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IALA is primarily known for the IALA Maritime Buoyage Systems or sea mark systems that are used in the pilotage of vessels at sea: [3] Lateral marks indicate the edges of a channel. Cardinal marks indicate the direction of safe water at a dangerous spot. Safe water marks indicate the deep water and open end of a channel.
Previously there had been 30 different buoyage systems, before IALA rationalised the system. In 1980 on a conference convened by IALA, they agreed to adopt the rules of a new combined system, which combined the previous two systems (A and B) into one system, with two regions (A and B). [1] The IALA defines them as Region A and Region B:
IALA (2010), Maritime buoyage system and other aids to navigation (PDF), IALA (International association of maritime aids to navigation and lighthouse authorities) Noice, Alison (2013) [2007], Day skipper for sail & power (second ed.), Adlard Coles nautical (an imprint of Bloomsbury), ISBN 978-1-4081-9310-5
In IALA region A where a minor channel branches off to port the mark at the junction would be a red cylinder with a green band. The red cylinder is a port hand mark for the main channel, the green band indicates a starboard mark for the minor channel. [3] In IALA region B the colours (but not shapes) are reversed. [4]
The International Association of Lighthouse Authorities defines one system of marks specifying the shapes, colours and characteristic lights of buoys depending on their purpose, the IALA Maritime Buoyage System. [2] For historical reasons, there are two regions of lateral marks in use: IALA Region B in the Americas, the Philippines, South Korea ...
Trinity House played a major part in the design of the IALA Maritime Buoyage System, laying the first buoy off Dover, watched over by representatives of 16 nations on 15 April 1977. By the 1960s, Trinity House licensed about 500 pilots, of whom about 350 were in the London District, handling an estimated 60% of the nation's piloted tonnage.
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IALA. Archived from the original (PDF) on 2007-12-14. This page was last edited on 19 November 2023, at 00:59 (UTC). Text is available under the Creative ...