Cardinal mark — A cardinal mark is a sea mark (a buoy or other floating or fixed structure) used in maritime pilotage to indicate the position of a hazard and the direction of safe water. Cardinal marks indicate the direction of safety as a cardinal (compass)… … Wikipedia
Mark Ella — Full name Mark Gordon Ella Date of birth 5 June 1959 (1959 06 05) (age 52) Place of birth La Perouse, New South Wales, Australia Nickname elzz School Matraville High Schoo … Wikipedia
Mark David Chapman — NYPD mugshot of Chapman on December 9, 1980 Born May 10, 1955 (1955 05 10) (age 56) Fort Worth, Texas, US … Wikipedia
Lateral mark — A lateral buoy, lateral post or lateral mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the edge of a channel.Each mark indicates the edge of the safe water channel… … Wikipedia
Safe water mark — A Safe Water Mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the end of a channel implying that open, deep and safe water lies ahead. The marker is also sometimes… … Wikipedia
Special mark — A Special Mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the boundary of an administrative area such as a speed limit, water skiing or mooring area.It is… … Wikipedia
Day beacon — This channel is designated by day beacons, though beacons 6 and 9 are omitted. Simple, unnumbered piles are used instead of them. A day beacon is an unlighted nautical sea mark. Typically, day beacons mark channels whose key points are marked by… … Wikipedia
International Association of Lighthouse Authorities — The International Association of Marine Aids to Navigation and Lighthouse Authorities (or IALA for short) is a non profit organization founded in 1957 to collect and provide nautical expertise and advice. Background The International Association… … Wikipedia
lighthouse — /luyt hows /, n., pl. lighthouses / how ziz/. 1. a tower or other structure displaying or flashing a very bright light for the guidance of ships in avoiding dangerous areas, in following certain routes, etc. 2. either of two cylindrical metal… … Universalium
international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… … Universalium