9 Deep-water route (sides)
Open sea |
 |
10 Deep-water route (ends)
Open sea |
 |
11 Deep-water route (ends)
Traffic separation scheme |
 |
| 12 Deep-water route next to deep-water route |
No boundary |
13 Deep-water routes (ends)
Precautionary areas |
 |
14 Deep-water route
Separation zone/line |

(Separation zone/line acts as boundary) |
15 Two-way route
All other areas |
 |
16 Area to be avoided
All other areas |
 |