This book presents the proceedings of the 12th International Symposium High Speed Marine Vehicles held on 15 and 16 October 2020, for the first time as an e-conference.

High Speed Marine Vehicles Conference has almost 30-year history since the first Conference held in Naples in 1991. Since then, it has been an opportunity to present and discuss developments in the design, construction and operation of high speed marine vessels.

The Symposium is addressed to individuals from universities, research organizations, industry, government agencies, certifying authorities as well as designers, operators and owners who contribute to improved knowledge about “High Speed Vessel”.

For this edition, more than 40 abstracts have been submitted and, after a review process, 26 papers have been included in this book. Amongst the topics covered in this year’s event are updated aspects and developments concerning the ship design, numerical and experimental hydrodynamics, seakeeping and manoeuvring, marine structures and machinery.

Thanks are due to the Scientific Committee who shouldered most of the responsibility for reviewing papers and providing constructive comments to improve their quality.

My personal and special thanks to Professor Antonio Fiorentino, founder and Chairman of HSMV, for sharing his invaluable knowledge and experience.

Ermina Begovic