
Navigate the pivotal junction of the North Coast with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3983 is the definitive 1:40,000 scale navigational guide, providing the high-resolution "ground-truth" data required to safely transition from the open sea of Caamaño Sound into the protected deep-water corridor of Principe Channel.
This region is a critical decision point for mariners deciding between the open Hecate Strait or the sheltered "Inside" route. CHS Chart 3983 provides the specific intelligence needed for safe passage:
Nepean Sound & The Principe Entrance: Features detailed bathymetry for Nepean Sound, the primary gateway for vessels entering the southern end of Principe Channel.
Northern Estevan Group: High-resolution mapping for the northernmost islands of the Estevan Group, identifying safe leads through these rocky and complex waters.
Otter Passage & Laredo Channel North: Provides the strategic data required to navigate the technical junction where Laredo Channel meets the sound, including the high-current environment of Otter Passage.
Hazard & Light Identification: Explicitly marks the offshore reefs, drying rocks, and essential navigational aids required for situational awareness when making landfalls from the Hecate Strait.
| Feature | Details |
| Chart Number | 3983 |
| Region | Pacific Coast (North Coast BC / Caamaño Sound) |
| Scale | 1:40,000 |
| Dimensions | Approx. 36" x 45" (Standard Paper Size) |
| Publisher | Canadian Hydrographic Service (CHS) |
| Key Coverage | Caamaño Sound, Principe Channel (South), Nepean Sound, Estevan Group |
| Compliance | Meets official carriage requirements for safe marine navigation |