Following the establishment of November 5, Japan's Tsunami Disaster Prevention Day, as "World Tsunami Awareness Day" at the United Nations General Assembly in December 2015, the Goryo HAMAGUCHI International Prize (Minister of Land, Infrastructure, Transport and Tourism Prize) was established in 2016 for those who have made outstanding achievements in the field of coastal disaster prevention technology, including tsunami disaster prevention. The award was presented on November 29, 2021 to two persons and one organization: Dr. Hideo MATSUTOMI (Professor Emeritus at Akita University and Visiting Professor at Chuo University's Research and Development Initiative); Dr. Gerassimos A. PAPADOPOULOS (Chairman, International Society for the Prevention and Mitigation of Natural Hazards (ISPMNH)); and the Pacific Tsunami Museum (Hawaii, USA).

PARI held a joint research workshop with Indonesia's Badan Pengkajian dan Penerapan Teknologi (BPPT; Agency for the Assessment and Application of Technology) in April 2021. In addition, PARI hosted and chaired a meeting of the International Society for Soil Mechanics and Geotechnical Engineering's Technical Committees in October 2021, which was attended by a total of 32 Committee members from 14 countries and saw active technical exchanges among researchers representing PARI and other overseas research institutes.

Following the establishment of November 5, Japan's Tsunami Disaster Prevention Day, as "World Tsunami Awareness Day" at the United Nations General Assembly in December 2015, the Goryo HAMAGUCHI International Prize (Minister of Land, Infrastructure, Transport and Tourism Prize) was established in 2016 for those who have made outstanding achievements in the field of coastal disaster prevention technology, including tsunami disaster prevention, and the award was presented on November 4, 2020 to two persons and one organization: Dr. Fumihiko IMAMURA, Director of the International Research Institute of Disaster Science, Tohoku University, and Professor of Tsunami Engineering; Professor Costas Synolakis, University of Southern California (Greece and USA); and the Aceh Tsunami Museum (Aceh Province, Republic of Indonesia).

At the PIANC (World Association for Waterborne Transport Infrastructure), PARI played an important role in promoting strategic international activities, such as setting up MarCom WG225 (Seismic Design of Port Structures) as its chairman and aiming for the 2022 revision of the "Guidelines for Seismic Design of Port Structures," and participating as a key member in MarCom WG208 (Automation of Container Terminals) and compiling the "Planning Methodology for Automated Container Terminals (published in March 2021)."
In addition, PARI gave a keynote speech at the International Workshop of the International Society of Geotechnical Engineering (ISSMGE) as the chairperson of the technical committee, and participated in the International Symposium on Automation and Robotics in Construction (ISARC2020) as the secretariat, and engaged in active technical exchanges with overseas research institutions.