3947 - Grenville Channel to Chatham Sound Nautical Chart

The Gateway to the North: 3947 - Grenville Channel to Chatham Sound

Navigate the pivotal junction of the British Columbia North Coast with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3947 is the definitive 1:40,000 scale navigational guide for the transition from the protected Inside Passage into the open reaches of Chatham Sound, providing the high-resolution data required for the technical pilotage of Arthur Passage and Malacca Passage.

Precision for Strategic Transit and River Entrances

As vessels exit the "straitjacket" of Grenville Channel, they encounter the powerful tidal influences of the Skeena River and the complex archipelago of the North Coast. CHS Chart 3947 provides the "ground-truth" data required for safe passage:

• Arthur & Malacca Passage Detail: Features high-resolution mapping for the primary deep-water leads between Kennedy Island and Porcher Island, ensuring safe passage for commercial shipping and BC Ferries.

• Skeena River Approaches: Detailed bathymetry for the southern approaches to the Skeena River, identifying the shifting sands and tidal bars critical for local fishers and coastal cruisers.

• Lawyer Islands & Anchorage Data: Provides the resolution necessary to navigate the area surrounding the Lawyer Islands and identifies secure anchorages for vessels awaiting favorable tides or pilotage into Prince Rupert.

• Hazard & Light Identification: Explicitly marks drying reefs, rock pinnacles, and the sophisticated network of navigational aids required to navigate this high-traffic maritime corridor safely.

The Professional Standard for Prince Rupert Navigation

As the primary navigational resource for vessels transiting between the central fjords and the international port of Prince Rupert, the reliability of Chart 3947 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 northern Inside Passage with total confidence.