LakeMaster Chart Woods/Rainy MicroSD/SD. The LakeMaster Woods/Rainy Humminbird compatible Version 4 map card now brings the ground-breaking technology of Follow the Contour to your fingertips. The SD map card, when combined with a compatible i-Pilot Link system, allows you to choose a path directly on or offset from any contour and automatically navigate it letting you focus on fishing more than ever before. The Version 4 card has High Definition accuracy and detail, combined with exclusive features for Humminbird GPS units, giving anglers updated surveyed areas around Big Island on the SE portion of the lake. With named structure, detailed roads, island labels, colored buoys, marked rocks and hazards and of course High Definition contours, Version 4 is the ultimate mapping card for any angler traveling to the border. What's Covered . High definition 1' Contours for nearly all of Lake of the Woods. The detail covers all U.S and Canadian water from Big Narrows through Big Trave The LakeMaster Woods/Rainy Humminbird compatible Version 4 map card now brings the ground-breaking t With named structure, detailed roads, island labels, colored buoys, marked rocks and hazards and of High definition 1' Contours for nearly all of Lake of the Woods. The detail covers all U.S and Canad Blueberry Inlet, Deadbroke Channel, Long Bay, Sunset Channel, Black Sturgeon Bay Yellow Girl Bay. Plus i-Pilot Link compatible