1. Acknowledgement to reviewers of maritime technology and research in 2021

2. Fundamental issues in japan’s coastal management system for the prevention of beach erosion
Takaaki Uda

3. Discussing cybersecurity in maritime transportation
Antoni Bielawski, Agnieszka Lazarowska

4. The impact of the covid-19 pandemic on mental health among marine engineering students in region vi, philippines
Peter Ralph B. Galicia

5. Ports, maritime transport, and industry the immediate impact of covid-19 and the way forward
Anas S. Alamoush, Fabio Ballini, Aykut I. Olcer

6. Shipping patterns may be altered according to available refining capacities
Badri Toppur

7. Cryogenic treatment of tool steels a brief review and a case report
Thee Chowwanonthapunya, Chaiyawat Peeratatsuwan, Manote Rithinyo