Translations This is not directed to Aqualung (this post just happens to come after his post), but to students that always request an English...
Latest Version Yes, the latest version of the spreadsheet is on post #128.
Method to work out resistance of hydrofoil boat Let e = Rt/displ where Rt is total resistance and displ is displacement Also, for the model,...
Effective Power Tangi, Effective power is defined as P[eff] = D x V. It is not the value of the engine power P[eng], but the amount of power...
Info Needed Tangi, what is the LCG of the boat? Also waterline length and beam? Otherwise post the spreadsheet to me at Dingo at Engineer dot com...
Corrected Spreadsheet Ricardo, thank you for that excellent catch. You should play cricket for Australia! I have attached a corrected spreadsheet...
Question? Sorry Ricardo, was there a question?
I have somewhere in my papers that the factor 1/2 was added to more closely resemble what actually happens. I could not find where I got this...
Translation Sorry everyone, but I will not be making a translation of the spreadsheet. It will take awhile and my custom with my programs is the...
Negative Thrust Angle Waterline is static waterline. It seems that using a negative value for the angle of thrust line is a no-no. I looked at...
Mat-C, A outboard or sterndrive can still have a angle of thrust, and added resistance due to the leg. In my opinion (note, this is my opinion,...
u4ea32, Sorry, but without macros it would be a tedious process to do. I would suggest running the spreadsheet on Windows, print out the macro...
XXL, Please give me your e-mail address?
Iso ISO 12215-5 and 12215-6 are the structural calculations required for submittal to MNZ (SGS or Survey Nelson etc.) or one of the Australian...
Nick F, you did not mention if this vessel is for recreational or commercial use, and if commercial, if it is for light or heavy duty. In...
Yellowjacket, From memory, Savitsky tested a few models and obtained parametric formulas for their performance. Any theory is only valid for the...
Critical Trim Angle Sercan, Savitsky, from memory, predicted the running trim angle, not the critical trim angle (note, from memory, but...
For Rxcomposite Regarding demi-hulls, there is a paper by Mustafa Insel of Turkey that addresses this subject. This is the paper that I was going...
Password Rahaman, what is your e-mail address? I will send you the password.
Password for Planing Sheet The reason that I lock the spreadsheet is so that no one can tamper with it and re-post it, or submit it as homework...