The first volume contains the eight Technical Committee reports presented and discussed at the 20th International Ship and Offshore Structures Congress (ISSC 2018) in Liege (Belgium) and Amsterdam (The Netherlands), 9–14 September 2018, and the second volume contains the reports of the eight Specialist Committees. The Official discusser's reports, all floor discussions together with the replies by the committees, will be published after the Congress in electronic form.

The Standing Committee of the 20th International Ship and Offshore Structures Congress comprises:

Chairman: Mirek Kaminski, The Netherlands

Co-chairman: Philippe Rigo, Belgium

Segen Estefen, Brazil

Neil Pegg, Canada

Yingqiu Chen, China

Jean-Yves Pradillon, France

Patrick Kaeding, Germany

Manolis Samuelides, Greece

Stefano Ferraris, Italy

Masahiko Fujikubo, Japan

Rune Torhaug, Norway

Carlos Guedes Soares, Portugal

Yoo Sang Choo, Singapore

Jeom Kee Paik, South Korea

Ajit Shenoi, UK

Xiaozhi Wang, USA

On behalf of the Standing Committee, we would like to thank the sponsors of ISSC 2018.

Mirek Kaminski, Chairman

Philippe Rigo, Co-chairman

Delft, 1st May 2018