Mare Island Naval Shipyard

Coordinates: 38°5′24″N 122°15′48″W / 38.09000°N 122.26333°W / 38.09000; -122.26333
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Mare Island Naval Shipyard
USS Wadleigh (DD-689) at the Mare Island Naval Shipyard, California (USA), on 10 April 1945 (NH 98906).jpg
USS Wadleigh at Mare Island Naval Yard, 10 April 1945.
Mare Island Naval Shipyard is located in California
Mare Island Naval Shipyard
Mare Island Naval Shipyard is located in the United States
Mare Island Naval Shipyard
LocationVallejo, California
Coordinates38°5′24″N 122°15′48″W / 38.09000°N 122.26333°W / 38.09000; -122.26333
NRHP reference No.75002103[1]
CHISL No.751[2]
Significant dates
Added to NRHP15 May 1975
Designated NHLD15 May 1975[3]
Designated CHISL1960

The Mare Island Naval Shipyard (MINSY) was the first United States Navy base established on the Pacific Ocean.[4] It is located 25 miles (40 km) northeast of San Francisco in Vallejo, California. 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. MINSY made a name for itself as the premier U.S. West Coast submarine port as well as serving as the controlling force in San Francisco Bay Area shipbuilding efforts during World War II.[5]

The base closed in 1996 and has gone through several redevelopment phases. It was registered as a California Historical Landmark in 1960,[2] and parts of it were declared a National Historic Landmark District in 1975.[3]


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.[6] 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.[7] They managed to survey the Mare Island Strait[6] before steaming to Hawaii to obtain crewmen from Hawaiian monarch King Kamehameha III.[8] 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. On 1 August 1850, while still in Oregon, McArthur purchased a 116 interest in Mare Island for $468.50[6] then returned to San Francisco later that month to prepare charts and write reports.

On 15 January 1852, Secretary of the Navy William A. Graham ordered a Naval Commission to select a site for a naval yard on the Pacific Coast. Commodore D. Sloat along with Commodore C. Ringgold, Simon F. Blunt and William P.S. Sanger (former overseer of construction of Drydock Number One, Norfolk Naval Shipyard) were appointed to the commission. On 13 July 1852, Sloat recommended the island[9] across the Napa River from the settlement of Vallejo.

The Navy purchased the original 956 acres (387 ha) of MINSY on 4 January 1853. McArthur's family share (he had died a few months after purchasing an interest in Mare Island) was $5,218.20.[6] The Navy commenced shipbuilding operations on 16 September 1854 under the command of then-Commander David Farragut, who later gained fame during the U.S. Civil War Battle of Mobile Bay, when he gave the order, "Damn the torpedoes, full speed ahead!" MINSY served as a major Pacific Ocean repair station during the late 19th century, handling American as well as Japanese and Russian vessels in the course of duty.

Monitor Camanche at Mare Island, 1866.

In 1861, the longest lived of the clipper ships, Syren, was brought to Mare Island Navy Yard for $15,000 of repairs. Syren had struck Mile Rock twice while trying to sail out of the Golden Gate.[10]

Marines first arrived for duty in 1862 under the command of Maj Addison Garland, who was the first officer to command the Marine barracks on the island.

Mare Island Naval Shipyard also took a commanding role in civil defense and emergency response on the West Coast, dispatching warships to the Pacific Northwest to subdue Native American unrest. MINSY sent ships such as Wyoming south to Central America and the Panama Canal to protect US political and commercial interests. Some of the support, logistics and munition requirements for the Spanish–American War were filled by Mare Island. MINSY sent men, materiel and ships to San Francisco in response to the fires following the 1906 earthquake. Arctic rescue missions were mounted as necessary. Ordnance manufacturing and storage were two further key missions at MINSY for nearly all of its active service, including ordnance used prior to the American Civil War.[11]

In 1911, the Marine Corps established two West Coast recruit training depots first at Mare Island, the second at Puget Sound, Washington. Mare Island eventually became the West Coast's only recruit training facility when the Puget Sound operation consolidated to the San Francisco Bay Area in 1912. Instructors trained recruits there until 10 August 1923, when they relocated to the Marine Corps Recruit Depot San Diego.[12] The Marine Barracks Mare Island remained.

World War I[edit]

Mare Island Naval Shipyard, in 1911.

