Port Townsend Bay, also called Port Townsend, is a marine inlet off Admiralty Inlet

Admiralty Inlet

Admiralty Inlet is a strait in the U.S. state of Washington connecting the eastern end of the Strait of Juan de Fuca to Puget Sound. It lies between Whidbey Island and the northeastern part of the Olympic Peninsula....

 at the northeastern extreme of the Olympic Peninsula

Olympic Peninsula

The Olympic Peninsula is the large arm of land in western Washington state of the USA, that lies across Puget Sound from Seattle. It is bounded on the west by the Pacific Ocean, the north by the Strait of Juan de Fuca, and the east by Puget Sound. Cape Alava, the westernmost point in the contiguous...

 in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Washington. It was named Port Townsend by George Vancouver

George Vancouver

Captain George Vancouver RN was an English officer of the British Royal Navy, best known for his 1791-95 expedition, which explored and charted North America's northwestern Pacific Coast regions, including the coasts of contemporary Alaska, British Columbia, Washington and Oregon...

 in 1792. The name Port Townsend Bay is sometimes used to distinguish the bay from the city of Port Townsend

Port Townsend, Washington

Port Townsend is a city in Jefferson County, Washington, United States, approximately north-northwest of Seattle . The population was 9,113 at the 2010 census an increase of 9.3% over the 2000 census. It is the county seat and only incorporated city of Jefferson County...

 on its northwestern shore. Another alternate name is Port Townsend Harbor.

The bay is home to the US Navy's

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 primary munitions shipping dock on the Pacific Coast, Naval Magazine Indian Island

Indian Island, Washington

Indian Island is an unincorporated community in Jefferson County, Washington, United States. It is located between Port Townsend Bay and Kilisut Harbor. Parts also border on Oak Bay and Scow Bay. Until the construction of the Port Townsend Ship Canal Indian Island was connected to the mainland...

. An "explosives anchorage" for use by munitions vessels is located in the bay about one mile from downtown Port Townsend City. Fort Townsend State Park

Fort Townsend State Park

Fort Townsend State Park, formerly Old Fort Townsend State Park, in Jefferson County, Washington is a marine camping park in the Washington State Parks. It consists of of wooded land with of saltwater shoreline on Port Townsend Bay. Available activities include hiking, boating, fishing,...

also lies on the bay.