Stena AB /

Stena Teknik

Stena Teknik is a technical resource for Stena’s marine-related business areas. The broad and extensive knowledge of its employees enables the company to develop solutions that increase the competitiveness of our business areas.

Quality assurance during vessel construction

Construction of the IMOIIMAX vessel series is in progress and Stena Teknik has had personnel on site at the shipyard to ensure that the vessels are delivered according to contract and specification. The project manager is based in Gothenburg, while the inspection team and manager are stationed at the shipyard in China. The project has been successful so far, which is a result of the good relationship with the shipyard and its subcontractors.

Stena Teknik is also involved in inspection work during construction of the Stena MidMAX drilling rig in South Korea, with personnel based in Gothenburg and stationed at the shipyard.

Electric ships are the future

Stena Teknik conducted a study on ­possible future fuels together with an external consultant. Companies from the entire Stena Sphere participated in the study, which resulted in unique consensus on the alternative fuel choices.

The study took into account availability, price and environmental impact at every stage “from well to propeller” for each fuel. Low-sulphur diesel fuel or high-sulphur fuel oil in combination with exhaust gas cleaners (scrubbers) are considered to be the main alternatives in a ten to fifteen year perspective. Methanol and LNG may also be options, but for specific routes.

Battery technology will also be developed in terms of capacity and price, so that vessels built for shorter routes could be fully operated using electricity. Stena Teknik is currently developing a fully electric future vessel concept for Stena Line. As part of this development and to acquire the necessary knowledge and experience, the initial phase involves installing batteries to cover some of the energy requirements in and out of port on one of the ships in Stena Line’s fleet. Stena Teknik is also investigating the feasibility of completely fossil-free operation within ports and groups of islands for existing vessels by installing electric motors and batteries.

Better decision support for increased safety

Safety is high on Stena Teknik’s agenda. Together with the Lighthouse Maritime Competence Centre, a study is being conducted on how technology for increased autonomy could be used to provide better and more user-friendly decision support onboard with the help of information from existing systems and complementary sensors.


Harry Robertsson

CEO, Stena Teknik

To further improve energy efficiency, the vessels displacement needs to be reduced by decreasing the lightweight of the vessel. The maritime regulations often hinder that we use lighter weight materials and equipment on our vessels. A framework for energy-efficient vessels (Energy Efficient Craft Code) should therefore be developed. Lighter vessels require lower installed engine power, which can lead to alternative and more efficient propulsion arrangements.

The IMO’s Ballast Water Management Convention comes into force in 2017. The Convention, which is aimed at preventing micro-organisms in the ballast water being transferred from one marine area to another, will involve investment in new equipment to treat incoming ballast water. Stena’s fleet will be reviewed and a priority list for the installations will be established.

IMOIIMAX Performance Phase

The key words for the IMOIIMAX are innovation and performance. When merged with the best technology available, innovation ensures efficient and flexible carriage of cargoes.