The scrubber is a hybrid scrubber and can operate in both open and closed loop.
Closed loop to be used while in port and during maneuvering re-circulating the
water already within the scrubber.
When at sea, switching to open loop again.
There is no need for water treatment in open loop since the natural alkalinity
of seawater neutralizes the acid. Wash water is continuously monitored at the
inlet and the outlet to make sure it is in line with the criteria of MEPC 184 before
it is discharged into the sea with no harm to the environment.