Canadian Chart 1 Symbols, Abbreviations and Terms
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Areas, Limits - Section N
SNS a
Restricted Areas
| Ref. | IHO Symbology | Description | CHS Symbology |
| 20 |  |
Anchoring prohibited. Anchoring prohibited area within a cable area |   |
| 21.1 |  |
Fishing prohibited. Fishing prohibited area within a cable area |   |
| 21.2 | 
|
Diving Prohibited | 
|
| 22 |  |
Environmentally Sensitive Sea Areas (ESSA): Non-specific nature reserve, National parks, Marine reserves (MR) |
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Bird sanctuary | 
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|
 |
Seal sanctuary |  |
|
 |
Particularly Sensitive Sea Area (PSSA) | |
|
| Ecological Reserve |  |
||
| Note: Other animal silhouettes (e.g. seahorse, penguin, petrel) may be used appropriately. | |||
| 23.1a |  |
Explosives dumping ground |  |
| 23.1b |  |
Dumped individual mines or explosives |  |
| 23.2 |  |
Explosives dumping ground (disused) |  |
| 24 |  |
Dumping ground for chemical waste |  |
| 25 |  |
Degaussing (DG/DM) |  |
| 27 |  |
Maximum Speed | |
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