Both the safety of shipping & the cleanliness of oceans are promoted in many ways, one of which is the continuing development of routeing measures to control the navigation of vessels & to monitor their progress. The measures that are described or defined in parts A & H of this publication are individually described in parts B (traffic separation schemes & inshore traffic zones), C (deepwater routes), D (areas to be avoided), E (other routeing measures, such as recommended tracks, two-way routes & recommended directions of traffic flow), F (the rules & recommendations on navigation that are associated with particular traffic areas & straits), G (mandatory ship reporting systems, mandatory routeing systems & mandatory no anchoring areas) & H (archipelagic sea lanes). This edition incorporates routeing measures that have been adopted before July 2015.