This report presents the results of the third inspection of the IRG/COIPM International Marine Test specimens installed at the Goat Island Marine Biological Station of the Maritime Services Board of New South Wales, in Sydney Harbour. The inspection was completed on 5th December, 1979, after 24 months exposure. As on previous occasions, this inspection was carried out in conformity with the provisions of the Working Plan (see IRG/WP/414) apart from an X-ray examination of the specimens. This facility is not available at the test station. At the conclusion of the inspection, all specimens remaining on the frame designated for removal at this inspection were recovered, re-labelled and despatched to Portsmouth for laboratory examination. The re-designed frames of PVC water-pipe were found to be in good order and can be expected to survive the remaining 5 years of test exposure.

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