3854 - Tasu Sound to Port Louis Nautical Chart

The Pacific Frontier: 3854 - Tasu Sound to Port Louis

Navigate the rugged, high-energy western coastline of Haida Gwaii with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3854 is the definitive 1:150,000 scale "road map" for mariners, providing the critical wide-area coverage required for safe passage along the Pacific shores of Moresby Island and Graham Island, from the industrial history of Tasu Sound to the remote wilderness of Port Louis.

Precision for Exposed Coastal Transit

The west coast of Haida Gwaii is known for its dramatic bathymetry, where the continental shelf drops rapidly into the Pacific deep. CHS Chart 3854 provides the "ground-truth" data required for safe offshore pilotage and inlet approach:

• Strategic West Coast Coverage: Features a continuous view of the coastline, including major landfalls such as Rennell Sound, Kano Inlet, and Shields Bay, identifying safe routes through high-swell environments.

• Deep-Water Fjord Access: Detailed bathymetry for the entrances to northern Moresby and southern Graham Island inlets, essential for vessels seeking refuge or exploring the "Gilded Coast."

• Hazard & Shoal Warning: Explicitly marks significant offshore dangers, drying rocks, and the nature of the sea bottom (rock, sand, or mud) across this geologically active and weather-sensitive region.

• Essential Navigational Aids: Provides precise locations for coastal lights and elevations, vital for situational awareness when transiting the foggy and cloud-prone Pacific horizon.

The Professional Standard for West Coast Safety

As the primary navigational link for vessels transiting the outside of the archipelago, the reliability of Chart 3854 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 Haida Gwaii frontier with total confidence.