| NOS/NIMA | IHO/Foreign NIMA Charts | ||
|---|---|---|---|
 |
Symbols in plan: position is center of primary symbol |
 |
|
 |
Symbols in profile: position is at bottom of symbol |
 |
|
 |
Point symbols (accurate positions) |
 |
|
 |
Approximate position |
| |
| NOS | National Ocean Service (US) |
| NIMA | National Imagery and Mapping Agency (US) |
| IHO | International Hydrographic Organization |
|
|
||||||||||||||||||||
|
|||||||||||||||||||||
|
|
||||||||||||||||||||