The Future of Earth-Ship Fleet
The vessel shown is not one of the existing EARTH-SHIP fleet. It is, however, the same dimensions: Length, breadth, deadweight tonnage, and sailing rig configuration. Essentially this is exactly what future EARTH-SHIPs - EARTH-SHIP One, Two, Three, and so on - will look like.
Below are the preliminary plans for future vessels. Note the communications cabin on the main desk, as well as the amphitheater amidships.