Massachusetts Bay is a

bay A bay is a recessed, coastal body of water that directly connects to a larger main body of water, such as an ocean, a lake, or another bay. A large bay is usually called a Gulf (geography), gulf, sea, sound (geography), sound, or bight (geogra ...

on the

Gulf of Maine , image = , alt = , caption = , image_bathymetry = GulfofMaine2.jpg , alt_bathymetry = , caption_bathymetry = Major features of the Gulf of Maine , location = Northeast coast of the ...

that forms part of the central coastline of the

Commonwealth of Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...

Description

The bay extends from Cape Ann on the north to

Plymouth Harbor Plymouth Harbor is a harbor located in Plymouth, a town in the South Shore region of the U.S. state of Massachusetts. It is part of the larger Plymouth Bay. Historically, Plymouth Harbor was the site of anchorage of the ''Mayflower'' where the ...

on the south, a distance of about . Its northern and southern shores incline toward each other through the entrance to

Boston Harbor Boston Harbor is a natural harbor and estuary of Massachusetts Bay, and is located adjacent to the city of Boston, Massachusetts. It is home to the Port of Boston, a major shipping facility in the northeastern United States. History Sinc ...

, where they are about five miles apart. The depth from the base of the triangle to Boston Harbor is about . The westmost point of the bay is at the city of

Boston Boston (), officially the City of Boston, is the capital city, state capital and List of municipalities in Massachusetts, most populous city of the Commonwealth (U.S. state), Commonwealth of Massachusetts, as well as the cultural and financ ...

. The northern shore of Massachusetts Bay is rocky and irregular, but the southern shore is low, marshy, and sandy. Along the shores are a number of capes and headlands, and off the coast a number of small islands, especially in the entrance to Boston Harbor. The principal inlets are: on the north coast,

Gloucester Gloucester ( ) is a cathedral city and the county town of Gloucestershire in the South West of England. Gloucester lies on the River Severn, between the Cotswolds to the east and the Forest of Dean to the west, east of Monmouth and east of t ...

Harbor, Nahant Bay, Salem Harbor, Marblehead Harbor, and

Lynn Lynn may refer to: People and fictional characters * Lynn (given name), including a list of people and fictional characters * Lynn (surname) * The Lynns, a 1990s American country music duo consisting of twin sisters Peggy and Patsy Lynn * Lynn ( ...

Harbor, and on the west,

, Dorchester Bay, and Quincy Bay (the two latter being part of the Outer Boston Harbor), and on the south coast, Hingham Bay. Massachusetts Bay is itself part of the

Gulf of Maine , image = , alt = , caption = , image_bathymetry = GulfofMaine2.jpg , alt_bathymetry = , caption_bathymetry = Major features of the Gulf of Maine , location = Northeast coast of the ...

, which extends from

Nova Scotia Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland". Most of the population are native En ...

south to Cape Cod Bay. Cape Cod Bay is sometimes considered to be part of Massachusetts Bay. Under this interpretation, the name "Massachusetts Bay" denotes the entire rectangular area of ocean between Cape Ann and

Cape Cod Cape Cod is a peninsula extending into the Atlantic Ocean from the southeastern corner of mainland Massachusetts, in the northeastern United States. Its historic, maritime character and ample beaches attract heavy tourism during the summer mon ...

Massachusetts Bay Disposal Site

The Massachusetts Bay Disposal Site in deep water off the coast has been used for ocean dumping, to dispose of munitions, dredged material, rock and construction debris and sunken vessels. Between 1919 and 1970

chemical warfare Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons. This type of warfare is distinct from nuclear warfare, biological warfare and radiological warfare, which together make up CBRN, the military a ...

munitions were dumped, and after World War II hundreds of thousands of tons of surplus artillery and munitions, which are the majority of munitions washed up on shore. Most of them are inert unexploded ordnance but occasionally they are live. Fishermen have brought a torpedo into

Provincetown, Massachusetts Provincetown is a New England town located at the extreme tip of Cape Cod in Barnstable County, Massachusetts, in the United States. A small coastal resort town with a year-round population of 3,664 as of the 2020 United States Census, Provin ...

, a depth charge into

Gloucester, Massachusetts Gloucester () is a city in Essex County, Massachusetts, in the United States. It sits on Cape Ann and is a part of Massachusetts's North Shore. The population was 29,729 at the 2020 U.S. Census. An important center of the fishing industry and ...

and mustard munitions into New Bedford, Massachusetts.

References

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External links

* {{Authority control Bays of Massachusetts Bays of Essex County, Massachusetts Bays of Plymouth County, Massachusetts Bodies of water of Suffolk County, Massachusetts