MAN Energy Solutions has announced two significant orders for its MAN 175D engine, one from Damen Shipyards and the other from Portuguese shipbuilder West Sea – Estaleiros Navais, to power new vessels for the Portuguese Navy.
Damen Shipyards has placed an order for multiple MAN 175D engines to power a new multi-purpose vessel (MPV). The order includes a total of four engines: two 12V175D-MEM engines, each delivering 1,800 kW at 1,800 rpm, and two 16V175D-MEM engines, each providing 2,400 kW at 1,800 rpm. These engines are scheduled for delivery in 2025, with the vessel expected to be delivered in 2026. The 107-meter long MPV will serve multiple roles, including oceanic research, search and rescue, emergency relief, maritime safety, and naval support operations.
Florian Keiler, Head of High-Speed Sales for Marine Four-Stroke at MAN Energy Solutions, emphasized the vessel’s versatility, highlighting its ability to perform deep-ocean research and undertake complex missions. “A key requirement for this order was managing structure-borne noise, so the 175D gensets will be equipped with double-resilient mounting systems to meet noise level specifications across the full frequency range,” Keiler said.
In a separate project, West Sea – Estaleiros Navais, a Portuguese shipbuilder, has ordered multiple MAN 175D engines for the construction of six 83-meter offshore patrol vessels (OPVs). The order consists of six shipsets, each featuring two 16V175D-MEL engines, with each engine delivering 2,960 kW at 1,800 rpm. These Viana do Castelo-class OPVs will be built at West Sea’s shipyard in northern Portugal, with engines to be supplied by MAN Energy Solutions’ Frederikshavn facility in Denmark. Delivery of the engines is scheduled to begin in early 2026 and continue through mid-2029, with vessel deliveries expected 18 months after each engine delivery.
The OPVs will primarily be used for long-range maritime surveillance and patrol, as well as search-and-rescue operations. Depending on onboard sensors and weapons, they may also be deployed for military operations in maritime zones of conflict.
Dietmar Zutt, Sales Manager for High-Speed Navy at MAN Energy Solutions, described the order as a key reference for the MAN 175D engine in naval applications. “Naval vessels demand high performance in maneuverability, speed, maintenance cycles, and environmental sustainability. The Portuguese Navy and West Sea chose the 175D engines due to their ability to meet power requirements of approximately 6 MW with just two compact 16V175D-MEL gensets. This solution provides a superior power-to-length ratio, reducing the engine room space required and lowering maintenance needs,” Zutt said.