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The Ohio class of nuclear-powered submarines is the sole class of ballistic missile submarines (SSBN) currently in service with the United States Navy. Fourteen of the eighteen boats are SSBNs, which, along with U.S. Air Force strategic bombers and intercontinental ballistic missiles, constitute the nuclear-deterrent triad of the U.S. The remaining four have been converted from their initial roles as SSBNs to cruise missile submarines (SSGNs). The Ohio-class boats, each displacing 18,750 tons submerged, are the third largest submarines in the world, behind the 48,000-ton Typhoon class and 24,000-ton Borei class of the Russian Navy. The Ohio class replaced the Benjamin Franklin- and Lafayette-class SSBNs.
A ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, USS Carl Vinson is a nuclear aircraft carrier of the Nimitz class.
The Naval Vessel Register (NVR) is the official inventory of ships and service craft in custody of or titled by the United States Navy. It contains information on ships and service craft that make up the official inventory of the Navy from the time a vessel is authorized through its life cycle and disposal. It also includes ships that have been removed from the register, but not disposed of by sale, transfer to another government, or other means. Ships and service craft disposed of prior to 1987 are currently not included, but are gradually being added along with other updates.
The United States Merchant Marine Academy is a United States service academy in Kings Point, New York. It trains officers for the United States Merchant Marine, branches of the military, and the transportation industry. Midshipmen are trained in marine engineering, navigation, ship's administration, maritime law, personnel management, international law, customs, and many other subjects important to the task of running a large ship.
A Sea Service Ribbon is an award of the United States Navy, U.S. Marine Corps, U.S. Coast Guard, the U.S. Army, and the NOAA Commissioned Officer Corps which recognizes those service members who have performed military duty while stationed on a United States Navy, Coast Guard, Army, or NOAA vessel at sea and/or members of the Navy, Marine Corps or Coast Guard who have been forward-deployed with their home unit.
This is a conversion chart showing how the Dewey Decimal and Library of Congress Classification systems organize resources by concept, in part for the purpose of assigning call numbers. These two systems account for over 95% of the classification in United States libraries, and are used widely around the world.
The structure of the United States Navy consists of four main bodies: the Office of the Secretary of the Navy, the Office of the Chief of Naval Operations, the operating forces, and the Shore Establishment.
Class Z: Bibliography. Library Science. Information resources is a classification used by the Library of Congress Classification system. This page outlines the sub-classes of Class Z.
Class U: Military Science is a classification used by the Library of Congress Classification system. This page outlines the sub-classes of Class U.
Class S: Agriculture is a classification used by the Library of Congress Classification system. This page outlines the subclasses of Class S.
Class Q: Science is a classification used by the Library of Congress Classification system. This article outlines the subclasses of Class Q.
Class N:Fine Arts is a classification used by the Library of Congress Classification system. This page outlines the subclasses of Class N.
Class J: Political science is a classification used by the Library of Congress Classification system. This article outlines the subclasses of Class J.
Class H: Social Sciences is a classification used by the Library of Congress Classification system. This article outlines the subclasses of Class H.
Class G: Geography, Anthropology, Recreation is a classification used by the Library of Congress Classification system. This article outlines the subclasses of Class G.
Class P: Language and Literature is a classification used by the Library of Congress Classification system. This page outlines the subclasses of Class P. It contains 19 sub-classifications, 12 of which are dedicated to language families and geographic groups of languages, and 10 sub-classifications of literature .
Class C: Auxiliary Sciences of History is a classification used by the Library of Congress Classification system. This article outlines the subclasses of Class C.
Class A: General Works is a classification used by the United States Library of Congress Classification system. This article outlines the subclasses of Class A.
The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. It is the largest and most capable navy in the world and it has been estimated that in terms of tonnage of its active battle fleet alone, it is larger than the next 13 navies combined, which includes 11 U.S. allies or partner nations. It has the highest combined battle fleet tonnage and the world's largest aircraft carrier fleet, with eleven in service, and two new carriers under construction. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the U.S. Navy is the third largest of the U.S. military service branches in terms of personnel. It has 290 deployable combat vessels and more than 3,700 operational aircraft as of June 2019, making it the third-largest air force in the world, after the United States Air Force and the United States Army.
References
- ↑ "Library of Congress Classification Outline: Class V - Naval Science. Information resources" (PDF). Library of Congress. 2019-01-28. Retrieved 2019-01-28.
- ↑ "Library of Congress Classification Full Text: CLASS U - Military Science and Class V - Nacal Science" (PDF). Library of Congress. 2019-05-01. Retrieved 2019-05-01.