In 2015 an Anthropometric Survey of the Royal Australian Navy (ASRAN) was conducted providing comprehensive digital and manual anthropometric data (body size and shape) that can be used for the design of vessels, equipment, and clothing. This document has used that data to develop evidence based human factors engineering design guidance that can be used to tailor design solutions to optimise the fit between the Royal Australian Navy (RAN) population and Her Majesty's Australian (HMA) Surface Ships and Submarines, and their systems, subsystems, and facilities.