In July 1917, MINSY was the site of a major explosion that killed six people. On July 9, a gunpowder magazine containing 127,600 pounds of black powder blew up, damaging a number of surrounding buildings, and leaving a mystery as to what had caused it. Suspicion settled on an identified German agent and possible saboteur, Lothar Witzke, but the investigation proved inconclusive and the official verdict was that the cause was unknown. Stephen C. Ruder has suggested in a 2022 article that it may not have been an act of German sabotage but suicide by a civilian, Neil Damstedt, who was the principal victim and only individual inside the magazine at the moment of explosion.[13][14]

MINSY saw major shipbuilding efforts during World War I. MINSY holds a shipbuilding speed record for a destroyer that still stands, launching USS Ward in just 17+12 days in May–June 1918.[15] Mare Island was selected by the Navy for construction of the only US West Coast-built dreadnought battleship, USS California, launched in 1919. In 1904, the pre-dreadnought battleship USS Nebraska had been launched at Seattle, Washington. Noting the power of underwater warfare shown by German U-boats in World War I, the Navy doubled their Pacific-based submarine construction program at Puget Sound Naval Shipyard by founding a submarine program at MINSY in the early 1920s.[16]

World War II[edit]

The AJC Band, from Hamilton Field, plays at a war bond rally held at Mare Island on 26 June 1945. Behind the band, caricatures of Benito Mussolini and Adolf Hitler have been crossed out and a fanged Japanese figure is labeled "Tough One To Go"

Base facilities included a hospital, ammunition depot, paint and rubber testing laboratories, and schools for firefighters, opticians, and anti-submarine attack during World War II.[17] MINSY reached peak capacity for shipbuilding, repair, overhaul, and maintenance of many different kinds of seagoing vessels including both surface combatants and submarines.

Up to 50,000 workers were employed.[18] Mare Island even received Royal Navy cruisers and destroyers and four Soviet Navy subs for service.[5] Following the War, MINSY was considered to be one of the primary stations for construction and maintenance of the Navy's Pacific fleet of submarines, having built seventeen submarines and four submarine tenders by the end of hostilities.

Before World War II the Navy established Station I at Mare Island as one of four High Frequency Direction Finding (HFDF) stations on the Pacific mainland to track Japanese naval and merchant shipping east of Hawaii. The other stations were: Point Arguello, California (Station Z), Point Saint George, California (Station T), and Fort Stevens, Oregon (Station S).

War bonds[edit]

Patriotism and esprit de corps among the workers ran very high. Mare Island's military and civilian workforce raised almost $76M in war bonds; enough to pay for every one of the submarines built at MINSY prior to VJ Day. More than 300 landing craft were built at Mare Island.[19][20]

Dry docks and slipways[edit]

Dock No. Material of which dock is constructed Length Width Depth Date Completed Source
1 Concrete and granite 525 feet (160 m) 122 feet (37 m) 35 feet 9 inches (10.90 m) 1891 [21]
2 Concrete 741 feet (226 m) 120 feet (37 m) 31 feet 2 inches (9.50 m) 1910
3 Concrete 693 feet 4 inches (211.33 m) 114 feet (35 m) 35 feet 9 inches (10.90 m) 1940
4 Concrete 435 feet 8 inches (132.79 m) 104 feet (32 m) 22 feet 8 inches (6.91 m) 1942
January 1, 1946
Shipbuilding ways Width Length Source
1 108 feet 8 inches (33.12 m) 680 feet (210 m) [22]
2 89 feet (27 m) 398 feet (121 m)
308 feet (94 m)
3 93 feet (28 m) 488 feet (149 m)
4 96 feet (29 m) 450 feet (140 m)
5 96 feet (29 m) 450 feet (140 m)
6 96 feet (29 m) 450 feet (140 m)
7 96 feet (29 m) 450 feet (140 m)
8 96 feet (29 m) 450 feet (140 m)


Mare Island Naval Shipyard constructed at least eighty-nine seagoing vessels. Among the more important ships & boats built were:

The collier USS Jupiter was later converted to become the first United States aircraft carrier, USS Langley.
Five of the seven top-scoring United States submarines of World War II were built at Mare Island.

With the prelude to, and the outbreak of World War II, the Mare Island Naval Shipyard specialized in submarines, and other than a few submarine tenders and destroyer escorts, no more surface ships were built there. MINSY continued building non-nuclear subs through the Cold War including two of the three Barracuda-class submarines and USS Grayback, an early guided missile launcher. In 1955, Mare Island was awarded the contract to build Sargo, the first nuclear submarine laid down at a Pacific base.

