Optimarin offers state of the art Ballast Water Treatment System – compliant with both IMO and USCG regulations.

24 years of experience using filter and UV to treat ballast water in a way that is friendly for the environment.

Simple, effective, reliable

Optimarin ballast water treatment system combines simplicity with innovation. We utilize a combination of automatic back flushing, self-cleaning filters and powerful UV irradiation to neutralize all potentially invasive species in the water.

With a modular nature, the system is flexible and easy to install on any vessel (newbuild and retrofit). Even those with the most restrictive space demands. Our solution does not use nor generate chemicals in its process. Most importantly: It is simple to operate and maintain.

Whatever your vessel, whatever your operations, whatever your individual requirements – Optimarin has the experience and technology your business demands.

Dedicated to Ballast Water Treatment, dedicated to you

No one knows ballast water like Optimarin. We were the first ever company to install a commercial ballast water treatment system, in 2000 on-board the Princess Regal, and have been refining our technology ever since.
We are committed to supplying systems that protect both the environment and the commercial interests of our customers. We know this industry and we understand your needs.


Are you ready to take the next step towards an Optimarin ballast water system?
We would love to provide more information or a quote for your specific vessel.

Contact Optimarin


22 May 2019

Optimarin gears up for retrofit wave with expansion and new hires

Posted in Press release
Optimarin gears up for retrofit wave with expansion and new hires

Optimarin gears up for retrofit wave with expansion and new hires Ballast water treatment (BWT) specialist Optimarin is responding to a growing market and surge in demand by investing in the organization and strengthening its management team. The company, which expects to double its turnover this year, has employed Leiv Kallestad as new CEO, allowing […]

23 Apr 2019

SAFETY4SEA Interview with Birgir Nilsen, Optimarin

Posted in News
SAFETY4SEA Interview with Birgir Nilsen, Optimarin

SAFETY4SEA Interview with Birgir Nilsen, VP of Business Development, Optimarin at CMA Shipping 2019, 2-4 April, Stamford, Connecticut, USA. Discussing what to consider when choosing a ballast water treatment system and about the implementation challenges.

4 Mar 2019

Optimarin gains approval for reduced holding time from USCG

Posted in Press release
Optimarin gains approval for reduced holding time from USCG

Optimarin Ballast Systems (OBS) have gained approval from the United States Coast Guard (USCG) slashing their required holding time from 72 to just 24 hours for all salinities. The certification ensures the systems are optimized for short sea shipping routes in the US, as the time between ballast water treatment (BWT) and de-ballasting is cut […]


Words from our customers

  • Saga Shipholding

    “Optimarin’s flexible and modular construction means efficient use of space and power, and easy integration with ship systems. This gave us the confidence we needed, and we have chosen Optimarin for each and every ship.”

    Eivind Holte, Senior Technical Manager

    - Saga Shipholding
  • Vard Brevik

    “Our experience is that Optimarin Ballast System is well engineered product of good quality. It is simple and relatively compact. The system was ordered and delivered as loose components what makes the installation easier, in particular on smaller vessels where limited free space is available.”

    Lech Wykretowicz, Discipline Coordinator –  Machinery & Piping

    - Vard Brevik