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Port and starboard are nautical terms for watercraft and spacecraft, referring respectively to the left and right sides of the vessel, when aboard and facing the bow (front). Vessels with bilateral symmetry have left and right halves which are mirror images of each other.
System A: Red port / green starboard marks when entering from sea into Le Palais, France. comprises Europe, Africa, and most of Asia and Oceania, as well as Greenland. port marks are red and may have a red flashing light of any rhythm except 2+1. starboard marks are green and may have a green flashing light of any rhythm except 2+1.
Port: the left side of the ship, when facing forward (opposite of "starboard"). [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 ...
2. A position half way between the port and starboard sides of a ship or boat, as in "helm amidships", when the rudder is in line with the keel. [13] ammunition ship A naval auxiliary ship specifically configured to carry ammunition, usually for combatant ships and aircraft. amphibious warfare ship
Bow, stern, port, starboard, fore and aft are nautical terms that convey an impersonal relative direction in the context of the moving frame of persons aboard a ship. The need for impersonal terms is most clearly seen in a rowing shell where the majority of the crew face aft ("backwards"), hence the oars to their right are actually on the port ...
Marks are shown on nautical charts, using symbols that indicate their colour, shape and light characteristic, and are usually identified by name or number. In a wider sense the phrase "sea mark" is often understood to include all types of landmarks, structures and devices that can be used to provide warning and guiding signs to mariners.
U.S. Coast Guard small boats have a number that is shown on both bows (i.e. port and starboard) in which the first two digits indicate the nominal length of the boat in feet. For example, Coast Guard 47021 refers to the 21st in the series of 47-foot motor lifeboats.
Centerline (nautical), the dividing line between port and starboard sides of a ship or boat; Centreline, ... ℄, an engineering drawing symbol for centerline