The Massachusetts coast
52 charted sites, from the state line to the state line, in the stretches of coast people actually name. So far lighthouses; shipwrecks, islands, shoals and reefs are coming soon. On the website before the app.
- Newburyport and Cape Ann9 sites
Plum Island and Newburyport, Ipswich Bay, and Cape Ann: Annisquam, Rockport's Thacher Island twin lights and Gloucester.
- Salem, Marblehead and Beverly5 sites
Salem Harbor and Marblehead, Bakers Island and the North Shore lights at the edge of Massachusetts Bay.
- Boston Harbor4 sites
The harbor islands, Boston Light on Little Brewster Island, and the Graves at the harbor's outer edge.
- The South Shore and Plymouth3 sites
Minot's Ledge, Scituate, Duxbury and Plymouth Bay, with Gurnet Point at its mouth.
- Provincetown and the Outer Cape6 sites
Provincetown and the tip of Cape Cod, the Cape Cod National Seashore, Truro's Highland Light and Eastham's Nauset.
- Chatham, Monomoy and the Cape's south shore7 sites
Chatham at the elbow of Cape Cod, Monomoy Island, and the harbors of Nantucket Sound from Harwich to Hyannis.
- Nantucket3 sites
Nantucket Island: Brant Point at the harbor, Great Point at the island's tip and Sankaty Head on its bluff.
- Martha's Vineyard7 sites
Edgartown, East Chop and West Chop, Cape Poge, and the clay cliffs of Gay Head (Aquinnah) at the island's west end.
- Woods Hole, Buzzards Bay and New Bedford8 sites
Woods Hole and the Elizabeth Islands, Buzzards Bay from the canal to New Bedford, and Fall River.