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Navigate the intricate and pristine coastline of the British Columbia Central Coast with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3921 is a specialized large-scale navigational tool, providing the granular detail required to safely enter and anchor in Fish Egg Inlet and Allison Harbour, two of the most vital "bolt-holes" for mariners transiting the exposed waters near Cape Caution.
The area north of Queen Charlotte Sound is characterized by narrow passages, hidden reefs, and extreme tidal influences. CHS Chart 3921 provides the "ground-truth" data required for safe pilotage:
Allison Harbour Detail: Features the high-resolution mapping necessary to navigate the narrow entrance of this legendary "Hurricane Hole," offering total protection from all quadrants.
Fish Egg Inlet Complexity: Detailed bathymetry for the labyrinth of islands and channels within Fish Egg Inlet, including the approaches via Schooner Passage and Penrose Island.
Safe Anchorage & Seafloor Intelligence: Shows precise water depths and seafloor composition (mud, sand, or rock), vital for ensuring a secure set in these deep-water wilderness basins.
Hazard & Rock Identification: Explicitly marks drying reefs, kelp forests, and submerged rocks that define this rugged coastline, ensuring situational awareness for fishing vessels and long-range cruisers.
As the primary navigational resource for vessels transiting the "Inside Passage" fringe or waiting for weather at Cape Caution, the reliability of Chart 3921 is paramount. Specifically designed to meet the rigorous requirements of marine navigation, this official CHS chart delivers the accuracy and detail needed to explore the BC Central Coast with total confidence.
| Feature | Details |
| Chart Number | 3921 |
| Region | Pacific Coast (Central Coast BC / Smith Sound) |
| Format | Comprehensive Large-Scale Plan Chart |
| Publisher | Canadian Hydrographic Service (CHS) |
| Key Coverage | Fish Egg Inlet, Allison Harbour, Penrose Island, Schooner Passage |
| Compliance | Meets official carriage requirements for safe marine navigation |