CP AND LCB AND ACTUAL SUBMERGED BODY

[dssdaad]

Hello,
When I select the actual submerged body for hydrostatic calculations I never set the Cp value 0.56 and LCB %-3.5 . Many times I tried it but unfortunately Cp is 0.61 and LCB is %-4. Is there any oppinion to reduce the Cp or any strategy to control these parameters?
Thanks A Lot

[MICHAEL KERR]

Hi,
go to Transform–>Hull Transformation, unclick everything that you don’t want transformed then enter your Cp and remember to press enter after. . LCB you have to do that manually.

[dssdaad]

Thanks for the answer but I think in free version there is no click/unclick option.

[MICHAEL KERR]

OK, I hav’nt got the free version to compare to the pro, but the clicking and unclicking is done in the bottom pane to the left in the Hull Transformation Window, it shows a simple list just like the layer properties list, remember your only apply the Cp to the canoe body so if there is no list unclick everything except the canoe body (hull) in the Layer Properties window, where it says Hydrostatics. Then in the Hull Transformation Window, type in your Cp, press enter, then click Transform.

[Marven]

Thanks for the answer but I think in free version there is no click/unclick option.

Yes there is. There’s no difference between the pro and free version.

[dssdaad]

But there is a window at bottom left corner and it just include ‘layers’. There is not any checkbox.

[Marven]

How many layers do you have that have geometry assigned to it?

[dssdaad]

I have only one layer. I am just trying to model the hull.

[dssdaad]

I also did not understand the calculation, based on actual submerged body. Because Cp is Displacement/(Amax*Lwl)

[Marven]

In fact C_P is Displ/(L*A_M) where L can either be L_PP or L_WL The former is used for large ships, the latter for boats and yachts.

See also the attached image showing the layer(s) in the transformation window.

[Author]

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