Retrofit Solutions For BTWS

Ballast Water Treatment System Retrofits

Properly planning the installation of a ballast water treatment system is as important to ensuring compliance and a low total cost of ownership as the choice of the system itself. Choosing a supplier who has extensive experience with both new builds and retrofit projects can pave the way for a smooth and successful installation.

Installing a ballast water treatment system on an existing vessel is typically more complicated than on a new build. Ballast water treatment was not considered during the original construction of most vessels, and as a result, there is no dedicated space for the new system. This means that the installation needs to be adapted to existing circumstances on board.

High flexibility, thorough preparation and strong cooperation from all partners are all necessary for a successful retrofit installation. Installing a ballast water treatment system affects many on board systems, each of which has its own specific considerations. The typical dockyard timeframe for a retrofit is two weeks, and any delay means lost income for the vessel owner.

A retrofit is not simply the installation of new equip­ment, but the addition of a complete system that will demand a new way of managing ballast water. It therefore requires updates to the Ballast Water Record Book, as well as the Ballast Water Management Plan. Moreover, the implementation of new procedures will likely entail training for the crew.


Leading Company In Marine & Offshore With World's Best Technology For Customer Satisfaction

Hanla IMS is a South Korean-based specialist manufacturer and supplier of marine technology solutions. Hanla NMT, an affiliate of the company, manufactures sensors and ballast water treatment systems.

Over the last 27 years Hanla NMT has established a strong reputation for environmental responsibility both in its own operations and in the solutions it provides to its customers.

Problems Solved

  • Seeking to reduce time and costs of BWTS retrofits
  • Improve quality outcomes
  • Enhance job satisfaction for design team
  • Desire for integration between drawing/ modelling and conversion from scanned data to 3D data


  • 30% savings in time at the project planning and design phase
  • Manage increased demand from a large customer basea
  • More efficient retrofit allows team to address high customer volumes
  • Readiness of retrofit vessels ensured with SOx SCRUBBER (EGCS)
  • Streamlined process from point cloud data to 3D modelling
  • Minimised duplication through integrating design stages
  • Easy adoption (no specialised computer hardware required)



HANLA IMS is a global company manufacturing the best products based on reliability with customer satisfaction as its top priority. These brochures contain promotional articles.