A support for main bearings. In most of the modern engines, in case of conventional crankshaft, the crankshaft rests on the bottom half of the main bearing. The bottom half of the main bearing is resting over the saddle created in the bedplate. Thus the complete load of the engine will be transmitted via the main bearings to the bedplate and from there to the ship structure. But in case of undershrunk crankshafts, the crankshaft will not be resting over the bedplate but it is overhanged or undershrunked from the bedplate. This is useful for the easy removal of the main bearing for inspection and replacement.