In March 2026, ship operators report increased attention on Ballast Water Treatment Systems (BWTS) during inspections.
The BWTS framework, developed under the International Maritime Organization, requires systems to be installed and approved.
However, current inspection practice focuses more on how the system works in real operation.
What is changing in inspections
Inspectors are not only checking certificates.
More often, they review:
- If the system runs correctly during operation
- If alarms appear during ballast operations
- If filters and UV units work as expected
- If sensors give stable readings
This means that system condition is as important as system approval.
Common issues seen onboard
Operators report that BWTS issues are often linked to:
- Filter clogging or reduced performance
- UV unit efficiency drop
- Sensor instability or incorrect readings
- Alarm history during ballast operations
- Incomplete or unclear maintenance records
These issues may not stop operation, but they can lead to inspection remarks.
Why technical condition is important
BWTS operates during real ballast operations, not only during testing.
If the system is not stable:
- Ballast operations may be delayed
- Alarms may trigger during inspections
- Inspectors may request additional checks
Small technical issues can become visible during normal use.
What operators are checking in 2026
To prepare for inspections, technical teams focus on:
- Cleaning and checking filters
- Verifying UV unit performance
- Checking sensor accuracy
- Reviewing alarm history
- Updating maintenance and service records
These steps help ensure the system works correctly when used.
Why Nordast
Nordast supports BWTS operation in real conditions.
We assist with:
- BWTS inspection and maintenance
- Filter, pump, and valve service
- Sensor checks and calibration support
- Troubleshooting alarms and unstable operation
- Genuine/OEM spare parts supply
- Clear service reports for inspection records
Our focus is simple: systems that operate correctly during ballast operations.
