
Navigate the intricate and tide-driven passage of central Haida Gwaii with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3891 is the definitive 1:40,000 scale "road map" for mariners, providing the high-resolution data required for safe passage through Skidegate Channel, the vital marine link between the east and west coasts of the archipelago.
Skidegate Channel is famous for its "Narrows," where extreme tidal flows and shallow depths demand perfect situational awareness. CHS Chart 3891 provides the "ground-truth" data required for safe pilotage:
East & West Narrows Detail: Features the granular resolution necessary to navigate the narrowest sections of the channel, vital for timing transits with high-water slack.
Inner Inlet Coverage: Detailed bathymetry for the western reaches of Skidegate Inlet, including the approaches to Trounce Inlet and the complex shoreline of southern Graham Island.
Hazard & Shoal Identification: Explicitly marks drying reefs, submerged rocks, and the shifting nature of the sea bottom (mud, sand, or rock) that can obstruct passage in this technical waterway.
Navigational Aids: Provides precise locations for beacons and daymarks that are essential for maintaining a safe lead through the winding reaches of the channel.
As the primary navigational resource for vessels seeking to avoid the long transit around Cape St. James or Rose Point, the reliability of Chart 3891 is paramount. Specifically designed to meet the rigorous requirements of marine navigation, this official CHS chart delivers the accuracy and detail needed to traverse the heart of Haida Gwaii with total confidence.
| Feature | Details |
| Chart Number | 3891 |
| Region | Pacific Coast (Central Haida Gwaii / Inter-Island) |
| Scale | 1:40,000 (High-Resolution Detail) |
| Dimensions | 28" x 45" (Standard Paper Size) |
| Publisher | Canadian Hydrographic Service (CHS) |
| Key Coverage | Skidegate Channel, East Narrows, West Narrows, Trounce Inlet |
| Compliance | Meets official carriage requirements for safe marine navigation |