Motor launch moored at Water Pollce wharf is the MV. ''SI-BON'' dept. Harbours and Marine. The next one up stream is ex. Boom defense ship''KOALA'' She was jammed under the Centenary bridge during the 1974 flood. They had to blow her up and sink her, other wise the bridge may have been damaged beyond repair. Next one upstream is the Tug ''FORCEFUL'' before moving to her new home at the South Brisbane dry dock.