GMDSS Handbook

G^M^D^S^S Handbook Handbook on the Global Maritime Distress and Safety System 3rd Edition, 2001 This Handbook is not to be considered as a replacement or substitute for the ITU ‘‘Manual for Use by the Maritime Mobile and Maritime Mobile-Satellite Services’’ or any other publication required to be carried on board a ship by the Radio Regulations or any other international convention. B IMO London, 2001 First published in 1992 by the INTERNATIONAL MARITIME ORGANIZATION 4 Albert Embankment, London SE1 7SR Printed by the International Maritime Organization, London Second edition 1995 Third edition 2001 2 4 6 8 10 9 7 5 3 1 ISBN 92-801-5098-7 Sales number: IMO-970E Copyright # IMO 2001 All rights reserved. No part of this publication may, for sales purposes, be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, magnetic tape, mechanical, photocopying or otherwise, without prior permission in writing from the International Maritime Organization NOTE: ITU materials included in this publication have been reproduced, with the prior authorization of the publishers, from the following ITU publications: ITU-R Recommenda-tions, 1997 M Series, Volumes 3, 4 and 5; Radio Regulations (Edition of 1998); and Final Acts of WARC–Mob–83, WARC–Mob–87, WRC–95, WRC–97 and WRC–2000. These publications can be ordered directly from the International Telecommunication Union, Sales and Marketing Service, Place des Nations, CH–1211 Geneva 20, Switzerland. Photos in this publication were kindly made available by the International Mobile Sa-tellite Organization, COSPAS–SARSAT, the International Radio-Maritime Committee, and the Japan Maritime Safety Agency. Foreword Since its establishment in 1959, the International Maritime Organization and its Member Governments, in close co-operation with the International Telecommunication Union (ITU) and with other international organiza-tions, notably the World Meteorological Organization (WMO), the International Hydrographic Organization (IHO) and the International Mobile Satellite Organization (Inmarsat), and with the COSPAS–SARSAT partners, have striven to improve maritime distress and safety radiocommunications. The culmination of this work was the entry into force and implementation of the global maritime distress and safety system (GMDSS) in February 1999. The intent of this Handbook is to provide in a single comprehensive publication an explanation of the principles upon which the GMDSS is based, the radiocommunication requirements and recommendations for its im-plementation, the operational performance standards and technical specifications to be met by GMDSS equip-ment, and the procedures for and method of operation of the various radio services which form the GMDSS and the Master Plan for the GMDSS. Regulations cited in the text are taken from the 1988 (GMDSS) amendments to the International Convention for the Safety of Life at Sea, 1974, as amended. Note Every effort has been made to ensure that the material in this publication is accurate and up to date, but a certain degree of obsolescence is inevitable. Most of the texts in this publication are up to date as of July 2000, but in case of doubt or uncertainty about the material, readers should contact their national maritime Administrations or the International Maritime Organization for guidance. GMDSS Handbook Page v Contents Page Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Part 1 – Introduction 1.1 History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 The old system and the need for improvement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Part 2 – Basic concept of the GMDSS 2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Communications functions in the GMDSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Alerting SAR co-ordinating communications On-scene communications Locating Promulgation of maritime safety information General radiocommunications Bridge-to-bridge communications Part 3 – Communications systems in the GMDSS 3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Satellite communications Terrestrial communications Frequencies used in the GMDSS 3.2 Inmarsat system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Introduction Space segment Coast earth stations Ship earth stations Inmarsat services 3.3 COSPAS–SARSAT system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Introduction General concept of the system Coverage modes 121.5 MHz satellite EPIRBs 406 MHz satellite EPIRBs Space segment Local user terminals and mission control centres System performance and operations >>> ... - tailieumienphi.vn