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


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 […]

30 Jan 2019

Optimarin says early order surge should make 2019 ‘best year ever’

Posted in Press release
Optimarin says early order surge should make 2019 ‘best year ever’

In the quarter of a century since its formation in 1994, ballast water treatment (BWT) specialist Optimarin has never experienced a year quite like 2018. The Norwegian headquartered firm has today revealed that the previous 12 months saw it sell more than 100 systems and achieve record revenues. However, according to company CEO Tore Andersen, […]


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