By August 1781 the Continental Navy had shrunk to just two active warships. Luckily for the colonists, France had joined their side. In a major September 1781 naval battle, the French gained control of the Chesapeake Bay, thus paving the way for the British surrender at Yorktown the following month.
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The Navy (haphazardly) fought the slave trade even as slavery continued. In 1807 Congress banned the importation of new slaves into the United States (though not slavery itself, which continued in the South). For the next 35 years, enforcement of this law was sporadic at best.
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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. The U.S. Navy is the largest, most capable navy in the world, with the highest combined battle fleet tonnage. The U.S. Navy has the world's largest aircraft carrier fleet, with ten in service, two in the reserve fleet, and three new carriers under construction.
https://en.wikipedia.org/wiki/United_States_Navy
By war's end in 1945, the United States Navy had added hundreds of new ships, including 18 aircraft carriers and 8 battleships, and had over 70% of the world's total numbers and total tonnage of naval vessels of 1,000 tons or greater. At its peak, the U.S. Navy was operating 6,768 ships on V-J Day in August 1945.
https://en.wikipedia.org/wiki/United_States_Navy
In 1794, the first six commissioned ships in the new United States Navy were known as sailing frigates, a class of ships that became the backbone of the Navy. Since then, frigates have been redesigned and commissioned from the 1960s through the 1980s, with 23 vessels still in active service.
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Before the dangers of asbestos were widely known, the U.S. Navy added the toxic mineral to more than 300 products commonly found aboard its ships — a decision that placed veterans at risk for mesothelioma and other serious respiratory illnesses.
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The Navy was outnumbered about 40 to 1 in the War of 1812. At the start of the War of 1812, the U.S. Navy had only 16 seagoing warships at its disposal, compared to more than 600 on the British side. Even with most of the Royal Navy occupied fighting Napoleon in Europe, a stifling blockade of the Atlantic coast took shape.
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Without the protection of the Royal Navy, U.S. merchant ships began coming under attack from the so-called Barbary pirates of North Africa (which, in reality, were more like privateers). American sailors were seized and imprisoned in 1785 and then again in 1793.
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Since World War II, aircraft carriers remained the Navy's main force choice. The United States has responded with at least one aircraft carrier in more than 80 percent of the nation's involvement in international conflict.
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The current naval jack of the United States is the First Navy Jack, traditionally regarded as having been used during the American Revolutionary War. On 31 May 2002, Secretary of the Navy Gordon R. England directed all U.S. naval ships to fly the First Navy Jack for the duration of the War on Terror.
https://en.wikipedia.org/wiki/United_States_Navy
when did the us navy start
The United States Navy was started in 1794. The US navy was start in 1794.