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Damen signs with Wärtsilä for supply of world’s most efficient four-stroke engines to CSS

Damen and Wärtsilä have signed a contract for the supply of the generator sets for the Royal Netherlands Navy’s (RNLN) Combat Support Ship (CSS), the HNLMS Den Helder. To mark the occasion, Wärtsilä handed over two Wärtsilä 31 building kits to the CSS project team, represented by the project directors of Damen Schelde Naval Shipbuilding (DSNS) Mr. Arjan Risseeuw and the Defence Materiel Organisation (DMO) CAPT (N) Glijn van Marion.

The contract awards Wärtsilä scope for the delivery of four next generation Wärtsilä 31 diesel generator sets. Wärtsilä will also supply the CSS with a selective catalytic reduction (SCR) unit, which will reduce the NOX emissions of the CSS in line with IMO Tier III regulations.

This is the first time that Wärtsilä 31 engines will be supplied to a naval vessel. DSNS and the DMO are seeking to make the CSS as environmentally friendly and energy efficient as possible. Therefore, the Wärtsilä 31 was the perfect choice. The engine offers optimal fuel efficiency throughout the operating range and is recognized by Guinness World Records as the world’s most efficient four-stroke diesel engine. Combined with the ship’s hull shape and propeller design, the Wärtsilä 31 will reduce the fuel consumption of the CSS by approximately 6% compared to a similar vessel with engines of another make and type.

The modular nature of the Wärtsilä 31 provides for a significant reduction in maintenance downtime and the need for spare parts. Additionally, at the request of the DMO, Wärtsilä is equipping the engines with additional combustion pressure sensors that, in combination with a Wärtsilä Data Collection Unit, offer the potential to collect data that will facilitate smart maintenance.

Damen and Wärtsilä have a long history of cooperation. The company has previously supplied DSNS with engine and propulsion systems for the Air Defense and Command frigates of the Zeven Provinciën class as well as the Landing Platform Dock (LPD) vessels. More recently, Wärtsilä supplied generator sets, propellers and shafting for the Fishery Research Vessel Baia Farta, built by DSNS for the Angolan Ministry of Agriculture and Fisheries. This project provides a sound basis for the CSS project. The two companies in the Netherlands have worked closely together on the base frame design for the CSS as well as on the integrated logistics support (ILS) package and extended warranty period in order to optimize performance.

Like DSNS, Wärtsilä Netherlands forms an important part of the supply base for the Dutch maritime industry. There is close collaboration between Wärtsilä Netherlands and the RNLN, with Wärtsilä providing maintenance and servicing support to the RNLN’s Naval Maintenance and Sustainment Agency (DMI – Directie Materiële Instandhouding, in Dutch). Wärtsilä Netherlands is a trusted partner of both DSNS and the DMO in the delivery of new technologies such as smart maintenance.

Left to right: Defence Materiel Organisation (DMO) Capt (N) Glijn van Marion, Wärtsilä Nederland Sr. Sales Manager Naval Systems Gise van Mourik
Left to right: DSNS Project Directors CSS Mr. Arjan Risseeuw, Wärtsilä Nederland Sr. Sales Manager Naval Systems Gise van Mourik
Wärtsilä 31 engine
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