Zero emission marine propulsion systems including hydrogen and battery energy and control systems exclusively for commercial operators. Our products are sustainable by design.

Inboard System
ÅRKA Outboard Range
Ecomar Propulsion KAIROS inboard systems range from 80kW to 1MW.

Ecomar Propulsion inboards are aimed at efficiency and range extension.

KAIROS inboards are designed as part of an integrated system which includes batteries (and hydrogen if required).
Our inboards are exclusively fitted by shipbuilders and volume boat builders.
We have special product focused on the CTV and offshore windfarm support sectors.
Integrated design consultancy for coastal and inshore vessels.

We offer a range of batteries which are suited to specific use cases and can advise customers on the most appropriate choices.
Our hydrogen systems include fuel cells, tanks and pipework which respond to survey and duty cycle imperatives.

For customers wishing to enquire about inboards please contact Ecomar directly.

  • New build inboard
  • High torque
  • Lower RPM extending engine life
  • Maximises efficiency of large propellors
  • Low energy use
  • Efficient control management systems maximising battery life
  • Remote monitoring solutions
  • Choice of battery sizes and types from 43kWh to 1MWh
  • Optional hydrogen integration
  • Lease finance option available on specific battery packs

Shipping to distributors in 2023

Inboard 1 Inboard 2
The ÅRKA outboard range will go into production in 2023.

With powerbands ranging from 80kW to 200kW the ÅRKA outboards are designed exclusively for commercial operation.

ÅRKA engines have a number of patented features and provide a unique, modular capability. ÅRKA outboards are designed to make replacement and repair incredibly efficient and cost effective.

    • Service intervals 1000 hours or annual.
    • Modular construction enables exchange of powerheads or bottom sections within one hour using only hand tools.
    • 90% recyclability
    • Full environmental audit provided

    Incorporates practical features such as:

    • Flat top sides with fiddles for added useable space
    • Optional transom lighting
    • Remote monitoring

    We work with several major international ship owners, ship
    builders and operators. The company is solely focused on
    design and manufacture of products for commercial clients
    and welcomes approaches from distributors, volume boat
    builders and commercial operators or shipyards.


Our zero emission outboards are some of the most efficient and powerful electric green machines on the market.

Consultancy 1 Consultancy 2
Consultancy Service

Making the transition from diesel to clean energy is becoming more urgent by the day.
We can help vessel and fleet owners ensure that their choices will provide long term value and a reliable service.

Our consultancy service looks at the whole vessel from throttle to propeller and provides detailed analysis to suit individual needs. We work alongside naval architects, builders, owners and operators to provide zero emissions solutions. Our team are experts in marine engineering and new technologies, and we can help make the right choices from the start and save time and money.

Our electric and hybrid marine products are:
shield Strong & Robust
shield High Performance
shield Maximum Range
shield Sustainable
Eugene Bari

“Our control system gives the skipper exactly what they need, which is full control of the vessel. Our engineering makes the propulsion as efficient as it possibly can be and that provides certainty. In fact, if you think about range as an example, knowing exactly how much charge you have is far more accurate than a traditional fuel gauge. With our kit you know exactly how much power you have and how far it will take you.
The electronics and computerised controls respond in exactly the same way as people are used to. The motors respond immediately and handling a boat feels just like it would with an old fashioned diesel would but without any pollution or noise.

There are added benefits for fleet managers who can remotely monitor the systems and make sure everything is going as planned. With our remote linkages to Ecomar we also have the added ability to let our customers know if something is likely to go wrong or if someone is abusing the system. It’s like having three sets of eyes in the engine room without any of the cost.”

Eugene Bari
Managing Director, Ecomar Propulsion

Case Study

This vessels inboard engine conversion would save over 2000 tonnes of fuel and a minimum of 40 tonnes of GHGs per annum.

Read case study
For more information, contact us