-servic/t22-iho.svg) |
Traffic signal station, Port entry and departure signals |
|
23 |
![](/images/publications/chart1-carte1/t-servic/t23-iho.svg) |
Port control signal station |
|
24 |
![](/images/publications/chart1-carte1/t-servic/t24-iho.svg) |
Lock signal station |
![](/images/publications/chart1-carte1/t-servic/t24-chs.svg) |
25.1 |
![](/images/publications/chart1-carte1/t-servic/t25-iho.svg) |
Bridge passage signal station |
|
27 |
![](/images/publications/chart1-carte1/t-servic/t27-iho.svg) |
Telegraph station |
![](/images/publications/chart1-carte1/t-servic/t27-chs.svg) |
28 |
![](/images/publications/chart1-carte1/t-servic/t28-iho.svg) |
Storm signal station |
|
29 |
![](/images/publications/chart1-carte1/t-servic/t29-iho.svg) |
Weather signal station, Wind signal station |
|
30 |
![](/images/publications/chart1-carte1/t-servic/t30-iho.svg) |
Ice signal station |
|
31 |
![](/images/publications/chart1-carte1/t-servic/t31-iho.svg) |
Time signal station |
|
32.1 |
![](/images/publications/chart1-carte1/t-servic/t32_1-iho.svg) |
Tide scale |
![](/images/publications/chart1-carte1/t-servic/t32_1-chs.svg) |
32.2 |
![](/images/publications/chart1-carte1/t-servic/t32_2-iho.svg) |
Automatically recording tide gauge |
![](/images/publications/chart1-carte1/t-servic/t32_2-chs.svg) |
33 |
![](/images/publications/chart1-carte1/t-servic/t33-iho.svg) |
Tidal signal station |
|
34 |
![](/images/publications/chart1-carte1/t-servic/t34-iho.svg) |
Tidal stream signal station |
|
35 |
![](/images/publications/chart1-carte1/t-servic/t35-iho.svg) |
Danger signal station |
|
36 |
![](/images/publications/chart1-carte1/t-servic/t36-iho.svg) |
Firing practice signal station |
|