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United States Merchant Marines : ウィキペディア英語版
United States Merchant Marine

The United States Merchant Marine〔Many English-speaking countries call their fleet the Merchant Navy. Terms similar to merchant marine are used in, for example, the French Marine Marchande and the Spanish Marina Mercante.〕 are United States civilian mariners and a fleet of U.S. civilian and federally owned merchant vessels. These fleets are managed by either the government or private sector, and engage in commerce or transportation of goods and services in and out of the navigable waters of the United States. The Merchant Marine is responsible for transporting cargo and passengers during peacetime. In time of war, the Merchant Marine can be an auxiliary to the Navy, and can be called upon to deliver military personnel and materiel for the military.
Merchant mariners move cargo and passengers between nations and within the United States, and operate and maintain deep-sea merchant ships, tugboats, towboats, ferries, dredges, excursion vessels, charter boats and other waterborne craft on the oceans, the Great Lakes, rivers, canals, harbors, and other waterways.
As of 2006, the United States merchant fleet had 465 privately owned ships of 1,000 or more gross register tons. Nearly 800 American-owned ships are flagged in other nations.〔In 2006, 264 American ships are registered in the Bahamas and the Marshall Islands, widely considered flag of convenience countries.〕〔(【引用サイトリンク】url=https://www.cia.gov/library/publications/the-world-factbook/geos/us.html )
The federal government maintains fleets of merchant ships via organizations such as Military Sealift Command and the National Defense Reserve Fleet, which is managed by the United States Maritime Administration. In 2004, the federal government employed approximately 5% of all American water transportation workers.〔(【引用サイトリンク】title= Water Transportation Occupations )
In the 19th and 20th centuries, various laws fundamentally changed the course of American merchant shipping. These laws put an end to common practices such as flogging and shanghaiing, and increased shipboard safety and living standards. The United States Merchant Marine is also governed by several international conventions to promote safety and prevent pollution.
(P.L. 95–202 ), approved November 23, 1977, granted veteran status to Women Airforce Service Pilots and "any person in any other similarly situated group" with jurisdiction for determination given to the Secretary of Defense who delegated that determination to the Secretary of the Air Force. Although they suffered the greatest casualty rate of any service, merchant mariners who served in World War II were denied such recognition until 1988 when a federal court ordered it. The Court held that: "Secretary of Air Force abused its discretion in denying active military service recognition to American merchant seamen who participated in World War II."〔
==Shipboard operations==

Captains, mates (officers), and pilots supervise ship operations on domestic waterways and the high seas. A captain (master) is in overall command of a vessel, and supervises the work of other officers and crew. A captain has the ability to take the conn from a mate or pilot at any time he feels the need. On smaller vessels the captain may be a regular watch-stander, similar to a mate, directly controlling the vessel's position. Captains and department heads〔Typical departments include the deck department, engineering department, and steward's department.〕 ensure that proper procedures and safety practices are followed, ensure that machinery is in good working order, and oversee the loading and discharging of cargo and passengers. Captains directly communicate with the company or command (MSC), and are overall responsible for cargo, various logs, ship's documents, credentials, efforts at controlling pollution and passengers carried.
Mates direct a ship's routine operation for the captain during work shifts, which are called watches. Mates stand watch for specified periods, usually in three duty sections, with 4 hours on watch and 8 hours off.〔On smaller vessels, there may be only one mate (called a pilot on some inland towing vessels), who alternates watches with the captain. The mate would assume command of the ship if the captain became incapacitated.〕 When on a navigational watch, mates direct a bridge team by conning, directing courses through the helmsman and speed through the lee helmsman (or directly in open ocean). When more than one mate is necessary aboard a ship, they typically are designated chief mate or first mate, second mate and third mate. In addition to watch standers, mates directly supervise the ship's crew, and are assigned other tasks. The chief mate is usually in charge of cargo, stability and the deck crew, the second mate in charge of navigation plans and updates and the third mate as the safety officer. They also monitor and direct deck crew operations, such as directing line handlers during moorings, and anchorings, monitor cargo operations and supervise crew members engaged in maintenance and the vessel's upkeep.
Harbor pilots guide ships in and out of confined waterways, such as harbors, where a familiarity with local conditions is of prime importance.〔On river and canal vessels, pilots are usually are regular crew members, like mates.〕 Harbor pilots are generally independent contractors who accompany vessels while they enter or leave port, and may pilot many ships in a single day.
Ship's engineers operate, maintain, and repair engines, boilers, generators, pumps, and other machinery. Merchant marine vessels usually have four engineering officers: a chief engineer and a first, second, and third assistant engineer. On many ships, Assistant Engineers stand periodic watches, overseeing the safe operation of engines and other machinery. However, most modern ships sailing today utilize Unmanned Machinery Space (UMS) automation technology, and Assistant Engineers are Dayworkers. At night and during meals and breaks, the engine room is unmanned and machinery alarms are answered by the Duty Engineer.
Able seamen and ordinary seamen operate the vessel and its deck equipment under officer supervision and keep their assigned areas in good order.〔On inland waters, able seamen may simply be called "deckhands."〕 They watch for other vessels and obstructions in the ship's path, as well as for navigational aids such as buoys and lighthouses. They also steer the ship, measure water depth in shallow water, and maintain and operate deck equipment such as lifeboats, anchors, and cargo-handling gear. On tankers, mariners designated as pumpmen hook up hoses, operate pumps, and clean tanks. When arriving at or leaving a dock, they handle the mooring lines. Seamen also perform routine maintenance chores, such as repairing lines, chipping rust, and painting and cleaning decks. On larger vessels, a boatswain — or head seaman — will supervise the work.
Marine oilers and more experienced qualified members of the engine department, or QMEDs, maintain the vessel in proper running order in the engine spaces below decks, under the direction of the ship's engineering officers. These workers lubricate gears, shafts, bearings, and other moving parts of engines and motors; read pressure and temperature gauges, record data and sometimes assist with repairs and adjust machinery. Wipers are the entry-level workers in the engine room, holding a position similar to that of ordinary seamen of the deck crew. They clean and paint the engine room and its equipment and assist the others in maintenance and repair work. With more experience, they become oilers and firemen.
As of 2011, a typical deep-sea merchant ship has a captain, three mates, a chief engineer and three assistant engineers, plus six or more unlicensed seamen, such as able seamen, oilers, QMEDs, and cooks or food handlers.〔The size and service of the ship determine the number of crewmembers for a particular voyage.〕 Other unlicensed positions on a large ship may include electricians and machinery mechanics.〔Small vessels operating in harbors, on rivers, or along the coast may have a crew comprising only a captain and one deckhand. The cooking responsibilities usually fall under the deckhands' duties. On larger coastal ships, the crew may include a captain, a mate or pilot, an engineer, and seven or eight seamen. Some ships may have special unlicensed positions for entry level apprentice trainees.〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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