This Tariff Concession Order (TCO) declares that certain submersible dredging pumps (with excavating heads and a hydraulic power pack) are goods to which an item in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 9 February 2009 (s.269P). Mechanically, it changes how those imported pumps are treated for tariff purposes until revoked under ss.269SC or 269SD, affecting importers, customs officers and suppliers by altering duty/concession application and related compliance responsibilities.