{"nrhp_refnum":"78003405","name":"SS JEREMIAH O'BRIEN","other_names":["See Also:SS JEREMIAH O'BRIEN"],"category":"structure","location":{"address":"Pier 3, Fort Mason Center","address_restricted":false,"city":"San Francisco","county":"San Francisco","state":"CA","lat":37.808090562000075,"lon":-122.42970306599995,"geom_source":"nps_gis"},"listed_date":"1978-06-07","is_nhl":true,"nhl_designated_date":"1986-01-14","areas_of_significance":["Military"],"significance_levels":["national"],"summary":{"what_it_is":"A World War II Liberty ship (EC-2 type cargo vessel, MCE Hull 806) built in 1943 by the New England Shipbuilding Corporation at South Portland, Maine. At listing it lay in the National Defense Reserve Fleet in Suisun Bay; it is now berthed at Pier 45 in San Francisco.","why_significant":"The nomination calls it the sole intact survivor of 2,751 Liberty ships, the largest single class of ships ever built. It is not tied to any particular battle or convoy. It is significant as a representative of its type, with its original design unaltered, in military, engineering, wartime commerce and transportation history.","narrative":"Launched on June 19, 1943, at South Portland, Maine, this steam-powered cargo ship is the last Liberty ship to survive with its original design intact. Liberty ships were built quickly in 18 shipyards to relieve a critical wartime shortage of cargo vessels, and 2,751 were produced. This one measures just over 441 feet long and was powered by a triple-expansion steam engine. During the war it was operated by the Grace Line and carried dry cargoes such as ammunition and grain between the East Coast, the United Kingdom and the Continent. In 1946 it returned to the Pacific Coast from Australia and was then placed in reserve in Suisun Bay, California. It was chosen for preservation because it had never been altered or modified. Although it saw no famous action, it represents a ship type that was central to American military supply, wartime commerce and transportation. It is named for the Maine sea captain who won an early naval fight of the Revolution.","period_of_significance":"1943 - 1946","architect_builder":"New England Shipbuilding Corp.","architectural_style":null,"criteria":[],"status_note":"Condition rated fair at listing; unaltered since built, though the exterior needed refurbishing and repainting after years without preservation. Later amended to note the ship was refurbished and moved to San Francisco.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.322021-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/78003405.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78003405/2dfdafc7c5-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78003405/2dfdafc7c5-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Jeremiah_O%27Brien_(Liberty_ship,_San_Francisco).JPG\" rel=\"noopener\">Sanfranman59</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Jeremiah_O%27Brien_(Liberty_ship,_San_Francisco).JPG"},"district":{"nrhp_refnum":"79000530","name":"Fort Mason Historic District (Boundary Increase)","url":"https://nationalhistoricalregister.com/districts/california/fort-mason-historic-district-boundary-increase-79000530/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861315","wikipedia":"https://en.wikipedia.org/wiki/SS_Jeremiah_O%27Brien","wikidata":"https://www.wikidata.org/wiki/Q2464180"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-francisco/ss-jeremiah-obrien-78003405/"}