The Australasian Underwater Cultural Heritage Database (AUCHD) is an online, searchable database containing data on shipwrecks, aircraft that have been submerged underwater or wrecked on the shore, and other artefacts of cultural significance which are or have been underwater. It includes what used to be called the Australian National Shipwreck Database (ANSDB), originally developed by the in December 2009, now significantly expanded to include other objects. The database was hosted and maintained by the Department of the Environment and Energy until the environment functions of that department, including AUCHD, were taken over by the Department of Agriculture, Water and the Environment on 1 February 2020.