The following NOAA nautical charts show water depths, obstructions, aids to navigation, channels, shoreline, and other information for safe marine navigate. Viewable on-line, each chart contains up-to-date information and recent Notices to Mariners. These online charts are intended as a ready reference or planning tool, but are not very convenient for cell phone users, although you may zoom in very closely in high resolution. The carts below are available as free high-resolution downloads in many formats (through the catalog. Select from the options available here:

CIHMA recommends using one of NOAA's printed or digital charts to carry on your voyage. Click here to find your closest nautical chart sales agent. Two are located in Massachusetts.

Hyannis Marina 508-790-4000 x 2

Richardson’s Maptech (Edgewater Marine Ind., LLC) 508-990-9020

You could also look at these chartlets.

Catalog N/A Atlantic Coast Catalog
13009 500,000 Gulf of Maine and Georges Bank
13200 400,000 Georges Bank and Nantucket Shoals
13203 220,000 Georges Bank Western part
13204 220,000 Georges Bank Eastern part
13218 80,000 Martha's Vineyard to Block Island
13227 2,000 Fall River Harbor; State Pier
13228 20,000 Westport River and Approaches
13230 40,000 Buzzards Bay; Quicks Hole
13232 20,000 New Bedford Harbor and Approaches
13233 40,000 Martha's Vineyard; Menemsha Pond
13235 5,000 Woods Hole
13236 20,000 Cape Cod Canal and Approaches
13237 80,000 Nantucket Sound and Approaches
13238 20,000 Martha's Vineyard Eastern Part; Oak Bluffs Harbor; Vineyard Haven Harbor; Edgartown Harbor
13241 40,000 Nantucket Island
13242 10,000 Nantucket Harbor
13244 40,000 Eastern Entrance to Nantucket Sound
13246 80,000 Cape Cod Bay
13248 20,000 Chatham Harbor and Pleasant Bay
13249 20,000 Provincetown Harbor
13250 40,000 Wellfleet Harbor; Sesuit Harbor
13251 20,000 Barnstable Harbor
13253 20,000 Harbors of Plymouth, Kingston and Duxbury; Green Harbor
13260 378,838 Bay of Fundy to Cape Cod
13267 80,000 Massachusetts Bay; North River
13269 10,000 Cohasset and Scituate Harbors
13270 25,000 Boston Harbor
13272 10,000 Boston Inner Harbor
13274 80,000 Portsmouth Harbor to Boston Harbor; Merrimack River Extension
13275 25,000 Salem and Lynn Harbors; Manchester Harbor
13276 10,000 Salem, Marblehead and Beverly Harbors
13278 80,000 Portsmouth to Cape Ann; Hampton Harbor
13279 20,000 Ipswich Bay to Gloucester Harbor; Rockport Harbor
13281 10,000 Gloucester Harbor and Annisquam River
13282 20,000 Newburyport Harbor and Plum Island Sound

Cape Cod Fisherman's Alliance

Mass Environmental Police

U.S. Coast Guard
Cape Cod Office Contact Info

U.S. Army Corps of Engineers 
New England District
696 Virginia Road
Concord, MA 01742