Like other modes of transport, the shipping sector is reaching a point of no return. Changes must come, and we are already in the forefront of this process. Through our innovations and readiness for change, we will take on the challenge of combining efficiency and reliability with corporate and environmental responsibility. We have been pioneers in safety and sustainability in tanker shipping for many decades and we intend to keep our pole position.

Hybrid Solution

By adding electrical power to the vessels in our fleet, Terntank is taking a huge step towards clean shipping. These revolutionary tankers will completely change the way we operate.

The hybrid solution combines an onshore power supply with the conventional engines, enabling us to run on 100% electricity when handling cargo in ports. The cutting-edge Battery Pack stores electrical energy and provides clean power to manoeuvre to and from port without any extra generators. The hybrid solution gives the twin advantages of reducing emissions near land as well as radically decreasing the noise generated by the ship’s engines.

Estimated savings of diesel consumed per year and per ship are in the magnitude of 145,000 litres. An increasing number of ports are ready to invest in onshore power supplies that can provide vessels with the necessary charging from the quayside. This allows us to use green energy, making savings and environmental benefits even greater.

The hybrid system includes

  • Energy storage system
  • Shore power connection
  • DC Link system
  • Frequency-controlled cargo and ballast pump
  • Biofuel compatible

Hybrid vessels equipped with the new system displaying the Hybrid logo on their LNG/LGB tanks.

We want to modernize the way we see tanker shipping

Tryggve Möller


Our environmental awareness has taken Terntank operations into another league with the application of the Just-In-Time management philosophy. Over the last four years, Terntank has implemented the Just-In-Time concept in close collaboration with its customers and in doing so has saved hundreds of metric tons of fuel.

How it works

Just-In-Time is an operational method that aims to minimize waste – in our case, to optimize voyages between ports and to reduce the time spent at anchor. This is achieved by constantly adjusting the vessel’s speed to meet its agreed time of arrival and utilising slow steaming to allow us to send a Virtual NOR, moving directly into port instead of dropping anchor and waiting to berth. This is a win-win situation for all parties involved. To ensure that we comply with the BIMCO clause on slow steaming and to track real-time savings, we have installed technology that gives the exact savings of the JIT operation in an emissions report.

Just-In-Time aims to optimize the voyage and minimize the emissions that are associated with the time that a ship spends at anchor while awaiting berth

Marcus Jakobsson


We are continuously developing sustainable shipping. One major step green operations was our decision to replace traditional fuel oil by LNG (Liquid Natural Gas). This changeover to the far cleaner fuel of LNG on our Avic series brought about huge improvements for the environment: CO2 emissions reduced by 20%, SOx by 99%, NOx by 97% and particles by 99%. However, LNG is still a fossil fuel and we had even higher ambitions. Our LNG/Avic vessels are now able to operate on 100% biofuels. 

LBG (Liquid Biogas) is essentially a fossil-free version of LNG made from renewable resources. We carried out our first trials with a biofuel blend in 2018 and they were entirely successful, preparing us for the next step towards fossil-free operations.

Tern Ocean currently runs on 10% LBG supplied by the Swedish fuel company Preem, which has high ambitions for sustainability. We believe that this example of close cooperation between environmentally responsible companies is the start of a new green era in shipping.

The LBG that we use is made from organic waste and residues and is certified by the ISCC (International Sustainability & Carbon Certification).

LNG is just the first step. It is quite feasible to gradually increase the proportion of LBG since the combustion technology and infrastructure works equally well for both gases.

All our vessels are able to run on biofuels

Claes Möller


Safety is one of the most important aspects of tanker shipping, and many improvements have been made during the history of Terntank. We have remained far ahead of legislation in this area by continuously striving to make our ships better and safer right from the start, meaning at the design stage. Tärntank Rederi AB took delivery of its first double-hull tanker as early as 1974, several decades before it became mandatory.

In 2011, Tärntank launched the Tärntank Environmental Shipping project in collaboration with the fuel company Preem. In this project, the tanker Tarnvag was fitted with a catamiser to the main engine and all auxiliary motors. The catamiser recovers heat from exhaust gases and uses selective catalytic reduction (SCR) to cut down NOx emissions.

Tärntank is an island-based family company, established by seafarers and still operated by people with maritime experience and professional competence from shipboard operations. This background makes it so much more than just another shipping company; it brings with it the highest ambitions to make working and living conditions for its seafarers the best achievable. It is true that modern society has depended on the reliable transportation of oil, oil products, and chemicals, but living close to the sea has made the management of Terntank highly aware of the sensitivity of the marine environment and the changes necessary to offset climate impact.

Switching to LNG improved the working environment by raising the air quality onboard – smells were noticeably less on the tankers

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