Grain heeling volumetric moment calculation

I get a job about grain loadcase calculatinting yesterday。It's a old bulkcarrier the resource in it's booklet is so poor,Bojean curve ,HYDdata ,Cross curve ,general plan body line ,capacity table and a stability calculation without gain.The problem is that you must finish it in 1hour ,i dorp it at last.(May be I can finish it after 1 day). If you calculate it by software ,you must input bodyline ,create tanks ....that spend so many time.

calculate it by hand...

Now i try to calculate grain heeling volumetric moment ,following is my model and question in pictures.

 

Morning ,
This is not something you should be attempting with hand calculations if it is to be provided as a new stability booklet or for prooving stability of teh vessel for a voyage.

Best use the software.
However, your calcuations are not 100% correct.
They are teh basic principle of a wall sided tank for free surface effects.
However most barges or hoppers are not true wall sided, and the depth of your grain will make a difference to whether or not the olg CofG of cargo shift is the same distance as shown in your diagram 3 i.e. g-g1
I believe this project should be provided to a company that can generate a hull form and tanks in less than 6 hours and complete stability report in less than a day.
This can be achieved from MBM and you should search a company that can do this for your future projects.
Thanks
Mark Bambury
Managing Director

 

Thank you !
The problem of this work is no much time.
When the ship arrive you start to cal and you should finish it before it leave.
The master only want to know weather his's ship carry this kind of gain is safe.
In that case cal by software is not a good idea .

 

I have a good idea ,if a software can open it's database may be i can make a adapter for inputing bojean table,hyd and cross curve .
All deadweight(without grain) can cal from old stability . This can be seen one and the other is grain .