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Pearl Harbor Naval Shipyard
The Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility is a United States Navy shipyard located in Pearl Harbor, Hawaii on 148 acres. It is one of just four public shipyards operated by the United States Navy. The shipyard is physically a part of Joint Base Pearl Harbor–Hickam. History Pearl Harbor started as naval facility and coaling station after a December 9, 1887, agreement. King Kalākaua granted the United States exclusive rights to use Pearl Harbor as a port and repair base. The United States–Hawaii relationship started with the Reciprocity Treaty of 1875, a free trade agreement. The Naval Station had existed in Pearl Harbor since 1898, but in 1908 the United States Congress allocated $3 million to build the shipyard, then called Navy Yard Pearl Harbor. The shipyard grew quickly, and work began on the first drydock, which collapsed before opening in 1913. After rebuilding, Dry Dock #1 was opened August 21, 1919. Through these years, the shipyard was ju ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pearl Harbor
Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reciprocity Treaty of 1875. Much of the harbor and surrounding lands are now a United States Navy deep-water naval base. It is also the headquarters of the United States Pacific Fleet. The U.S. government first obtained exclusive use of the inlet and the right to maintain a repair and coaling station for ships here in 1887. The Attack on Pearl Harbor, surprise attack on the harbor by the Imperial Japanese Navy on December 7, 1941, led the United States to United States declaration of war on Japan, declare war on the Empire of Japan, marking the American entry into World War II, United States' entry into World War II. History Pearl Harbor was originally an extensive shallow embayment called ''Wai Momi'' (meaning 'Waters of Pearl') or ''Puuloa' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Inactive Ship Maintenance Facility
A Naval Inactive Ship Maintenance Facility (NISMF) is a facility owned by the United States Navy as a holding facility for decommissioned naval vessels, pending determination of their final fate. All ships in these facilities are inactive, but some are still on the Naval Vessel Register (NVR), while others have been stricken from the register. The ships that have been stricken from the NVR are disposed of by one of several means, including foreign military sales transfer, ship donation as a museum or memorial, domestic dismantling and recycling, artificial reefing, or use as a target vessel. Others are retention assets for possible future reactivation, which have been laid up for long-term preservation and are maintained with minimal maintenance (humidity control, corrosion control, flood/fire watch) should they need to be recalled to active duty. The Navy has been reducing the number of inactive ships, which numbered as many as 195 in 1997, but was down to 49 by the end of 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean War
The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations Command (UNC) led by the United States. The conflict was one of the first major proxy wars of the Cold War. Fighting ended in 1953 with an armistice but no peace treaty, leading to the ongoing Korean conflict. After the end of World War II in 1945, Korea, which had been a Korea under Japanese rule, Japanese colony for 35 years, was Division of Korea, divided by the Soviet Union and the United States into two occupation zones at the 38th parallel north, 38th parallel, with plans for a future independent state. Due to political disagreements and influence from their backers, the zones formed their governments in 1948. North Korea was led by Kim Il S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Battleships Of The United States Navy
The United States Navy began the construction of battleships with in 1892, although its first ship to be designated as such was . ''Texas'' and , commissioned three years later in 1895, were part of the New Navy program of the late 19th century, a proposal by then Secretary of the Navy William H. Hunt to match Europe's navies that ignited a years-long debate that was suddenly settled in Hunt's favor when the Brazilian Empire commissioned the battleship . In 1890, Alfred Thayer Mahan's book '' The Influence of Sea Power upon History'' was published and significantly influenced future naval policy—as an indirect result of its influence on Secretary Benjamin F. Tracy, the Navy Act of June 30, 1890 authorized the construction of "three sea-going, coast-line battle ships" which became the . The Navy Act of July 19, 1892 authorized construction of a fourth "sea-going, coast-line battle ship", which became . Despite much later claims that these were to be purely defensive and were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallejo, California
Vallejo ( ; ) is a city in Solano County, California, United States, and the second largest city in the North Bay (San Francisco Bay Area), North Bay region of the San Francisco Bay Area, Bay Area. Located on the shores of San Pablo Bay, the city had a population of 126,090 at the 2020 United States census. Vallejo is home to the California State University Maritime Academy, California Maritime Academy, Touro University California and Six Flags Discovery Kingdom. Vallejo is named after Mariano Guadalupe Vallejo, the famed Californio general and statesman. The city was founded in 1851 on Gen. Vallejo's Rancho Suscol to serve as the capital city of California, which it was 1852–1853, after which the Government of California, Californian government moved to neighboring Benicia, California, Benicia, named in honor of Gen. Vallejo's wife Francisca Benicia Carrillo de Vallejo, Benicia Carrillo de Vallejo. The Mare Island Naval Shipyard was founded in 1854, and defined Vallejo's econ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mare Island
Mare Island (Spanish language, Spanish: ''Isla de la Yegua'') is a peninsula in the United States in the city of Vallejo, California, about northeast of San Francisco. The Napa River forms its eastern side as it enters the Carquinez Strait juncture with the east side of San Pablo Bay. Mare Island is a peninsula, as no full body of water separates this or several other named "islands" from the mainland. Instead, a series of small Slough (hydrology), sloughs cause seasonal water-flows among the so-called islands. Mare Island is the largest of these at about long and a mile wide. History In 1775, Spanish explorer Perez Ayala was the first European to land on what would become Mare Island – he named it ''Isla de la Plana''. This area was part of Rancho Suscol, deeded to General Mariano Guadalupe Vallejo in 1844. It became a waypoint for early settlers. In 1835, whilst traversing the Carquinez Strait, a crude ferry transporting men and livestock capsized in a squall. Among the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow (ship)
