This book describes the system of indexes, developed by the IMEMO for evaluation of the overall maritime potential of a country. The Index of Maritime Might (IMM) is atop this system. This research includes the rankings of the top-100 countries according to their involvement in the maritime domain. The countries are compared by their ability to conduct a variety of maritime activities, either military or economical, which were calculated on the basis of statistical data as of the 1st of January 2021. This edition contains an updated version (2.0) of the indexes.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of the IMEMO.

The terms country, power and nation as used in this book do not imply any judgment of the authors or the IMEMO concerning the legal status of any territory or the endorsement or acceptance of particular boundaries. The terms are used for research purposes only as maritime statistical data for a range of geographically self-contained economic areas are maintained on a separate and independent basis.