Straight-14 engine

A straight-14 engine or inline-14 engine is a fourteen-cylinder internal combustion engine with all fourteen cylinders mounted in a straight line along the crankcase. A straight-14 is a very long engine, and therefore only suitable for marine installations in large ships.
Examples.
The only engine of this type known to have been built is a member of the Wärtsilä-Sulzer RTA96-C family. It is the world's most powerful combustion engine and is mounted in "Emma Mærsk", the world's largest container ship. It is of two-stroke diesel engine configuration. The engine became well known due to photos taken at the Aioi Works in Japan, which subsequently spread through blogs.
The 14-cylinder version of this modular engine produces and displaces , with a cylinder bore and piston stroke. The engine is long, high, and weighs .
If built, the 14-cylinder variant of the MAN B&W K108ME-C would be even larger at nearly long, and over , and more powerful at .