Wärtsilä and TMS Cardiff Gas Renew Lifecycle Agreement for LNG Carrier Fleet

Technology group Wärtsilä and TMS Cardiff Gas have renewed their existing Lifecycle Agreement for a further five years, covering the 2-stroke main engines onboard seven LNG carrier vessels. The renewed order was booked by Wärtsilä in the third quarter of 2025.

The agreement aims to enhance the operational reliability of the fleet by enabling flexible maintenance scheduling and optimising time between overhauls (TBO). Under the new terms, Wärtsilä will continue to support TMS Cardiff Gas with a combination of digital maintenance services, remote monitoring, and predictive analytics to minimise downtime.

LNG carrier operators face increasing pressure amid tight delivery schedules, shifting regulations, and volatile market dynamics, including oversupply and geopolitical uncertainty. In this context, maintaining uptime and vessel reliability remains a key operational challenge.

“In a competitive market, unplanned downtime is costly. The agreement’s combination of technology, high-quality spare parts delivery and expert support means we can continue to strengthen the operational reliability of these vessels, ensuring we can meet rising global LNG demand and tight delivery schedules,” said Alexandros Politis-Kalenteris, Deputy COO, TMS Cardiff Gas.

Each of the seven LNG carriers is powered by two WinGD 5X72DF dual-fuel two-stroke engines and Wärtsilä gas valve units. The agreement includes Wärtsilä’s Dynamic Maintenance Planning service, which allows for extended maintenance intervals, reduced spare parts usage, and real-time operational support. It also covers Expert Insight, Wärtsilä’s predictive maintenance platform that leverages real-time vessel data to detect potential performance issues before they escalate.

“Maximising uptime while ensuring safety, flexibility and reliability is critical for operators,” commented Stefan Wiik, Vice President, Parts and Field Service, Wärtsilä Marine. “Our advanced digital solutions and lifecycle support empower our customers to achieve operational excellence and maximise the availability of their assets.”

Founded in 2011, TMS Cardiff Gas manages a fleet of 20 modern gas carriers and is part of the TMS Group, which oversees over 140 ships across the LNG, LPG, oil/chemical, dry bulk, and container sectors.