The bow () is the forward part of the hull of a ship or boat, the point that is usually most forward when the vessel is underway. The aft end of the boat is the stern. Prow may be used as a synonym for bow or it may mean the forward-most part of the bow above the waterline. Function A ship's bow should be designed to enable the hull to pass efficiently through the water. Bow shapes vary according to the speed of the boat, the seas or waterways being navigated, and the vessel's function. Where sea conditions are likely to promote pitching, it is useful if the bow provides reserve buoyancy; a flared bow (a raked stem with flared topsides) is ideal to reduce the amount of water shipped over the bow. Ideally, the bow should reduce the resistance and should be tall enough to prevent water from regularly washing over the top of it. Large commercial barges on inland waterways rarely meet big waves and may have remarkably little freeboard at the bow, whereas fast military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underwater Diving
Underwater diving, as a human activity, is the practice of descending below the water's surface to interact with the environment. It is also often referred to as diving (other), diving, an ambiguous term with several possible meanings, depending on context. Immersion in water and exposure to high ambient pressure have Physiology, physiological effects that limit the depths and duration possible in ambient pressure diving. Humans are not physiologically and anatomically well-adapted to the environmental conditions of diving, and various equipment has been developed to extend the depth and duration of human dives, and allow different types of work to be done. In ambient pressure diving, the diver is directly exposed to the pressure of the surrounding water. The ambient pressure diver may dive on breath-hold (freediving) or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique reduces the risk of decompression sickness ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Bridge Company
Pacific Bridge Company was a large engineering and construction company. During World War II, Pacific Bridge Company of Alameda, California was selected to build US Navy Auxiliary Repair Docks (ARD) a type of Auxiliary floating drydock and Type B ship barges. History The Pacific Bridge Company was founded by William Henry Gorrill in 1869. In 1942 The Pacific Bridge Company was chosen to build ships, because of their reputation and skills, particularly welding. Since the coastal shipyards were busy building large vessels for the war effort, such as aircraft carriers, battleships, cruisers and destroyers, there was no alternative but to use other builders, like Bridge builders for the production of small and medium ships. Pacific Bridge Company built the first nine N3-S-A1, Type N3 ship cargo ship sent to Britain in 1943. The type N3 ships were a Maritime Commission small coastal cargo ship designed to meet urgent World War II shipping needs. Two of the N3 ships were completed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Railway
A patent slip or marine railway is an inclined plane extending from shoreline into water, featuring a "cradle" onto which a ship is first floated, and a mechanism to haul the ship, attached to the cradle, out of the water onto a slip. The marine railway was invented by a Scot, Thomas Morton, in the early 19th century, as a cheaper alternative to dry docks for marine vessel repairs, in particular below waterline. Larger modern marine railways can handle vessels of thousands of tons. History Invented by shipwright Thomas Morton in 1818, the marine railway offered an alternative to the expensive and time-consuming process of dry docking a ship to perform maintenance or repairs to its hull below waterline. The means and mechanisms over time became various, but always include a "cradle" onto which the ship is floated, and a mechanical mechanism for transferring the ship from water to land up an incline. The destination where work was performed was termed the slip. Thomas Morton p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YFD-2
YFD-2 (Yard Floating Dock-2, USS ''YFD-2'') was an auxiliary floating drydock built for the United States Navy in 1901. The first parts were laid down in early 1901 at Maryland Steel Co. of Sparrows Point, Maryland. YFD-2 was the first of its kind, steel movable auxiliary floating drydock, used to raise large ships out the water for repair below the ship's waterline. YFD-2 had a 18,000 tons lifting capacity. New Orleans Navy Yard YFD-2 was towed to her station in the Navy Yard near New Orleans at Algiers, New Orleans, Louisiana on 6 November 1901. It took four steam tugboats: the ''Orion'', ''Taurus'', ''Peerless'', and ''Volunteer'' to tow YFD-2 from Maryland to New Orleans. YFD-2 was a new state of the art machine for its time. USS ''Stranger'' with the Louisiana governor, William Wright Heard and the New Orleans mayor, Paul Capdevielle where there to greet the arrival. A New Orleans parade was held to celebrate the arrival. The first United States Navy ship repaired was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auxiliary Floating Drydock
An auxiliary floating drydock is a type of US Navy List of auxiliaries of the United States Navy, auxiliary Dry dock#Floating, floating dry dock. Floating dry docks are able to submerge underwater and to be placed under a ship in need of repair below the water line. Water is then pumped out of the floating dry dock, raising the ship out of the water. The ship becomes blocked on the deck of the floating dry dock for repair. Most floating dry docks have no engine and are towed by tugboats to their destinations. Floating dry docks come in different sizes to accommodate varying ship sizes, while large floating dry docks come in sections and can be combined to increase their size and lift power. Ballast tank, Ballast Pontoon (boat), pontoon Water tank, tanks are flooded with water to Underwater, submerge or pumped dry to raise the ship. World War II At the start of World War II, the US Navy had only three steel Auxiliary ship, auxiliary floating dry docks: To reduce travel time for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
