Maptech 22102 Full Size Chart Kit- Block Island, RI to the Canadian Border. A lot of navigation information for a fraction of the price of individual NOAA charts. This kit provides you with full color reproductions of government charts and aerial photos of choice anchorages. Includes Loran-C and GPS waypoint coordinates, best courses and mileage between areas. Region chart kit is 17 x 22. Includes companion CD.