By Simon Jollands in Navigation , Preparation 1 comment. As recently as the s there were more than 30 buoyage systems in use around the world. There followed a worldwide effort to develop a safe, unified maritime buoyage system that could be followed by all vessels at sea. The IALA chose the two systems in order to keep the number of changes to existing systems to a minimum and to avoid major conflict. The difference between the two systems is the colour and light characteristics used for lateral marks, as follows:.
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Combined Cardinal and Lateral System Red to port in Region A and red to starboard in Region B Describes the Cardinal and Lateral Buoyage system with diagrams and written explanations of the five types of marks: lateral, cardinal, isolated danger, safe water and special marks.
Admiralty Chart Catalogue. Admiralty Publications.
IALA Buoyage System For Mariners – Different Types Of Marks
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International Association of Marine Aids to Navigation and Lighthouse Authorities
IALA provides nautical expertise and advice. IALA encourages its members to work together to harmonise aids to navigation worldwide and to ensure the movements of vessels are safe, expeditious and cost effective whilst simultaneously protecting the environment. One of the ways IALA achieves this is by establishing technical committees which bring together experts from more than Above: Sealite SLB Navigation Buoy, Manila, Philippines Lateral Marks Lateral marks define a channel and indicate the port and starboard sides of the navigation route to be followed into a waterway such as a harbour, river or estuary from seaward. The vessel should keep port marks to its left and keep starboard marks to its right. If lateral marks are unable to be represented by a can or cone shaped buoy they should carry the appropriate topmark. Sealite Buoys Sealite Marine buoys are manufactured on-site from rotationally-moulded, UV-stabilised polyethylene, and are designed to offer a low maintenance, high visibility solution to marine navigation.