Technology group Wärtsilä has signed a new long-term overhaul frame agreement with Swedish operator Erik Thun Group. The agreement has been developed jointly with longstanding fleet management partner MF Shipping Group, and includes comprehensive overhaul services, technical services, field services, workshops support, and parts supplies. The aim is to ensure the longevity and performance of the 4-stroke medium-speed engines, propulsion machinery, and shaft line equipment installed throughout the Erik Thun Group fleet. The agreement was booked by Wärtsilä in Q1 2026.
The shipping industry is shifting from transactional services to long-term lifecycle partnerships, prioritising operational continuity and efficiency in response to market demands for reliability and sustainability. Enhanced digitalisation and regulatory pressures are driving companies to adopt future-ready models that ensure safety, resilience, and ongoing value creation.
“This agreement reflects our commitment to reliable operations and continuous improvement. We continue to introduce new and increasingly sustainable generations of vessels, and in this, the know-how and expertise of Wärtsilä plays an important role,” comments Henrik Källsson, Deputy Managing Director, Erik Thun Group.
The scope of the agreement between Wärtsilä and Erik Thun Group includes comprehensive technical and operational services, including maintenance of 4-stroke medium-speed engines, propulsion systems, and shaft line equipment across Erik Thun Group’s fleet. Wärtsilä will deliver field services to minimise vessel downtime through proactive maintenance. Workshop support will be provided to recondition and restore components to working condition and to meet OEM standards. In addition, a reliable supply of spare parts will ensure consistent operational reliability.
Erik Thun Group will benefit from improved fleet performance, technical services, extended equipment lifecycles, and assured operational continuity, ensuring their vessels operate efficiently and sustainably.
“By delivering broad service coverage and OEM-level support, we can enhance fleet reliability, minimise downtime, reduce fuel consumption and simplify overhaul planning for short sea schedules. As the industry moves towards decarbonised operations, Wärtsilä provides the lifecycle support needed to ensure compliance, operational performance, and future-ready viability,” says Stefan Wiik, Vice President, Parts & Field Service, Wärtsilä Marine.
The Erik Thun Group fleet, comprising of general dry cargo vessels, product tankers and cement carriers, operates across Northern European short sea shipping routes with around 50 vessels serving multiple segments. As a longstanding Wärtsilä customer, Erik Thun Group has procured engines and propulsion solutions for various vessel classes.
Media contact for more information on this release:
Isabella Alder
Positioning and Strategic Communications Manager
Wärtsilä Marine
Tel: +44 (0) 7792 681 757
marine.media@wartsila.com
Image caption: Wärtsilä and Erik Thun Group have signed a long-term agreement to ensure reliable engine and propulsion performance across the fleet. © Erik Thun Group
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Wärtsilä Marine in brief
Wärtsilä Marine is a global pioneer in power, propulsion and lifecycle solutions for the marine market. We develop industry-leading technologies, advancing maritime's transition to new fuels. We support building an end-to-end digital ecosystem where all vessels and ports are connected. Ultimately, Wärtsilä Marine is driving the shipping industry forward on its journey towards a decarbonised and sustainable future through our broad portfolio of engines, propulsion systems, hybrid technology, exhaust treatment, shaft line solutions and digital technologies, as well as integrated powertrain systems. Our offering, which is underpinned by our performance-based agreements, upgrades, lifecycle solutions, decarbonisation services, as well as an unrivalled global network of maritime expertise, delivers the efficiency, reliability, safety, and environmental performance needed to support a safe and sustainable future for our customers, our communities and our planet.
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Wärtsilä in brief
Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy industries. We emphasise innovation in sustainable technology and services to help our customers continuously improve environmental and economic performance. Our dedicated and passionate team of 17,900 professionals in 199 locations in 78 countries shape the decarbonisation transformation of our industries across the globe. In 2025, Wärtsilä’s net sales totalled EUR 6.9 billion. Wärtsilä is listed on Nasdaq Helsinki.
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