Emissions are an inevitable subject in shipping, and the roads to reducing greenhouse gas emissions are numerous and up to each company to find their way towards our common goal. Recently, we have investigated a method that captures CO2 before it is released into the air. We went to visit a company in Rotterdam that makes these CO2 capture devices to understand how they do it.

The company is called Value Maritime and they have developed an open loop scrubber with an optional module to capture CO2. So far, the CO2 modules have not been used because there is no economic incentive yet, but when the EU ETS comes into effect, the cost of capturing might be lower than buying the EU ETS allowances (Capturing costs about 75 EUR / tonne).

So how does it work? After the scrubber has washed the exhaust gases and the temperature has dropped, the fumes pass through an aftertreatment module where a liquid is injected to bond to the CO2. The liquid is then stored in a tank and can be offloaded to shore. This method is different from many other systems that liquefy the CO2 and require a lot of energy.

After the CO2 is stored in the liquid (generally about 30% of total emissions to be efficient), it will start its second life. It will be used in – and yes this is really happening – greenhouses. CO2 is an important ingredient for photosynthesis and adding more CO2 in the air helps growing vegetables like tomatoes or cucumbers. After the liquid has released all the CO2, it will be transported back to the ship for another round of CO2 capturing, working like a rechargeable CO2 battery.


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Cargoes & Services

Read more about our cargoes & services.

LGP & Petchem Gases

Navigator Gas operates a fleet of ethylene and semi-refrigerated gas carriers, with sizes ranging from 3,500 cbm to 35,000 cbm capacity.

Dry bulk

Through its subsidiaries Ultrabulk and Horizon, Ultranav serves a wide range of dry bulk segments. The fleet transports numerous types of dry cargo.

Coastal trades

Ultranav has many years of extensive knowledge operating in the coastal areas of South America. We cover a variety of trading platforms in different segments.

Towage & offshore

Ultranav is active in both towage and offshore segments through the subsidiaries Ultratug and Wilson Sons Ultratug Offshore.

Ultra Ventures

Ultra Ventures invest in maritime related start up companies, with the focus on new technologies.


UltraSafe is a programme designed to anchor safety within our culture. Its aim is to create a safety culture which everyone trusts; resilient and strong.

Fuel efficiency

Ultranav continuously investigates and invests in different devices and technologies to optimise our vessels and practices towards more sustainable solutions.


Ultranav operates a diversified fleet including owned tonnage, chartered tonnage and joint venture/co-owned vessels in different segments, offering a full variety of shipping services.