When used by the Maritime Services Board the interior made extensive use of scagliola and terrazzo to imitate marble flooring and walls, a common technique at the time. A war memorial and associated artwork were also included. These features remain in what was known as Wharfage Hall, the two-story lobby at the building's central entrance. Today, adapted for use as a museum, much of the interior is now gallery space with plain white walls, concrete floor, and high ceilings. The fourth story's offices have been retained for the museum administration.
