Home > Products > Cartography > Offshore G-Chart > Great Lakes - Medium / Small Charts Offshore G-Chart® - Great Lakes - Medium / Small Charts Garmin® Offshore G-Charts in the Great Lakes - Medium / Small Charts Region: Standard G-Charts work with: GPSMAP® 130, 135, 175, 210, 215, 215, 220, 225, 230, and 235. Micro G-Charts work with: GPSMAP 180 and 185. For charter/lease or trade-in orders, please call Garmin Cartography Sales at 1-800-800-1020. G-Chart Micro G-Chart Name Description Datum Retail Price GCA067SS MGCA067SS Lake of the Woods S/W Lake of the Woods southwest, Northwest Angle to Rainy River WGS 84 $99 GCA068SS MGCA068SS Lake of the Woods S/E Lake of the Woods southeast, Bigsby Island to Sioux Narrows WGS 84 $99 GCA069SM MGCA069SM Lake of the Woods North Lake of the Woods north, Throat Rapids to Whitefish Narrows, east to Clearwater Bay WGS 84 $199 GCA071SS MGCA071SS Lake Superior North Thunder Bay to Heron Bay WGS 84 $99 GUS267SS MGUS267SS Duluth & Superior Grand Marais south to Duluth, west to Ontonagon WGS 84 $99 GUS268SS MGUS268SS Lake Superior South Keweenaw Peninsula to Munising WGS 84 $99 GUS269SS MGUS269SS Lake Superior S/E Munising west to Sault Ste. Marie, north to Michipicoten Island WGS 84 $99 GUS274SS MGUS274SS Straits of Mackinac Hessel to Traverse City WGS 84 $99 GUS275SS MGUS275SS Green Bay Detroit Harbor to Oshkosh WGS 84 $99 GUS276SS MGUS276SS Mid Lake Michigan Algoma to Holland WGS 84 $99 GUS277SS MGUS277SS Lake Michigan South Port Washington to White Lake WGS 84 $99 GUS289SS MGUS289SS Lake Ontario West Buffalo to Rochester, includes Toronto to Belleville WGS 84 $99 GUS360SS MGUS360SS Thousand I & Approaches Ogdensburg to Sackets Harbor WGS 84 $99 GUS361SS MGUS361SS Lake Ontario N/E Trent River to Sodus Bay WGS 84 $99 GUS363SS MGUS363SS Finger Lakes Seneca & Cayuga Lakes WGS 84 $99 GUS593SM MGUS593SM Lake Huron, Aug. 00 Hammond Bay, Roger City east to Great Duck Island, east through Main Channel into Georgian Bay and south to Detroit including Lake St. Clair WGS 84 $199 GUS595SM MGUS595SM North Channel, Aug. 00 St. Mary's River / Sugar Island to West Bay including western Lake Manitou and west to Martin Reef WGS 84 $199 GUS596SM MGUS596SM L. Simcoe - Trent Severn, Aug. 00 Western Island Light, Twelve Mile Bay, Lake Simcoe, Trent Severn to Bay of Quinte to Cobourg WGS 84 $199 GUS597SM MGUS597SM South Georgian Bay, Aug. 00 South Baymouth and Owen Channel / Main Channel to Parry Sound including Parry Sound Harbour and south to Collingwood WGS 84 $199 GUS598SM MGUS598SM North Georgian Bay, Aug. 00 Little Current and the entrance to North Channel, southeast to Shawanaga Inlet and Point au Baril WGS 84 $199 GUS599SM MGUS599SM Lake Erie West, Aug. 00 Port Huron south to Toledo and east to Huron/Vermillion including Pelee Passage, South Passage, Put-in-Bay, Detroit River and Lake St. Clair WGS 84 $199 GUS600SM MGUS600SM Lake Erie East, Aug. 00 Buffalo to Cleveland / Rondeau Harbour including Hamilton, Youngstown, Welland Canal and Niagara River WGS 84 $199