What Ted said. Fresh water, brackish water, salt water, 4,500 square miles of water, 11,700 miles of shoreline, 200 miles long, Baltimore, Annapolis, Washington, Norfolk, Knapps Narrows, Cambridge (the Hyatt!), Oxford, the Eastern Shore (Wye River estates!), backwaters, big water, lighthouses, sand bars, Red Eyes, Jellyfish Joel's, Vera's, Pussers, Poker Runs, raftups, cruising clubs, crab houses, sailbotes, turbine boats, hydros, yachts, go-fasts, dinghies, aircraft carriers, Liberty ships, Tall ships, you name it.
Pack your bags for a multi-year trip.