# delftship help for a noob - accurtly set deadrise angle?

Discussion in 'Software' started by Steve32, Feb 5, 2010.

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### Steve32Junior Member

Can you accurtly set deadrise angle?

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### yipsterdesigner

good question, so far my best solution is to use rotate stern lines in degree's, its also possible to check deadrise with 3d acrobat tools, i started with a geo triangle tho and like to hear better way's

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### Steve32Junior Member

i thought of a protractor in the background but there has to be a better way

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### yipsterdesigner

Steve thats not bad, not bad it al, thanks, and why didnt this noob think of that

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### Steve32Junior Member

got to be an easier way though here ya go!

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### lewisboatsObsessed Member

I would think that an Excel guru could come up with a spread sheet calculator for it. All you really need is the Y and Z coords for the bottom and chine or chine area control curve point plus the centerline coord to give a 90 deg angle then calc the angle from bottom to chine-ish. Trouble is I forget the formulas to do it.

7. ### Guest625101138Previous Member

You could rotate the whole hull about the longitudinal axis by the deadrise angle. Then set the height of control points to the same value. Might seem drastic but it is only a few dots on a screen.

Rick W

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### Martijn_vEMarine software developer

Z= Zcenterline+Y*sin(15) or whatever the deadrise angle is.

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