1. On the waterfront,  ferry terminal was installed.
2. railway was extended along the southern coast.
3. In the south, all of the trees and houses were cleared to make way for large factory, while to the south-east of factory, on the waterfront, a ferry terminal was installed.

When introducing a singular noun for the first time, use: a / an.

When referring to a noun after you have already introduced it, use a / an.