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PART ONE

VISION

At Northern Offshore Services, we are fully committed to sustainability and performance, and we are leading the way in the industry by providing innovative Green Technology solutions.

Northern Offshore Services' Green Technology initiative will transform our company into a sustainable shipping company ready to meet the future and lead the way for a greener, more sustainable industry. We have two focus areas for the coming years.

Firstly, to develop and produce vessels with low environmental impact, still with high offshore availability, safety, and range. We set the standard with the unique, state of the art and future proof N-O-S CTV’s.

Our second focus area is to prepare and adapt our existing fleet for alternative energy sources. We are now developing, constructing, and converting vessels for higher performance and emission reduction equipment to lead the way and help make the industry become more sustainable.

Our advanced vessels are built for the future, delivering the best performance while upholding sustainability and safety standards to meet even the toughest challenges. With a focus on reliability and meeting our customers’ unique needs 365 days a year, we are dedicated to creating a more sustainable planet through our commitment to Green Technology. We set the standards. We are BEST365.

INNOVATIVE DESIGNS

Energizer

N-O-S’s fourth generation vessel design is a 40 meters crew transfer vessel that offers offshore accommodation for charter's personnel. The focus of the E-Class design is high offshore performance and reduced carbon footprints. Through a diesel-electric propulsion system together with batteries and an effective propulsion system, the vessel can run in direct diesel mode with PTO and peak shaving, diesel-electric mode, and purely on batteries in standby mode or during slow steaming operations. With the possibility to replace the diesel engines with electrical engines already in place, the E-Class is a vessel designed with the future in mind. The E-class design allows significant CO2 reductions with increased performance. The effective propeller design reduces CO2 by up to 50% during push-on compared to traditional CTVs. This 40-meter-long Crew Transfer Vessel built for the toughest challenges is a real power vessel expected to perform with 30 tons bollard push.
INNOVATIVE DESIGNS

The I-Class series

The next generation N-O-S design, the I-Class series, is our first fully electric prepared CTV. The 34-meter long I-Class, with its innovative hull and significantly improved crew and technician comfort, is a guiding star leading the industry into a more sustainable future. Read more about the vessels, Impresser and Improver, under The Fleet.

Offshore charging

What is the next step? To enable the highest offshore availability in Zero emission mode there is a need for offshore charging. The electrification of the shipping industry needs it. Northern Offshore Services research and development for different offshore charging options are ongoing.

Energy simulations

We want to provide our clients with reliable marine battery solutions. Our R&D department is currently working on a program to calculate battery capacity required for specific wind farm projects. This way, we can calculate the battery capacity needed to run a full day in the field by entering parameters such as distance, push-ons and transits. With this program clients can feel safe that we provide safe, reliable, and efficient service and solutions at sea.

ALTERNATIVE ENERGY

We believe in electrification. But until we are fully there, we need to explore and assess the alternatives to provide our clients with environmentally effective and reliable solutions. We focus on how to adapt our existing fleet to alternative fossil-free energy sources today. Whether it is methanol, green hydrogen, or HVO we evaluate all alternatives when it comes to environmental benefits and plan for upgrades of our entire fleet.

PART TWO

UPGRADES

The second focus area for N-O-S sustainable future is to take care of what we have and update our current fleet. We have a plan in place and we have already started.

Traveller

In 2020 one of our A-Class vessels – Assister – was rebuilt and upgraded. The vessel was extended from 19 meters to 25 meters, utilizing recycled aluminum. The vessel upgrade included a new driveline with 4 x Volvo Penta IPS system and the interior was refurnished with 12 additional seats, making former Assister, now Traveller to a 24 Pax CTV. The transformation from Assister to Traveller gave the vessel a whole new lifespan.

Manner and Matcher

Manner and Matcher underwent a major conversion during the spring of 2025, from L-Class to M-Class. To improve performance, meet market demands, and extend their operational lifespan. The vessels were lengthened to 27 meters, with the majority of the aluminum hull structure reused, an approach that is highly beneficial from a life cycle perspective. Passenger capacity is upgraded from 12 to 24. The vessels are now fully equipped to meet future operational demands.

UPGRADES / TRANSFORMATIONS

Northern Skagerrak

Northern Skagerrak is a 45 meters tanker vessel currently operating in Gothenburg-Skaw area between Denmark and Sweden. The vessel is scheduled for engines conversion from conventional diesel propulsion to diesel-electric propulsion. With diesel-electric propulsion, the vessel is able to use the electricity generated by the auxiliary engines to propel the vessel, and the other way around, it enables the main engines to generate electricity. The main goal is for the vessel to operate with zero emissions in the harbour of Gothenburg, which will improve the air quality in the area.