
Navigate the wild and exposed northwestern fringes of British Columbia with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3959 is the definitive 1:40,000 scale navigational guide for Hudson Bay Passage, providing the high-resolution data required to safely move through the island-studded waters separating the Dundas Islands from the mainland.
This region is characterized by high-energy Pacific swells and complex rock formations. CHS Chart 3959 provides the "ground-truth" data required for safe pilotage in this wilderness zone:
The Hudson Bay Passage Corridor: Features detailed mapping of the primary lead between Baron Island and the southern tip of the Dundas Islands, a vital route for vessels transiting the northern edge of Chatham Sound.
Dundas & Zayas Island Detail: Provides granular bathymetry for the waters surrounding Zayas Island and the southern reaches of the Dundas group, identifying the treacherous shoals and pinnacles common in this area.
Western Approaches to Prince Rupert: Offers the resolution necessary for mariners making a landfall from the Hecate Strait, ensuring safe transit through the western entrance of the Inside Passage.
Hazard & Light Identification: Explicitly marks drying reefs, kelp forests, and the essential navigational aids required for situational awareness in an area known for sudden weather shifts and heavy fog.
As the primary navigational resource for commercial fishers, tug operators, and long-range cruisers moving toward Dixon Entrance or the Alaska Border, the reliability of Chart 3959 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 outer coast with total confidence.
| Feature | Details |
| Chart Number | 3959 |
| Region | Pacific Coast (North Coast BC / Outer Approaches) |
| Scale | 1:40,000 |
| Dimensions | Approx. 36" x 45" (Standard Paper Size) |
| Publisher | Canadian Hydrographic Service (CHS) |
| Key Coverage | Hudson Bay Passage, Baron Island, Dundas Island, Zayas Island |
| Compliance | Meets official carriage requirements for safe marine navigation |