Review Reports

Round 1

Reviewer 1 Report

Present work shows a different approach in the ship hull geometry optimization with respect to Ctm. Although the method does deterministic optimization in a turbulent fluid flow modelled by RANS, the results show trends in the shape optimization. Due to the nature of the optimization strategy, it allows for a nice parallel speed up in the simulation process.

The overall optimization procedure shows obvious improvement in time scale, with all necessary checks of important strategy ingredients: grid size, gradient calculations using finite difference, 2DOF approximations, ...

I would recommend it to be published in the present form. Only the English language should be checked again. 

Author Response

We are thankful to the reviewer for the positive comments. We have checked the grammar and phrase again and made necessary amendments. In line with the suggestion of the other reviewer, a few literatures have been added to the reference. Please see the revised manuscript.

Author Response File: Author Response.docx

Reviewer 2 Report

Please see the attachment file

Comments for author File: Comments.docx

Author Response

We are thankful to the reviewer for the constructive comments. In preparing for the revised manuscript, we have attempted to incorporate faithfully the suggestions of reviewer. The above literatures have been added to reference No. 28 through No. 31. Please see the revised manuscript.

Author Response File: Author Response.docx