in 1969 an underwater search discovered the six abandoned cannons, ballast and an anchor which had been discarded by the "endeavour" crew in 1770 whilst attempting to refloat the ship. a replica cannon is on display at the australian national maritime museum in darling harbour, sydney, while the six original cannons are on display at botany bay, cooktown, canberra, philadelphia (us), wellington (nz), and london (uk).