What is the type of ship whose variation of trim will great during listing（heeling）？

[xichyu]

What is the type of ship whose variation of trim will great during listing（heeling）？

 

[gonzo]

Do you mean what kind of shape will make the trim change as the list increases?

 

[xichyu]

Do you mean what kind of shape will make the trim change as the list increases?

Thanks!
My English is poor

 

[gonzo]

Only a shape that is symmetrical will not change the trim as the list increases. If there is a difference in shape between the aft and fore ends, the submerged volume will be different as the list changes (measured from the original center)

 

[philSweet]

Look up metacentric shelf method. It is a design method, or a design evaluation method, which quantifies the trimming moment due to heel.

 

[TANSL]

You should specify which metacenter you're talking about. But in any case the trimming moment does not depend on the metacenter situation.
Sorry if my English is not very correct. I prefer to have clear concepts though I can not express myself very well.

 

[xichyu]

Look up metacentric shelf method. It is a design method, or a design evaluation method, which quantifies the trimming moment due to heel.

Thanks

 

[xichyu]

Only a shape that is symmetrical will not change the trim as the list increases. If there is a difference in shape between the aft and fore ends, the submerged volume will be different as the list changes (measured from the original center)

How many kinds of that ship？

 

[xichyu]

You should specify which metacenter you're talking about. But in any case the trimming moment does not depend on the metacenter situation.
Sorry if my English is not very correct. I prefer to have clear concepts though I can not express myself very well.

I want to know the types of that ship

 

[TANSL]

xichyu, I'm not talking about any specific type of ship. That's valid for any floating object.

 

[Heimfried]

[...] That's valid for any floating object.

But to deal with "heel" and "trim" there must be a certain similarity to a ship hull (co-ordinate directions, espacially a logitudinal direction must be given, which a floating lump hasn't). Otherwise you can't decide, what is "upright", what ist "transverse" and so on.

 

[TANSL]

You are quite right. What a thought so deep!. Technically it is impeccable.

 

[gonzo]

Designating xyz axes is required to be able to solve the problem. For a vessel, those are agreed as length, beam and depth.

 

[TANSL]

What is for you the coordinates origin ?. That is also important. To you, we all know how much you like precision, that should be as important as what the axes are.

 

[gonzo]

If we use angles it doesn't matter. For distances, they are relative, so it it possible to use the point designated by the designer as (0,0,0)