A unique mix of expertise at your service!

Already in 2008, MossHydro saw a potential need for better filter solutions in the cleaning of ballast water and it was clear that shipboard constraints and the characteristics of ballast water called for innovative solutions.

From 2005 to 2008, MossHydro traveled around the world with our team educating shipowners and yards about the Ballast Water Management Convention and the impact this would have for owners and yards in the years ahead. This activity helped Moss Hydro to build up a brand based on quality and reliability.

During this early phase of development, MossHydro never looked at its own group as component experts, but rather as a team of specialists putting common sense and technology together.

The strategy was to use off-the-shelf filter solutions from the leading filter manufacturers.

Unfortunately, over time, it became clear that Ballast Water Treatment presented new challenges, which the existing filter solutions could not solve.

With the unique experience gained over the years, MossHydro is now well established in the water filtration market. MossHydro is committed to meeting the challenges of all water filtration needs, being Aquaculture, RO, UF, NF, Drinking water, Industrial, Energy, and Marine / Ballast Water Management.


MossHydro has in-depth skills in naval architecture, engineering, vessel operation and maintenance, Ballast Water Treatment as well as filtration in all areas of operation.

This broad competence results in competitive edge. Regulatory deadlines are looming. Flexibility is vital.


In the marine industry, and also other industries, there is a range of challenges:

  • Limited space on installation site, causing requirements for: ...design changes for new builds ...reconstruction and potential structural changes on installation sites
  • Project-specific tailoring - such as flange positioning and explosion-proof electrics
  • Communication with interface system
  • Low water pump discharge pressure
  • Reliable self-cleaning performance

MossHydro has later developed to become a reliable supplier of products for applications with hash working conditions.

A major supplier to the Aquaculture industry where the products are seen as the most reliable in the market.

MossHydro is also known to be supplying products to other applications, where a high level of flow and filtration is a must, with steady operation and minimal downtime.

Here you can read more about our expertise as we present some of our team:

Kristian Holmen, CEO

Kristian Holmen comes from a career within electromechanical industry and automation where he has worked with product- and business development. He holds a M. Sc. in Process Engineering (1990) and Technology Management (2005).

Kåre Johansen, Advisor

Kåre Johansen has forty years’ experience in the marine industry holding various positions. He started his career at Bergens Mekaniske Verksteder. Then he went to Kvaerner Ships Equipment as sales engineer working globally. During this period he was stationed for a period in Japan. Kåre worked for Ocean Saver as COO. Before Kåre came to OceanSaver he was managing director for the last 17 years in Allweiler AS which is a part of US group Colfax Inc.

Aage Bjørn Andersen, Advisor

Mr Andersen holds an MSc in Naval Architecture. He has more than 25 years’ experience from leading R&D roles with major players from the oil & gas sector and from shipping. He is a founder and entrepreneur who has been engaged in the area of Ballast Water Management since 1996. Mr Andersen was a representative of the Norwegian Delegation to IMO and had an active role in the development of the International BWM Convention, including its Guidelines.

Here you can read more about our expertise as we present our board of directors:

Leif Rune RinnanChair of the Board

Leif Rune Rinnan has thirty years’ experience in international industry management, business development, finance and venture capital. He founded both Telenor Venture the venture capital arm of Telenor through Televenture and Norsk Innovasjonskapital a leading VC in early stage development. Rune has experience as board member and chairman in companies in different business sectors e.g Eltek, Tandberg, Opplysningen 1881 and ABB Oil&Gas companies.

Roy André MagnussenBoard member

Operations Director & QA-HSE Manager – OSO Hotwater Group AS.

Roy A. Magnussen has fifteen years experience in production technology development, process assurance and improvement. As an Operations Director – QA Manager and Lean Six Sigma Master Black Belt he is currently operating OSO Hotwater Groups production sites of total 25 000 m2 in Norway and Sweden. He is covering all operations from the development and deployment of strategies and goal alignment, to the development of advanced production technology and massproduction of high quality pressure vessels and steel products. Roy also serves as a boardmember in OSO Hotwater Group AS and OSO Manufacturing AB.

Neil Kristian SamuelsenBoard member

Neil Kristian Samuelsen is an Investment Analyst for Lani Invest AS, a privately-held investment company owned by Lars Nilsen. Neil has a Master of Science degree in Financial Economics from BI Norwegian Business School and a Bachelor of Science in Business Administration from American University in Washington, DC, USA. Prior to joining Lani, Neil has worked as a Financial Analyst in DnB Markets, one of Norway’s leading investment banks, as well as Finance Director in Honeywell Life Safety AS, responsible for finance and accounting for the Honeywell’s Nordic Life Safety operations.