Complete charts for mariner's cruising New England waters from Mystic, Connecticut to Portsmouth, New Hampshire including Narragansett Bay, Buzzards Bay, Martha's Vineyard, Nantucket and the Cape . all in one convenient atlas. (On cover).On a chart, extend a line through the two; the observers position is at some point along the line. Find a second range, say at 90Ad from the first range, and cross the lines to determine position. There is no connection between dead reckoninganbsp;...