C-Map M-NA-D061-MS Great Lakes & St Lawrence Seaway Chart - microSD/SD Card

The C-Map M-NA-D061-MS provides comprehensive marine chart coverage for the Great Lakes and St. Lawrence Seaway region on a convenient microSD/SD card format. This digital chart card delivers detailed nautical information for navigation across all five Great Lakes and the connecting St. Lawrence Seaway waterway system.

Key Features:

• Complete Great Lakes and St. Lawrence Seaway coverage area
• C-Map 4D compatible software platform with advanced features
• Dual format microSD/SD card works with multiple chartplotter systems
• High-resolution bathymetric data and depth contours
• Detailed port information, marina locations, and navigation aids
• Point of interest data including anchorages and facilities

This chart card is designed for boaters navigating the interconnected waterways of Lakes Superior, Michigan, Huron, Erie, and Ontario, plus the St. Lawrence Seaway. The C-Map 4D software provides dynamic raster charts, satellite photo overlay capability, custom depth shading, and other advanced navigation features when used with compatible marine electronics.