![Wärtsilä 25 ammonia engine. [Image: Wärtsilä]](https://www.marinelog.com/wp-content/uploads/2026/04/ammmoniawaer-300x225.jpg)
Wärtsilä 25 ammonia engine gets a power rating increase
Wärtsilä has increased the power rating of its four‑stroke Wärtsilä 25 ammonia engine. As part of the company’s ongoing development of ammonia‑fueled engine solutions, the upgrade to the Wärtsilä 25 ammonia engine