Cost Standards for Dredging Equipment 2005 offer a standard method to establish the capital and related costs of various types of dredging plant and equipment commonly in use. It provides a description of the most common dredgers and dredging equipment used, the principles and definitions for the standards and cost standard tables. These tables provide calculations on replacement values, depreciation and interest costs as well as maintenance and repair costs for the various types of equipment based on the experience from international dredging contractors which are members of IADC.