3544 - Johnstone Strait, Race Passage & Current Passage Nautical Chart

The Current Specialist: 3544 - Johnstone Strait, Race Passage & Current Passage

Navigate the powerful currents and challenging sea states of the central Inside Passage with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3544 is the essential 1:40,000 scale "road map" for mariners, providing the high-resolution data required for safe passage through Johnstone Strait, including the technical narrows of Race Passage and Current Passage.

Precision for High-Traffic Tidal Streams

Johnstone Strait is the primary artery for commercial shipping and cruise ships, famous for its funneling winds and 6-knot tidal streams. CHS Chart 3544 provides the "ground-truth" data required for safe pilotage in this high-energy environment:

• Strategic 1:40,000 Detail: Offers the precision needed to identify safe leads through the deep but narrow channels surrounding Helmcken Island, where Race and Current Passages converge.

• Essential Passage Connectivity: Detailed mapping for the waters between Hardwicke Island and West Thurlow Island, including the entrance to Sunderland Channel.

• Wind-over-Tide Awareness: Includes critical bathymetry and shoreline configuration data, helping mariners predict and avoid the steep, hazardous standing waves often found when the northwest winds oppose the flood tide.

• Navigation & Hazard Identification: Explicitly marks submerged rocks, shoals, and the latest positioning of navigational aids, ensuring situational awareness in one of the busiest corridors on the BC coast.

The Professional Standard for Johnstone Strait Safety

As the gateway for vessels transiting between the Discovery Islands and the Broughton Archipelago, the reliability of Chart 3544 is paramount. Whether you are a professional pilot timing a transit through the narrows or a recreational cruiser seeking shelter near Helmcken Island, this official CHS chart delivers the accuracy and detail needed to navigate with total confidence.