If we import any Capital goods which are Brand new by ocean, How do we define how much duty will be levied? In whichever country we import?

Some countries provide benefits such as duty exemption for imported goods used as a component in manufacturing new product.  But most countries having that policy provides this benefit only if importing company is a locally owned manufacturer.In any case, duties depends on your local import policy.  Some will charge only5% from Ex-W value and Ive seen cases where they charge more than% CIF value.

If by Duty you mean Custom duty and taxes then you should go to your country's import policy. There is another short way you can check H. S Code for that Capital Good and check duties in chapter of H. S Codes.

Regulations differ in each country.

In Qatar it is calculated on CIF Value of the cargo.

ACCORDING TO WEIGHT ANS CBM