MUS015R Covers:
Lake Superior and northern Lake Huron are covered in detail for the U.S. portion from Duluth through Alpena, including Crooked Lake, Burt Lake, and Mullett Lake in Michigan; and for the Canadian portion from Thunder Bay to Tobermory, Ont.
MapSource BlueChart serves up the best offshore cartography around and works in seamless integration with a wide range of Garmin products
Features Include:

• Chart-specific information, including chart name and number, scale, revision date, latest Notice to Mariners date
• Object-oriented cartography
• Faithful representation of published official paper charts
• Shaded depth contours
• Intertidal zones
• Spot soundings
• Navaids with view range and coverage
• Port plans
• Tides, wrecks, restricted areas and anchorages
• Trip and waypoint management functions

Compatible Units:

• GPSMAP 172c
• GPSMAP 172
• GPSMAP 178
• GPSMAP 178C
• GPSMAP 276C
• GPSMAP 3006C
• GPSMAP 376C