Nearshore Maps

Portland south to the New Hampshire border. 10nm strips with 5nm offshore reach and full harbor penetration.

Outer Casco Bay east through Penobscot Bay, Mount Desert, and Down East to the St. Croix. Wider strips reaching the offshore ledges and rocks — Matinicus, Mount Desert Rock, Petit Manan.

Portsmouth Harbor through Hampton Beach to Newburyport. Isles of Shoals approaches and Merrimack River mouth.

Cape Ann through Boston Harbor to Plymouth. Gloucester, Salem Sound, Marblehead, Boston Harbor approaches, and the South Shore.

Cape Cod Bay north shore, the Canal approaches, Buzzards Bay, New Bedford Harbor, and the Outer Cape from Provincetown to Chatham.

Nantucket Sound, Nantucket Island, Martha’s Vineyard, Vineyard Sound, and the Elizabeth Islands. Gap-fill coverage for areas missed by the original north-to-south mainland march.

Narragansett Bay (including interior bay coverage), Block Island Sound, and Long Island Sound. Point Judith through Watch Hill and across the Sound.

Montauk to Sandy Hook. South Fork, Fire Island, Jones Beach, and the Raritan Bay approaches.

Long Branch south through Cape May. Barnegat, Long Beach Island, Atlantic City, Ocean City, and Wildwood.

Delaware Bay through Ocean City MD and Assateague Island. Rehoboth Beach and the barrier island coastline.

Chincoteague through Chesapeake Bay mouth to Virginia Beach. Eastern Shore barrier islands, Cape Charles, Hampton Roads.

Full Chesapeake Bay coverage from the bay mouth at Cape Charles north to the Head of Bay near the Susquehanna River. 11 strips covering both shores and all major tributaries. CUDEM Chesapeake Bay 2019v1 tiles.