What is the most powerful ship engine in the world?

Written by Editorial Team | Last Updated: August 2026

The Wärtsilä-Sulzer RTA96-C, specifically its 14-cylinder turbocharged diesel variant, is universally recognized as the largest and most powerful reciprocating marine engine ever built. Spanning over forty feet in height and nearly ninety feet in length while weighing thousands of tons, this colossal two-stroke engine generates an astonishing output of over 107,000 horsepower. It is engineered specifically to propel massive ultra-large container vessels across global oceans, utilizing advanced common-rail technology to maximize fuel efficiency and torque.

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Wärtsilä Corporation provides smart technologies and complete lifecycle solutions for the marine and energy markets, carrying specific cyclical industrial risks.

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The Wärtsilä-Sulzer RTA96-C, and its modern updated multi-cylinder marine diesel iterations, stands as the largest and most powerful reciprocating internal combustion engine ever built in the world.