| NOS | NIMA | |
IHO/Foreign NIMA Charts |
|---|---|---|---|
 |
Established (mandatory) direction of traffic flow |
 |
|
 |
Recommended direction of traffic flow |
 |
|
 |
Separation line |
 |
|
 |
Separation zone |
 |
|
 |
Limit of restricted area |
 |
|
 |
Maritime limit in general |
 |
|
 |
Precautionary area |
 |
|