4001 Nautical Chart: Gulf of Maine to Strait of Belle Isle | Official CHS Marine Chart

Navigate the diverse and demanding waters of the Northwest Atlantic with the 4001 Gulf of Maine to Strait of Belle Isle (Détroit de Belle Isle) nautical chart. Published by the Canadian Hydrographic Service (CHS), this regional "General Chart" is a vital tool for long-range navigation, covering the vast coastal and offshore waters from the American border to the northern tip of Newfoundland.

This chart is essential for mariners planning transit through the Gulf of St. Lawrence, the Scotian Shelf, and the Grand Banks. Because this region is known for its heavy commercial traffic, significant tides, and variable visibility, the technical precision of the 4001 series is a requirement for safe passage. Key technical features include:

• Regional Navigation Scale: Rendered at a 1:2,000,000 scale, providing the ideal balance between offshore perspective and coastal proximity for multi-day voyages.

• Comprehensive Bathymetry: Detailed water depth soundings and contour lines that define the Continental Shelf, deep-sea trenches, and major fishing banks.

• Bilingual Documentation: Featuring full English and French (Détroit de Belle Isle) nomenclature in accordance with CHS national standards.

• Critical Navigational Aids: Clear identification of major lighthouses, fog signals, and offshore buoys necessary for landfall and positioning.

• Geospatial Standards: Produced using the North American Datum 1983 (NAD83), ensuring seamless integration with modern GPS, AIS, and electronic charting systems.

Whether you are a commercial shipping officer, a deep-sea fisherman, or a blue-water sailor, the official CHS 4001 chart provides the technical accuracy and spatial continuity required to navigate the Atlantic coast with total confidence.