This unit describes the skills required to conduct explosive demolitions in an underwater environment. The unit also covers the conduct of maintenance on the established demolition circuits and includes the requirement to disarm and disassemble the demolition. The individual is also required to handle, transport and protect explosives in an underwater environment.This unit applies to those required to assemble and disassemble firing circuits, and to fix detonators, primers, firing devices and explosive charges in accordance with the demolition supervising officer’s plan in an underwater environment.The skills and knowledge described in this unit must be applied within the legislative, regulatory and policy environment in which they are carried out. Organisational policies and procedures must be consulted and adhered to.Those undertaking this unit would work individually and as part of a team, under indirect supervision. They would use discretion and judgement and take responsibility for the quality of their outputs, conducting routine tasks in a range of complex contexts that could be unpredictable.No licensing, legislative or certification requirements apply to unit at the time of publication.