What is difference between MC and MC-C engine in MAN B&W???

These are the physical differences between the two.

The first MC-C engines to be introduced in 1988 were K80MC-C and K90MC-C engines. They were almost identical to the MC engines of the time, but the layout was optimised for container vessels (at that time the -C stood for "container"). I 1994 the K98MC-C engine was added to the programme.

In 1996 and onward the MC-C versions of the small and medium bore engines were added to the programme. In this case the -C stands for "compact", as the engines were intended to be lighter, cheaper and yet more powerful. They feature an integrated camshaft housing, simplified cross-head and a variety of other smaller changes to facilitate the "compact" concept. In exchange the fuel injection system was simplified and the VIT system was made an option. The small and medium bore MC-C engines are thus best suited to vessels operating for prolonged periods at the power at which the engines are optimised.

The engine types prior to the introduction of the MC-engines were designated e.g. EF, FF, GF, GFCA, GB. The first letter was an indication of the mean pressure, while the subsequent letters were an indication of the application and turbo charger efficiency. This system was increasingly difficult to maintain as the engines were being developed and it had earlier been decided to reduce the designation to two letters. Some letters were already in use to designate stroke or used in 4-stroke designations. It was thus decided to name the new engine type MC, where M indicates the mean pressure (but not strictly according to the previous system) and the C indicated the turbo charger efficiency. This was at the same time the last engine designation according to the old system.


MC-C is more compact and produces more power compared to an MC engine.