That is the only thing I had said so far, which is applicable for boats between 9 and 80 m. You said that it was not a method applicable to smaller ships and that is not correct. As you can see, except that it not only works for big ships but also for not so big ones, I agree with what Ad Hoc says about limits. As I see that you do not know them, I am attaching a table with them. I have used the Holtrop-Mennen method in many projects and I am perfectly aware of its limits. I have tried this spreadsheet but don't think it works well for this case.Ĭlick to expand.I don't know if I would use Holtrop " here" because I don't have enough data on your ship. That's why at least from the distance the Orca3d CFD package looks the most user friendly option for people wanting the simplest workflow (input = hullshape and load conditions, output = hull resistance or power vs. I am not planning to become a CFD expert and I don't want to go into the mighty details of CFD. That is why I want to use CFD, and if possible more than one software to cross check. So, my friend TANSL is happy to use Holtrop here but in your opinion Holtrop doesn't apply for this boat and NPL should give better results? You won't like my next question but do you know if there is a spreadsheet already available for the NPL method ? I will need like a week to digest all that info though. I found a direct download link to the pdf here: Click to expand.Thank you Ad Hoc for the Bailey NPL series, I wasn't aware of it.
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