"CompactClean has delivered the best performance among the three BWMS in our fleets"
OljOla Shipping has installed three different ballast water treatment systems across its fleet. One of them is DESMI’s CompactClean. With more than three years of operational experience, Ola Nilsson, Senior Advisor and Owner, explains why CompactClean stands out in day to day operation.
Operational reality at OljOla Shipping
At OljOla Shipping, ballast operations are part of the daily routine. The vessels ballast in and out several times per day, which creates demanding conditions for ballast water treatment equipment on board. When a system is used this frequently, consistent day to day performance becomes essential.
With three different ballast water treatment systems installed, there is a practical basis for comparing how they perform in real operations, beyond specifications and commissioning tests.
Experience with CompactClean in day to day operation
DESMI’s CompactClean is one of the systems in operation in the fleet. For Ola Nilsson, day to day performance is the real measure of value when equipment is used continuously as part of normal operations. Based on the fleet’s experience, he says that “our CompactClean system has the best performance out of the three systems.” He adds that reliability is a key reason for that conclusion, noting that they “have never had any break downs during operation.”
Another important indicator for OljOla Shipping is long-term durability of the UV components. Ola Nilsson emphasizes that the UV lamps installed during commissioning are still in operation, which he considers particularly significant given that the system runs 24/7/365 due to the fleet’s intense ballast operations.


Why the fleet owner recommends DESMI
From a fleet owner perspective, the reasons are straightforward. OljOla Shipping appreciates solutions that work reliably in practice and stay predictable over time.
Ola Nilsson sums it up like this:
- No operational failures
- Low maintenance cost
- Real good support
On that basis, OljOla Shipping warmly recommends the use of DESMI’s ballast water treatment systems.