

They returned to San Francisco in the spring of 1850 with the coastal survey of northern California beginning on 4 April 1850 and continued up to the mouth of the Columbia River. They managed to survey the Mare Island Strait before steaming to Hawaii to obtain crewmen from Hawaiian monarch King Kamehameha III. Upon reaching San Francisco, Ewing and the other ship assigned to the survey, USS Massachusetts, were hampered from progress due to desertions of their crews to the gold fields, including a mutiny when crew members rowing into the city from Ewing threw an officer overboard in an attempt to desert. In September 1849, Lieutenant Commander William Pope McArthur was placed in command of the US survey schooner Ewing, which had been brought around Cape Horn to the West Coast by Lieutenant Washington Allon Bartlett. It was registered as a California Historical Landmark in 1960, and parts of it were declared a National Historic Landmark District in 1975. The base closed in 1996 and has gone through several redevelopment phases. West Coast submarine port as well as serving as the controlling force in San Francisco Bay Area shipbuilding efforts during World War II. MINSY made a name for itself as the premier U.S. The Napa River goes through the Mare Island Strait and separates the peninsula shipyard ( Mare Island, California) from the main portion of the city of Vallejo. It is located 25 miles (40 km) northeast of San Francisco in Vallejo, California. The Mare Island Naval Shipyard ( MINSY) was the first United States Navy base established on the Pacific Ocean.
