The tailtube allows the buoys to remain upright in extreme weather conditions, as well as providing excellent anti-heel properties. The AQ 1500 can reach a focal height of up to 2.5m.
The buoys are generally used in estuary, nearshore and inshore applications where high visibility is a major requirement. The AQ 1500 is constructed around a central galvanised steel hull structure with rotationally moulded medium density polyethylene (MDPE) floats. This results in very strong yet lightweight buoy, which can be easily handled by small craft and can be laid down on its side by maintenance crew when working on deck.