For certain types of vessels, the height required for overhauling purposes is a significant parameter in the process of selecting the two-stroke main engine.

For tankers and bulk carriers traditional ship designs involve much available height in the engine room and engine height is therefore not critical.

Other types of ships, like RO-RO ships, and even in some cases container vessels, may need an engine room height as low as possible, since they also carry cargo located above the engine room. The cargo carrying capacity of a ship is always to be optimised.

For such cases the engine room height can be reduced using tilted lifting procedure of engine components during overhaul, and in some cases a special twin hook crane is used to further lower the requirements for engine room height.

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