Wärtsilä has been selected to supply the engine and propulsion equipment for a new 3,800dwt heavy-lift vessel being built for Netherlands-based operator Hartman Seatrade.
The vessel will be constructed at Rock Shipbuilding, a new shipyard established by Hartman Seatrade. Wärtsilä said the order was booked in the fourth quarter of 2025, with delivery of the equipment scheduled for spring 2027. Financial details were not disclosed.
The vessel will be powered by the Wärtsilä 31 engine, which delivers high fuel efficiency while minimizing exhaust emissions. Wärtsilä said the engine’s modular design is intended to reduce maintenance requirements and costs, while allowing flexibility across a range of operating profiles, including both slow and fast steaming.
“Our focus is on efficiency, reliability and operational flexibility,” said Teele Hartman, managing director of Hartman Seatrade. “Wärtsilä engines have consistently performed well across our fleet. The Wärtsilä 31 offers the performance range we need for both slow and fast steaming, combined with low maintenance requirements.”
In addition to the main engine, Wärtsilä will supply a gearbox that enables operation in power take-in (PTI), power take-off (PTO), and power take-home (PTH) modes. According to Wärtsilä, these configurations are intended to improve fuel efficiency and operational resilience.
The propulsion package will also include a controllable pitch propeller (CPP), managed by Wärtsilä EcoControl and hydrodynamically optimized using the company’s Opti Design solution. Operating the propeller at lower speeds when full thrust is not required can deliver additional fuel savings.
Roger Holm, president of Wärtsilä Marine and executive vice president at Wärtsilä Corporation, said shipowners are increasingly required to balance efficiency and sustainability with operational demands. “Efficient energy use and advanced equipment are key to meeting regulations while staying profitable,” he said. “The Wärtsilä 31 engine, combined with complementary technologies, offers a logical path forward for cargo operators.”
Wärtsilä commented that it has an established working relationship with Hartman Seatrade, having previously supplied equipment for several vessels in the operator’s fleet.
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