The Global Maritime Distress and Safety System (GMDSS) provides a fast and efficient way of calling for assistance at sea, whatever the size of craft or its geographical position. Since it was first published, this book has helped explain the system for anyone using GMDSS and has been excellent pre-course reading for students. Denise Brehaut explains the operation of the system as a whole and the procedures involved, as well as covering the syllabi of the General Operator's Certificate (GOC), the Long Range Certificate (LRC) and the Restricted Operator's Certificate (ROC). It incorporates all the changes to GMDSS regulations that came into force in 2009. Now brought fully up to date for its 5th edition, GMDSS: A User's Handbook has proved an invaluable reference for exam candidates and equipment users alike for more than a decade. The clear and lucid text is supported with illustrations, handy Q&A sections and a quick-reference revision guide for GOC and LRC students.