Is CAPEX and OPEX lower with a Bawat BWMS?

Yes, both OPEX and CAPEX are lower.

Due to the fact that instead of installing a system that reflects the size of ballast pumps, it is only required to install a system only needed to treat the amount of ballast water.

By looking at the amount of parts in a Bawat BWMS compared to other type of systems it is clear that OPEX will be reduced dramatically. Two plate heat exchangers, a pump, some sensors, and pipe are what is needed.