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A blue and white flag (the flag for the letter P) hoisted at the foretrucks of ships about to sail. Formerly a white ship on a blue ground, but later a white square on a blue ground. blue water 1. That part of the ocean lying more than a few hundred nautical mile s from shore, and thus beyond the outer boundary of green water. 2.
The elements of maritime geography are loosely defined and their meanings have changed throughout history. The USA's 2010 Naval Operations Concept defines blue water as "the open ocean", green water as "coastal waters, ports and harbors", and brown water as "navigable rivers and their estuaries". [1]
The jack of the United States, referred to as the Union Jack [1] by the U.S. Navy, is a maritime jack flag flown on the bow of U.S. vessels that are moored or anchored. In addition to commissioned U.S. Navy ships, the jack is used by the U.S. Coast Guard, [2] the Military Sealift Command, the ships of the National Oceanic and Atmospheric Administration, and other U.S. government entities.
A blue-water navy is a maritime force capable of operating globally, essentially across the deep waters of open oceans. [1] While definitions of what actually constitutes such a force vary, there is a requirement for the ability to exercise sea control at long range. The term "blue-water navy" is a maritime geographical term in contrast with ...
The first war that an organized United States Merchant Marine took part in was the American Revolutionary War, which lasted from 1775 to 1783.The first merchant marine action in the war took place on June 12, 1775, when a group of Machias, Maine citizens, after hearing the news of what happened in Concord and Lexington, boarded and captured the schooner British warship HMS Margaretta.
The history of navigation, or the history of seafaring, is the art of directing vessels upon the open sea through the establishment of its position and course by means of traditional practice, geometry, astronomy, or special instruments. Many peoples have excelled as seafarers, prominent among them the Austronesians (Islander Southeast Asians ...
The United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. [2] Established in 1830 as the Depot of Charts and Instruments, it is one of the oldest scientific agencies in the United States ...
History of the United States Navy. USS United States, the first of the original six frigates of the United States Navy, seen here defeating HMS Macedonian in battle, before taking her as a prize during the War of 1812. USS Gerald R. Ford, as of 2018, is the US Navy's latest and most advanced nuclear powered aircraft carrier, and the largest ...