
Navigate the high-walled heart of the North Coast with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3985 is the definitive 1:40,000 scale navigational guide for the Central Portion of Principe Channel, providing the high-resolution data required for safe transit through this vital deep-water corridor.
The central portion of Principe Channel is characterized by its consistent depths and rugged island shorelines. CHS Chart 3985 provides the "ground-truth" data required for safe navigation in this technical environment:
The Main Channel Corridor: Features detailed mapping for the primary deep-water lead between Banks Island and Pitt Island, a route essential for vessels avoiding the heavy weather of the Hecate Strait.
Ala Passage & Anger Island: Detailed bathymetry for the waters surrounding Anger Island and the entrance to Ala Passage, providing safe leads for smaller vessels and those seeking off-channel exploration.
Petrel Channel Northern Junction: Provides the strategic data necessary to navigate the northern intersection with Petrel Channel, a complex junction for local traffic and industrial vessels.
Hazard & Anchorage Intelligence: Explicitly marks drying reefs, kelp forests, and the few secure, all-weather anchorages found within the bays of the Tsimpsean Peninsula's outer islands.
As the primary navigational resource for tugs, commercial fishers, and long-range cruisers moving between Wright Sound and Chatham Sound, the reliability of Chart 3985 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 central Principe reach with total confidence.
| Feature | Details |
| Chart Number | 3985 |
| Region | Pacific Coast (North Coast BC / Principe Channel) |
| Scale | 1:40,000 |
| Dimensions | Approx. 36" x 45" (Standard Paper Size) |
| Publisher | Canadian Hydrographic Service (CHS) |
| Key Coverage | Principe Channel (Central), Anger Island, Ala Passage, Pitt Island |
| Compliance | Meets official carriage requirements for safe marine navigation |