The vessel was a steamship built in 1958. At its final port of call, Sansinena had discharged its cargo of crude oil and was taking on ballast and fuel when a massive explosion split the ship in half and obliterated multiple port buildings. The blast shattered windows for miles around, flung the entire midship bridge on the wharf, and triggered a fire that spread across the dock and around the tanker. The Los Angeles Fire Department soon arrived on the scene to contain the blaze and rescue survivors. One of the fires, fed by underground fuel lines, burned for four days.
A United States Coast Guard investigation later concluded that the incident was caused by flammable hydrocarbon vapor buildup on the deck of the ship caused by a poorly designed and deteriorating venting system as well as an unsafe practice (leaving all vents open during ballasting). The ignition source was never identified.
The official casualty count was:
9 dead, eight crew and one dock security guard)
46 injured, 9 requiring hospitalization
The explosion of Sansinena and technical details of the incident were featured as the first segment of the Engineering Disasters of the 1970s' episode of History Channel's Modern Marvels television series.
The Port of Los Angeles is a seaport managed by the Los Angeles Harbor Department, a unit of the City of Los Angeles. It occupies 7,500 acres (3,000 ha) of land and water with 43 miles (69 km) of waterfront and adjoins the separate Port of Long Beach. Promoted as "America's Port", the port is located in San Pedro Bay in the San Pedro and Wilmington neighborhoods of Los Angeles, approximately 20 miles (32 km) south of downtown.
Vigor Shipyards is the current entity operating the former Todd Shipyards after its acquisition in 2011. Todd Shipyards was founded in 1916, which owned and operated shipyards on the West Coast of the United States, East Coast of the United States and the Gulf. Todd Shipyards were a major part of the Emergency Shipbuilding Program for World War II.
The T2 tanker, or T2, was a class of oil tanker constructed and produced in large quantities in the United States during World War II. Only the T3 tankers were larger "navy oilers" of the period. Some 533 T2s were built between 1940 and the end of 1945. They were used to transport fuel oil, diesel fuel, gasoline and sometimes black oil-crude oil. Post war many T2s remained in use; like other hastily built World War II ships pressed into peacetime service, there were safety concerns. As was found during the war, the United States Coast Guard Marine Board of Investigation in 1952 stated that in cold weather the ships were prone to metal fatigue cracking, so were "belted" with steel straps. This occurred after two T2s, Pendleton and Fort Mercer, split in two off Cape Cod within hours of each other. Pendleton's sinking is memorialized in The Finest Hours. Engineering inquiries into the problem suggested the cause was poor welding techniques. It was found the steel was not well suited for the new wartime welding construction. The high sulfur content made the steel brittle and prone to metal fatigue at lower temperatures.
SS Lane Victory is an American Victory-class cargo ship used in World War II, the Korean War and Vietnam War. The ship was preserved in 1989 to serve as a museum ship in the San Pedro area of Los Angeles, California. As a rare surviving Victory ship, she was designated a U.S. National Historic Landmark.
USS Serpens (AK-97) was a Crater-class cargo ship commissioned by the United States Navy for service in World War II. She was the first ship of the US Navy to have this name: she is named after Serpens, a constellation in the northern hemisphere. Serpens was crewed by United States Coast Guard personnel and was responsible for delivering troops, goods and equipment to locations in the Asiatic-Pacific Theater.
SS Marine Sulphur Queen, formally Esso New Haven, was T2 tanker converted to carry molten sulphur. It is notable for its disappearance in 1963 near the southern coast of Florida, taking the lives of 39 crewmen.
California Shipbuilding Corporation built 467 Liberty and Victory ships during World War II, including Haskell-class attack transports. California Shipbuilding Corporation was often referred to as Calship. The Dictionary of American Naval Fighting Ships sometimes refers to this shipyard as California Shipbuilding Co., but Company appears to be an error.
The Los Angeles Maritime Museum is a non-profit maritime museum, located at Sixth Street at Harbor Boulevard in the community of San Pedro, in Los Angeles, California.
Ralph J. Scott, also formerly known as Fireboat #2, is a 100-foot (30 m) fireboat that was attached to the Los Angeles Fire Department serving the Port of Los Angeles. She was retired in 2003 after 78 years and replaced by Warner L. Lawrence. Ralph J. Scott is undergoing restoration near the Los Angeles Maritime Museum in San Pedro. On 30 June 1989, she was listed as a National Historic Landmark. She is currently located at the Los Angeles Fire Department, Fire Station 112, at 444 South Harbor Blvd, Berth 86, San Pedro, California.
SS Malolo was a passenger liner, later cruise ship, built by William Cramp & Sons, Philadelphia, in 1926 for the Matson Line. She was the first of a number of ships designed by William Francis Gibbs for the line, which did much to develop tourism in the Hawaiian Islands. In 1927, Matson commissioned its largest ship yet, the Malolo for the first-class luxury service between San Francisco, Los Angeles, and Honolulu. The Malolo and other Matson liners advertised superb public rooms, spacious cabins, swimming pools, a gymnasium, and a staff, including a hairdresser, to provide a high standard of service.
