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DISCLAIMERThese reports were prepared as an account of government-sponsored work. Neither the United States, nor the United States Navy, nor any person acting on behalf of the United States Navy (A) makes any warranty or representation, expressed or implied, with respect to the accuracy, completeness or usefulness of the information contained in this report/ manual, or that the use of any information, apparatus, method, or process disclosed in this report may not infringe privately owned rights; or (B) assumes any liabilities with respect to the use of or for damages resulting from the use of any information, apparatus, method, or process disclosed in the report. As used in the above, "Persons acting on behalf of the United States Navy" includes any employee, contractor, or subcontractor to the contractor of the United States Navy to the extent that such employee, contractor, or subcontractor to the contractor prepares, handles, or distributes, or provides access to any information pursuant to his employment or contract or subcontract to the contractor with the United States Navy. ANY POSSIBLE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR PURPOSE ARE SPECIFICALLY DISCLAIMED. December 1997 T he purpose of this study is to identify practical technology that can be used by shipyards to remove tributyltin (T BT) from large volumes of water to levels below 50 parts per trillion. T his study is based on: (1) a review of scientific and engineering literature, (2) a review of U.S. Patents, and (3) a survey of manufacturers and users.
APPLIED MARINE RESEARCH LABORATORY
A REVIEW TO DETERMINE STATE-O F-THE-PRAC TIC E TREATMENT TECHNO LO GIES FO R REDUCING CONCENTRATIO NS O F O RGANO TIN CO MPO UNDS IN WASTEWATERT BT based paints are the most popular antifouling paints used on the hulls of the global merchant fleet, and the market share of T BT is still growing despite its banning or partial banning in certain areas. Shipyards generate large volumes of T BT -laden washwater during normal drydock operations.
