I have found some incredible photos of a shipbuilding industry that relied heavily on the Canadian Pacific Railway for its operations.  The advantage to us layout builders is this shipbuilding industry could fit on almost any size layout.

As I mentioned in a previous post, once I was satisfied that a model railroad produced good chemistry in my classroom, my initial thought was to add a simple yard module so that trains could actually arrive on the Inglenook from somewhere, and to develop the industries which were now just empty car spots. Even those two things, I realized, would provide many additional dimensions and allow us to incorporate a more robust rationale for the distribution of specific car types.