| NOS/NIMA | |
IHO | Foreign NIMA Charts |
|---|---|---|---|
 |
Dike, Levee |
 |
 |
| Seawall (on large-scale charts) |
 |
||
| Seawall (on smaller-scale charts) |
 |
 |
|
 |
Causeway |
 |
|
 |
Breakwater (in general) |
 |
|
 |
Breakwater (loose boulders, tetrapods, etc.) |
 |
|
 |
Breakwater (slope of concrete or masonry) |
 |
 |
Training wall (partly submerged at high water) |
 |
 |
Groin (always dry) |
 |
 |
 |
Groin (intertidal) | ||
 |
Groin (always under water) | ||