The shipyard became one of the few that built and overhauled nuclear submarines, including several UGM-27 Polaris submarines. 1970 saw the launching of Drum, the last nuclear submarine built in California. In 1972, the Navy officially ceased building new nuclear submarines at Mare Island, though overhaul of existing vessels continued. Nautilus was decommissioned at Mare Island in 1980, then rigged for towing back to Groton, Connecticut, to serve as a museum of naval history.[27]

UGM-27 Polaris ballistic missile submarine USS Mariano G. Vallejo

Riverine training[edit]

Aerial photo of southern Mare Island and the shipyard facility
Mare Island Drydock No. 1

In 1966, during the Vietnam War, the U.S. Navy transferred their Brown Water Navy Riverine Training Operations from Coronado, California, to Mare Island. Motorists traveling along Highway 37 could often see U.S. Navy River Patrol Boats, among other river assault type boats, maneuvering through the sloughs of what is now the Napa-Sonoma State Wildlife Area, which borders the north and west portions of Mare Island.

U.S. Navy Reserve Units may still operate the slough portions of the State Wildlife Area for training purposes, as the navigable waters are considered public property. The U.S. Navy Brown Water Riverine Forces were inactivated after the Vietnam War, maintaining only the U.S. Naval Reserve PBRs and auxiliary craft at Mare Island, until the 1996 base closure.

U.S. Naval Construction Battalion Unit 421

Mare Island was also home to the Seabees CBU 421 who completed many construction projects in the bay area including renovation and restoration of St. Peter's chapel. St. Peter's is the oldest Navy Chapel in the United states built in 1901.

Pacific Reserve Fleet, Mare Island[edit]

Pacific Reserve Fleet, Mare Island was a large US reserve fleet that opened in 1946 to store the many surplus ships after World War II. As part of the United States Navy reserve fleets, the fleet "mothballed" ships and submarines. Some ships in the fleet were reactivated for the Korean War and Vietnam War.[55][56] The Reserve Fleet closed in 1996 with the shipyard. The ships were scrapped or moved to other reserve fleets.[57][58]

Base closure[edit]

Mare Island Naval Shipyard expanded to over 5,200 acres (2,104 ha) during its service life and was responsible for construction of over 500 naval vessels and overhauling thousands of other vessels. Though it remained a strong contender for continued operations, MINSY was identified for closure during the Base Realignment and Closure (BRAC) process of 1993. Naval operations ceased and the facility was decommissioned on 1 April 1996.

The California Conservation Corps, Touro University California, and numerous commercial and industrial businesses are currently leasing property aboard the former naval shipyard. In May 2000, the Navy completed the transfer of a former housing area called Roosevelt Terrace using an "economic development conveyance"; a method to accelerate the transfer of BRAC facilities back to civilian communities for their economic benefit. The Navy is also transferring property at the shipyard to other government agencies such as Fish and Wildlife Service refuge, a Forest Service office building, an Army Reserve Center, a Coast Guard communications facility, and a Department of Education school.

Appearances in popular culture[edit]

The shipyard was featured by Huell Howser in California's Gold Episode 704.[59]

See also[edit]



