In the distance Bolan could hear the telltale clank of metal tracks and the monotonous drone of powerful diesels.

World's most powerful diesel locomotives, delivered in 1969, the year of Union Pacific's centennial.

The T-72's powerful diesel responded by accelerating to maximum speed.

Wärtsilä-Sulzer RTA96-C-world's most powerful, most efficient and largest diesel engine.

A similarly powerful 1.6-litre diesel will be offered with two- and four-wheel drive and a six-speed manual.

These locomotives are the most powerful diesels to run in Ireland, and are of 3200 horsepower (2.5 MW), which enabled further acceleration of express services.

It is equipped with a powerful diesel, turbocharged, air-cooled engine and five-speed manual transmission.

Counterintuitively, the two more powerful diesels were not available with the coupé bodywork.

The U-505 wheeled in a tedious circle, her powerful diesels chugging slowly as she nosed through the depths like a gray, toothless shark.