**5. Conclusions**

In this study, an OWC wave power converting system based on a caisson breakwater was proposed and analyzed for both the structural safety and the performance in the power converting efficiency. For the structural safety analysis, two parts of analysis were carried out, namely, the first part for the overall structural safety and the second part particularly for the structure of air chamber of the OWC converter. The analysis on the chamber included both the elastic structural analysis and the air pressure in the chamber built in the caisson breakwater.


**Author Contributions:** Conceptualization, H.H.L.; Methodology, H.H.L.; Software, C.-Y.L. and T.-Y.W.; validation, H.H.L.; Writing—original draft preparation, H.H.L.; Writing—review and editing, H.H.L.; Supervision, H.H.L. and Y.-F.C.; Project administration, H.H.L. and Y.-F.C.; Funding acquisition, H.H.L. and Y.-F.C.; All authors have read and agreed to the published version of the manuscript.

**Acknowledgments:** This research was financially supported in part by the Ministry of Transportation and Communication (MOTC), Taiwan, under grants "MOTC IOT-103-H2DB005c". It is gratefully appreciated.

**Conflicts of Interest:** The authors declare no conflict of interest.
