Our Maryland & Delaware Cruising Guide covers the Delaware Bay and Maryland area of the upper Chesapeake Bay, the Potomac River as far north as Washington, D.C., the Chincoteague Bay area and includes a large scale inset of Ocean City. Charts 1 through 21 are at a scale of 1:80,000. The insets are in various scales from 1:40,000 to 1:20,000. Included in your purchase of the new printed chart book, is a digital download of each of each individual chart for your phone or tablet.