Coastal and Marine Pollution
Key departmental publications, e.g. annual reports, budget papers and program guidelines are available in our online archive.
Much of the material listed on these archived web pages has been superseded, or served a particular purpose at a particular time. It may contain references to activities or policies that have no current application. Many archived documents may link to web pages that have moved or no longer exist, or may refer to other documents that are no longer available.
Australian and New Zealand Environment and Conservation Council, 2000
In general maintenance of small and large vessels should be conducted at an appropriate facility, either above the tidal zone or in a dry dock. The hulls of vessels pose a number of risks to the local environment including the release of toxic chemicals from antifouling paints and the release of exotic species that may have fouled the hull. With respect to exotic species, in particular, large vessels (>25m) should be maintained out of the water, whenever possible.
The water blasting, particularly of large vessels (>25m) with self-polishing co-polymer painted hulls is used to remove the hydrolysed layer as well as slimes and light fouling prior to repainting. This process can generate coloured waste water. Coloured run off should be avoided and, where practical, water should be recollected for recycling or released to sewer (with approval of sewerage authorities).