The simple cranked form follows the edge of an escarpment overlooking HMAS Coonawarra, and is oriented to the south to minimise solar heat gain and reduce the need for sun shading, with full-height glazing that provides high levels of natural light, and direct sightlines to the wharf.

A double height foyer links the customer service, conference and training facilities on the ground floor with the upper level, which comprises a flexible and adaptable office environment.

Addressing Defence’s strong focus on sustainability, the materials palate is robust, with a focus on low-maintenance and long-life cycles, particularly in the corrosive marine environment. These are rigorously detailed, with a focus on scale, modulation, and proportion.