  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. 15 April 2008.
  2. ^ a b "First U.S. Naval Station in the Pacific". Office of Historic Preservation, California State Parks. Retrieved 15 October 2012.
  3. ^ a b "Mare Island Naval Shipyard". National Historic Landmarks Quioklinks. National Park Service. Archived from the original on 8 October 2012. Retrieved 18 March 2012.
  4. ^ Adams, George R. (1 December 1974). "Mare Island Naval Shipyard" (pdf). National Register of Historic Places – Inventory Nomination Form. National Park Service. Retrieved 18 May 2012.
  5. ^ a b Battleship Iowa: Mare Island
  6. ^ a b c d "The Frontier Coast". NOAA Central Library. 30 November 2007. Archived from the original on 25 February 2016.
  7. ^ Gudde, Dr. Erwin G. "Mutiny on the Ewing". Retrieved 2 January 2008. Originally published in The JOURNAL, Coast and Geodetic Survey, 1951-12-01, Number 4
  8. ^ McArthur, Lewis Pacific Coast Survey of 1849 and 1850 Private history 1915 retrieved 26 December 2007
  9. ^ "Mare Island Navy Yard". Overland Monthly. 1908. pp. 411–12.
  10. ^ Howe, Octavius T; Matthews, Frederick C. (1927). American Clipper Ships 1833–1858. Vol. 2, Malay-Young Mechanic. Salem, MA: Marine Research Society. pp. 653–656.
  11. ^ Lott, A Long Line of Ships, pages 3–134.
  12. ^ Mare Island was first California boot camp
  13. ^ Stephen C. Ruder, "Who Really Blew Up Mare Island?" Naval History (June 2022): 40-45.
  14. ^ Spencer Tucker and Priscilla Mary Roberts, ed. World War One: A Student Encyclopedia (ABC-Clio, 2005): 1606
  15. ^ Mare Island History. Vallejo Convention & Visitors Bureau website. Accessed 22 August 2007
  16. ^ Lott, A Long Line of Ships, pp. 161–180.
  17. ^ "U.S. Naval Activities World War II by State". Patrick Clancey. Retrieved 19 March 2012.
  18. ^ Kern, James & Vallejo and Naval Historical Museum Images of America: Vallejo. Arcadia Publishing, 2004.
  19. ^ FAS Military Analysis Network: Mare Island Naval Shipyard (MINSY)
  20. ^ Lott, A Long Line of Ships, pp. 209–237.
  21. ^ "Drydocking Facilities Characteristics" (PDF).
  22. ^ Gardiner Fassett, Frederick, The Shipbuilding Business in the United States of America, p. 177
  23. ^ Cutters, Craft & Coast Guard-Manned Army & Navy Vessels
  24. ^ a b Fahey, The Ships and Aircraft of the U.S. Fleet, p. 17
  25. ^ a b Blair, Silent Victory Vol. 2, p. 945
  26. ^ Tillman(2005)pp. 301–306
  27. ^ Chief of Naval Operations, Submarine Warfare Division: Submarine Chronology Archived 10 July 2007 at the Wayback Machine
  28. ^ Blair, Silent Victory Vol. 2, p. 907
  29. ^ Blair, Silent Victory Vol. 2, p. 926
  30. ^ Blair, Silent Victory Vol. 2, p. 939
  31. ^ Blair, Silent Victory Vol. 2, p. 946
  32. ^ Blair, Silent Victory Vol. 2, p. 919
  33. ^ a b c d Silverstone, U.S. Warships of World War II, p. 287
  34. ^ a b Silverstone, U.S. Warships of World War II, p. 195
  35. ^ a b Blair, Silent Victory Vol. 2, pp. 953υ
  36. ^ Blair, Silent Victory Vol. 2, pp. 945υ
  37. ^ a b c d e f Silverstone, U.S. Warships of World War II, p. 197
  38. ^ Blair, Silent Victory Vol. 2, pp. 913υ
  39. ^ a b c d Blair, Silent Victory Vol. 2, p.954
  40. ^ a b c Blair, Silent Victory Vol. 2, p. 953
  41. ^ Blair, Silent Victory Vol. 2, p. 918
  42. ^ a b c d Silverstone, U.S. Warships of World War II, p. 199
  43. ^ Blair, Silent Victory Vol. 2, p. 956
  44. ^ Blair, Silent Victory Vol. 2, pp. 933υ
  45. ^ a b Blair, Silent Victory Vol. 2, p. 957
  46. ^ a b c d e f Silverstone, U.S. Warships of World War II, p. 203
  47. ^ Blackman Jane's 1970–71, p. 473
  48. ^ Blackman Jane's 1970–71, p. 472
  49. ^ Blackman Jane's 1970–71, p. 470
  50. ^ Blackman Jane's 1970–71, p. 406
  51. ^ Blackman Jane's 1970–71, p. 469
  52. ^ a b Blackman Jane's 1970–71, p. 468
  53. ^ a b c d e f Blackman Jane's 1970–71, p. 403
  54. ^ a b c d e Blackman Jane's 1970–71, p. 466
  55. ^, The Mothball Fleet
  56. ^ The USN Mothball Fleet - Storing up for a rainy day
  57. ^ Pacific Reserve Fleet, Mare Island
  58. ^ US Navy Pacific Reserve Fleet, Mare Island
  59. ^ "Mare Island – California's Gold (704) – Huell Howser Archives at Chapman University".


  • Blackman, Raymond V.B. Jane's Fighting Ships 1970–71. London: Jane's Yearbooks.
  • Gardiner Fassett, Frederick (1 January 1948). The Shipbuilding Business in the United States of America. Society of Naval Architects and Marine Engineers.
  • Lott, Arnold S., Lt. Comdr., U.S.N. A Long Line of Ships: Mare Island's Century of Naval Activity in California. Annapolis: United States Naval Institute, 1954.
  • Silverstone, Paul H., U.S. Warships of World War II. New York: Doubleday & Company, 1968.
  • Steffes, James, ENC Retired. Swift Boat Down: The Real Story of the Sinking of PCF-19. (2006); ISBN 1-59926-612-1.
  • Tillman, Barrett Clash of the Carriers. New York: New American Library, 2005. ISBN 978-0-451-21956-5.
  • 1941 Society of Naval Architects Bulletin, Harold W. Linnehan, writing as a visitor from Design section, Mare Island, California.

External links[edit]