Mon Calamari Shipyards is one of the four Corporations in the mod and allows a cost and build-time reduction to specific ships and Vehicles only on the planet that the Corporation is built at. This Corporation can be built on the planet Mon Calamari and is available only to the New Republic.
These are the space units that are affected by the Mon Calamari Shipyards Corporation:
This Corporation doesn't provide a price/build-time reduction bonus for any ground unit because of the Mon Calamari's status as a starship manufacturer exclusively.
Just by default, Mon Calamari Shipyards can only provide the price/build-time reduction bonus for three ships for all 5 eras (MC40a + MC80 + MC80b eras 1-2, MC40a + MC80b + MC90 eras 3-5) and as a whole provides only for four ships. Not even the Viscount-class Star Defender or any other New Republic capital ship is affected.