**5. Conclusions**

From the results described above conclusions can be drawn on the corrosion behaviour of R4 steel in seawater:


**Author Contributions:** Conceptualization, X.Z. and G.F.; methodology, X.Z., N.N.-H. and G.F.; validation, X.Z. and N.N.-H.; formal analysis, X.Z. and N.N.-H.; investigation, X.Z. and N.N.-H.; resources, M.H.; data curation, X.Z.; writing—original draft preparation, X.Z. and G.F.; writing— review and editing, X.Z., N.N.-H. and M.H.; project administration, M.H.; funding acquisition, G.F. and M.H. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was co-funded by TKI Maritiem gran<sup>t</sup> number TKIM-2014-47, Localized Mooring Chain Corrosion (LMCC). The partners are Bluewater, SBM, Bumi Armada, SOFEC, Asian Star, Franklin, Boskalis, Corrosion, TNO, ABS and DNV.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The authors acknowledge the project partners for the financial support, materials supply and fruitful discussions.

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