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[1] Starboard: the right side of the ship, when facing forward (opposite of "port"). [1] Stern: the rear of a ship (opposite of "bow"). [1] Topside: the top portion of the outer surface of a ship on each side above the waterline. [1] Underdeck: a lower deck of a ship. [22] Yardarm: an end of a yard spar below a sail.
The course is to be distinguished from the heading, which is the direction where the watercraft's bow or the aircraft's nose is pointed. [1] [2] [3] [page needed] The path that a vessel follows is called a track or, in the case of aircraft, ground track (also known as course made good or course over the ground). [1] The intended track is a route.
The oldest sailing directions, dating back to the middle ages, descended directly from the Greek and Roman periplii: in classical times, in the absence of real nautical charts, navigation was carried out using books that described the coast, not necessarily intended for navigation, but more often consisting of reports of previous voyages, or celebrations of the deeds of leaders or rulers.
A rutter is a mariner's handbook of written sailing directions. Before the advent of nautical charts , rutters were the primary store of geographic information for maritime navigation . It was known as a periplus ("sailing-around" book) in classical antiquity and a portolano ("port book") to medieval Italian sailors in the Mediterranean Sea .
1 - True North 2 - Heading, the direction the vessel is "pointing towards" 3 - Magnetic north, which differs from true north by the magnetic variation. 4 - Compass north, including a two-part error; the magnetic variation (6) and the ship's own magnetic field (5) 5 - Magnetic deviation, caused by vessel's magnetic field.
Nautical publications is a technical term used in maritime circles describing a set of publications, either published by national governments or by commercial and professional organisations, for use in safe navigation of ships, boats, and similar vessels.
Longitude (The first 2 or 3 digits denote degrees; the last 2 denote minutes.) H Hotel: Per pale argent and gules "I have a pilot on board." [b] I India: Or, a pellet "I am altering my course to port." [b] J Juliett: Azure, a fess argent "I am on fire and have dangerous cargo on board: keep well clear of me."
Direction determined to be clearest of enemy air-to-air activity. Greyhound Friendly ground attack cruise missile (for example, Tomahawk land attack missile (TLAM) and conventional air-launched cruise missile (CALCM)). Group Radar targets within approximately 3 nautical miles (3.5 mi; 5.6 km) of each other. Guns An air-to-air or air-to-surface ...