Hull Gut is a narrow channel of water, about half a mile wide and thirty-five feet deep, in Boston Harbor

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 northeast.-History:...

 running between Hull

Hull, Massachusetts

Hull is a peninsula town in Plymouth County, Massachusetts, United States. The population was 10,293 at the 2010 census. Hull is the smallest town by land area in Plymouth County and the fourth smallest in the state...

 and Peddocks Island

Peddocks Island

Peddocks Island is one of the largest islands in Boston Harbor. Since 1996 it has formed part of the Boston Harbor Islands National Recreation Area. The island is located at 42° 17' 32.6" North longitude and 70° 56' 21.6" West latitude. The area of the island is . The island is managed by the...

. It is the southern entrance to the Inner Harbor connecting it to Hingham Bay

Hingham Bay

Hingham Bay is the easternmost of the three small bays of outer Boston Harbor, part of Massachusetts Bay and forming the western shoreline of the town of Hull and the northern shoreline of Hingham in the United States state of Massachusetts. It lies east of Quincy Bay and is met at the southwest by...

. The gut is a dangerous waterway with strong cross-currents and often heavy traffic. The channel is used by oil tankers and other freighters bound for industries around the Weymouth Fore River

Weymouth Fore River

Weymouth Fore River is a small bay or estuary in eastern Massachusetts and is part of the Massachusetts Bay watershed.The headwater of Weymouth Fore River is formed by the confluence of the Monatiquot River and Smelt Brook in the Weymouth Landing area of Braintree...

 in Braintree

Braintree, Massachusetts

The Town of Braintree is a suburban city in Norfolk County, Massachusetts, United States. Although officially known as a town, Braintree adopted a municipal charter, effective 2008, with a mayor-council form of government and is considered a city under Massachusetts law. The population was 35,744...

, Weymouth

Weymouth, Massachusetts

The Town of Weymouth is a city in Norfolk County, Massachusetts, United States. As of the 2010 census, Weymouth had a total population of 53,743. Despite its city status, it is formally known as the Town of Weymouth...

, and Quincy

Quincy, Massachusetts

Quincy is a city in Norfolk County, Massachusetts, United States. Its nicknames are "City of Presidents", "City of Legends", and "Birthplace of the American Dream". As a major part of Metropolitan Boston, Quincy is a member of Boston's Inner Core Committee for the Metropolitan Area Planning Council...

.

In 1909 Rosie Pitenhof, a fourteen-year-old girl from Dorchester, was the first known person to successfully swim across the gut, from Peddocks Island to the shore at Pemberton in Hull, and back again at flood tide. Miss Pitenhof was in the water twenty-two minutes; nine minutes crossing and thirteen minutes returning.