3940 - Spiller Channel & Roscoe Inlet Nautical Chart

The Hidden Fjords: 3940 - Spiller Channel & Roscoe Inlet

Navigate the deep-water secrets and steep-walled beauty of the British Columbia Mid-Coast with the professional authority of the Canadian Hydrographic Service (CHS). Chart 3940 is a specialized 1:40,000 scale navigational tool, providing the high-resolution "ground-truth" data required to safely explore the labyrinthine waters of Spiller Channel and the winding, 30km-long Roscoe Inlet.

Precision for Fjord Navigation and Remote Safety

This region is defined by its dramatic relief, narrow tidal narrows, and absolute wilderness. CHS Chart 3940 provides the specific intelligence needed for safe pilotage:

• Roscoe Inlet Complexity: Features detailed bathymetry for the entire length of Roscoe Inlet, a narrow and deep fjord famous for its mountain scenery and technical turns.

• Troup Narrows & Technical Leads: Offers the granular resolution necessary to navigate Troup Narrows and the approaches to Return Channel, where situational awareness is critical for avoiding submerged hazards.

• Spiller Inlet & Yeo Island: Provides precision data for Spiller Inlet and the waters surrounding Yeo Island, identifying the safest channels for vessels moving through the northern reaches of the archipelago.

• Anchorages & Seafloor Intelligence: Explicitly marks drying reefs, rock pinnacles, and seafloor composition, vital for identifying secure anchorages in the deep, tide-swept basins of the Central Coast.

The Professional Standard for Remote Coast Safety

As the primary navigational resource for vessels exploring the inlets branching off Return Channel and Seaforth Channel, the reliability of Chart 3940 is paramount. Specifically designed to meet the rigorous requirements of marine navigation, this official CHS chart delivers the accuracy and detail needed to explore the BC wilderness with total confidence.