| NOS | NIMA | |
IHO | Foreign NIMA Charts |
|---|---|---|---|---|
 |
 |
Production platform, Platform, Oil derrick |
 |
|
 |
Flare stack (at sea) |
 |
 |
|
 |
Mooring tower, Articulated Loading Platform (ALP). Single Anchor Leg Moorings (SALM) |
 |
|
|
 |
 |
Observation/research platform (with name) | |
|
 |
Artificial island | |||
 |
Oil or Gas installation buoy, Catenary Anchor Leg Mooring (CALM), Single Buoy Mooring (SBM) |
 |
|
|
 |
 |
Moored storage tanker | ||