MAN‘s definition for its intermittent duty marine engines is based on the following operating conditions:

Annual operating hours: less than 3,000 hours
Percentage of full-load running hours: less than 50%.
Average hours at full load: less than 70%.

Fascination with technology
The power range of MAN marine engines for intermittent service extends from 400 to 1,400 hp with in-line 6-cylinder, 8-cylinder and 12-cylinder V-cylinder engine configurations.