3946 - Grenville Channel Nautical Chart

The Inside Passage Trench: 3946 - Grenville Channel

Navigate the most iconic and confined corridor of the British Columbia North Coast with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3946 is the essential 1:40,000 scale navigational guide for Grenville Channel, providing the high-resolution data required to safely move through this narrow, steep-walled passage that separates Pitt Island from the mainland.

Precision for Technical Piloting and Remote Anchorages

Grenville Channel is famous for its "arrow-straight" topography and significant tidal currents. CHS Chart 3946 provides the "ground-truth" data required for safe pilotage in this high-traffic but tight waterway:

• The Grenville Transit: Features high-resolution mapping for the entire length of the channel, ensuring safe passage for BC Ferries, cruise ships, and tugs transiting between Wright Sound and Chatham Sound.

• Lowe Inlet & Marine Parks: Detailed bathymetry for the approaches to Lowe Inlet Marine Provincial Park, a critical stop for mariners seeking the historic cannery site and world-class salmon fishing.

• Klewnuggit & Baker Inlets: Provides the resolution necessary to navigate the narrow entrances of Klewnuggit Inlet and Baker Inlet, identifying the most secure anchorages in these deep-water havens.

• Hazard & Light Identification: Explicitly marks the navigational beacons and drying rocks at the channel’s entrances (near Gibson Island and the southern reaches), vital for situational awareness in the region's frequent low-visibility conditions.

The Professional Standard for North Coast Navigation

As the primary navigational resource for vessels moving toward Prince Rupert and beyond, the reliability of Chart 3946 is paramount. Specifically designed to meet the rigorous requirements of marine navigation, this official CHS chart delivers the accuracy and detail needed to navigate the narrowest reaches of the Inside Passage with total confidence.