The end of the war caused most of the Liberty ships to be removed from service in 1946 and many were subsequently sold to foreign and domestic buyers. Others were retained by the U.S. Maritime Commission for potential reactivation in the event of future military conflicts. Jeremiah O'Brien was mothballed and remained in the National Defense Reserve Fleet in Suisun Bay for 33 years.
Restoration
In the 1970s, however, the idea of preserving an unaltered Liberty Ship began to be developed and, under the sponsorship of Rear Admiral Thomas J. Patterson, USMS, the ship was put aside for preservation instead of being sold for scrap. In a 1994 interview printed by the Vintage Preservation magazine Old Glory, Patterson claimed the ship was steamed to her anchorage in the mothball fleet, and frequently placed at the back of the list for disposal which undoubtedly contributed to her survival. An all-volunteer group, the National Liberty Ship Memorial, acquired Jeremiah O'Brien in 1979 for restoration. At that time, she was virtually the last Liberty at the anchorage. The volunteers who campaigned to resurrect the mothballed ship were able to get the steam plant operating while she remained in Suisun Bay. After more than three decades in mothballs, Jeremiah O'Brien's boilers were lit. The ship left the mothball fleet on 21 May 1980 bound for San Francisco Bay, drydocking, and thousands of hours of restoration work. She was the only Liberty Ship to leave the mothball fleet under her own power. Jeremiah O'Brien then moved to Fort Mason on the San Francisco waterfront just to the west of Fisherman's Wharf to become a museum ship dedicated to the men and women who built and sailed with the United States Merchant Marine in World War II. She was named a National Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers in 1984 and designated a National Historic Landmark in 1986. Licensed to carry tours around San Francisco Bay, it was suggested that the ship be restored to oceangoing specification. After efforts in securing sponsorship, this was accomplished in time for the 50th "D-Day" Anniversary Celebrations in 1994.
50th Anniversary of D-Day
In 1994, Jeremiah O'Brien steamed through the Golden Gate bound for France. She went down the West Coast, through the Panama Canal, and crossed the Atlantic for the first time since World War II. Stopping first in London, England, where she was berthed adjacent to HMS Belfast before she continued on to Normandy, where Jeremiah O'Brien and her crew participated in the 50th Anniversary of Operation Overlord, the allied invasion of Western Europe. She was the only large ship from the original Normandy flotilla to return for the event.
Today
Docked today at Pier 45, she makes several passenger-carrying daylight cruises each year in the San Francisco Bay, and occasional voyages to more distant ports such as Seattle and San Diego. Footage of the ship's engine was used in the 1997 film Titanic to depict the ill-fated ship's own triple-expansion engines. The engine is very similar to the engines on board the RMS Titanic, two of her engines were triple expansion marine steam engines, albeit Titanic engines were four cylinders as opposed to three. The ship is completely restored to its original World War 2 configuration. Most areas are open to the public, including the engine room, bridge, and cargo holds. Modernization has been kept to a minimum and mostly involves systems related to safety, communications, and navigation. On 23 May 2020, SS Jeremiah O'Brien and USS Pampanito were threatened by a 4-alarm fire at a warehouse structure next to where Jeremiah O'Brien was berthed at San Francisco's Pier 45, but both vessels were undamaged due the actions of the local firefighters. The fireboat St. Francis is credited with saving the ship.