page_title: Boston Harbor
section_title: Geography
hierarchical_section_title: Boston Harbor / Geography
caption_attribution_description: Petty Officer 3rd Class Tanner King, a crewmember of Coast Guard Station Boston, is underway aboard a 45-foot response boat during a security escort in Boston Harbor, Thursday, July 21, 2016. The station’s crew escorted the Norwegian-flagged LNG tanker BW GDF SUEZ Boston into a terminal in Boston. U.S. Coast Guard photo by Petty Officer 2nd Class Cynthia Oldham
context_page_description: 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.
context_section_description: Boston Harbor is a large harbor which constitutes the western extremity of Massachusetts Bay. The harbor is sheltered from Massachusetts Bay and the open Atlantic Ocean by a combination of the Winthrop Peninsula and Deer Island to the north, the hooked Nantasket Peninsula and Point Allerton to the south, and the harbor islands in the middle. The harbor is often described as being split into an inner harbor and an outer harbor. The harbor itself comprises 50 square miles (130 km²) with 180 miles (290 km) of shoreline and 34 harbor islands.
caption: Coast Guard escorts an LNG tanker in Boston Harbor, 2016
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