SS Mauna Loa was a steam-powered cargo ship of the Matson Navigation Company that was sunk in the bombing of Darwin in February 1942. She was christened SS West Conob in 1919 and renamed SS Golden Eagle in 1928. At the time of her completion in 1919, the ship was inspected by the United States Navy for possible use as USS West Conob (ID-4033) but was neither taken into the Navy nor commissioned.
Montebello was a steam oil tanker built in 1920–1921 by the Southwestern Shipbuilding Co. of San Pedro for Union Oil Company with the intention of carrying oil and petroleum products along the West Coast of the United States and Canada as well as between the United States and Chile. In December 1941 the tanker was sunk on one of her regular trips by the Japanese submarine I-21.
SS Golar Patricia was an oil tanker built by Kawasaki Heavy Industries of Sakaide in Japan for Gotaas-Larsen Shipping Company and launched in 1969. Gotaas-Larsen is a Norwegian company but it registered Golar Patricia in Monrovia to use the Liberian flag of convenience.
Todd Pacific Shipyards, Los Angeles Division was a shipyard in San Pedro, Los Angeles, California. Before applying its last corporate name, the shipyard had been called Los Angeles Shipbuilding & Dry Dock Company and Todd Shipyards, Los Angeles Division. Under those three names, the San Pedro yard built at least 130 ships from 1917 to 1989.
The SS Rutland Victory was a Victory ship built during World War II under the Emergency Shipbuilding program. It was built and launched by the Oregon Shipbuilding Corporation on May 9, 1944, and completed on May 29, 1944. The ship's United States Maritime Commission designation was VC2-S-AP3 and hull number 104 (1020). The ship was Oregon Shipbuilding Corporation's 20th victory ship. The Maritime Commission turned it over for Merchant navy operation to a civilian contractor, the United States Lines.
California during World War II was a major contributor to the World War II effort. California's long Pacific Ocean coastline provided the support needed for the Pacific War. California also supported the war in Europe. After the Japanese attack on Pearl Harbor, Hawaii, on December 7, 1941, most of California's manufacturing was shifted to the war effort. California became a major ship builder and aircraft manufacturer. Existing military installations were enlarged and many new ones were built. California trained many of the troops before their oversea deployment. Over 800,000 Californians served in the United States Armed Forces. California agriculture, ranches and farms were used to feed the troops around the world. California's long coastline also put the state in fear, as an attack on California seemed likely. California was used for the temporary and permanent internment camps for Japanese Americans. The population of California grew significantly, largely due to servicemen who were stationed at the new military bases/training facilities and mass influx of workers from around the U.S. in the growing defense industries. With all the new economy activity, California was lifted out of the great depression. Over 500,000 people moved to California from other states to work in the growing economy. California expanded its oil and mineral production to keep up with the war demand.
R. W. Gallagher was a steam turbine-powered tanker built in 1938 by Bethlehem Shipbuilding Corporation of Quincy for Standard Oil Company of New Jersey with intention of operating between the oil-producing ports of the southern United States and Mexico and the Northeast. The tanker spent her entire career in coastwise trade and was torpedoed and sunk on one of regular journeys in July 1942 by German submarine U-67.
Al Larson Boat Shop or Al Larson Boat Building is a shipbuilding and dry dock repair company in San Pedro, California on Terminal Island. To support the World War 2 demand for ships Al Larson Boat Shop built: US Navy Sub chasers and Minesweepers. Al Larson Boat Shop was started in 1903 by Peter Adolph (Al) Larson, a Swedish immigrant. Larson started by building boats by hand from Pacific Northwest lumber. As the shop grew, he moved to its current location in Fish Harbor, in the Port of Los Angeles. Adolph Larson's son sold the boat shop in 1960 to Andy and Gloria Wall. The shop was small at this time with only five employees. The Wall family is still running the shipyard in the Port of Los Angeles. The shipyard is the only one in the Port of Los Angeles now operating and able to work on ships of all sizes with its 100 employees. The shipyard is at 1046 South Seaside Ave, Terminal Island, with 2.35 acres of land and 5.35 acres of waterways. The shipyard also runs a marina, Al Larson Marina.
USS LSM-380 was a LSM-1-class landing ship medium in the United States Navy during World War II. She was later sold to Fred Devine to be used as a salvage ship, renamed MV Salvage Chief. She is the last known surviving LSM of World War II in the world.
General Steamship Company was founded in 1920 in Houston, Texas, as a Private Company, and now goes by Gensteam since 1996. General Steamship Company has a fleet of cargo ships that operate worldwide. Gensteam has a Gensteam Operations Desk website that tracks all shipping logistics. Gensteam headquarters is now in San Francisco, California. General Steamship Company was part owner of American Pacific Steamship Company in New York state and Los Angeles during and post World War II. American Pacific Steamship Company was founded in 1942 in New York City, and was previously called Los Angeles Tanker Operators Inc. which operated T2 tanker ships. During World War II the General Steamship Company and American Pacific Steamship Company were active with charter shipping with the Maritime Commission and War Shipping Administration.
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