To provide the necessary visibility angle would be my guess. The proportions of superstructure height & hull length are Ok if you look at http://cdn2.shipspotting.com/photos/middle/8/5/5/1519558.jpg

I wondered on that before too,, why such a "high" accommodation,, two stories lower would have done too,, not that a bulker, designed for ore carrying ever needs to have a high bridge to look over cargoes like will say a container ship. Nice shot Stephan

Nice photo of this big brute...Even though the hull of the ship is huge the accomidation still looks large too. Sometimes with these big ships the accomidation does look small in comparsion. B'regards.