On either side of the space is a six-pounder gun. On the forward bulkhead are situated several sideboards and bookcases. The aft bulkhead has two built-in couches, and also has an upright piano, which was supposed to have been used to celebrate the victoryof the Battle of Manila Bay. In the center of the room is a large segmented table surrounded by chairs, and cut to fit around the column in this location. Above the table is a large skylight, which rises topside, two decks above. The overhead is constructed of riveted steel. It was in this space where Commodore Dewey laid out his plans for the Battle of Manila Bay, and where he met with his commanders during the lull in the battle. During the battle, it was used as a sick bay space. Here the senior officers would have spent their free time, took their meals, etc.

In the early part of this century, it was recorded that a fragment of Spanish shell from the Battle of Manila Bay was still lodged in the wardroom woodwork. It has since disappeared.