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The new
£60,000 vessel arrived under its own steam in 1901 and, for its initial
deployment, Archer constructed a new half-mile dyke between Iguana Point and Shoal
Island. Here the dredge used a method employed with great success on the Mississippi
but which was as yet untried in Australia. The system involved the deposition
of successive layers of brushwood and sand pumped by the dredge to a height of
two to three feet above high water; the dyke was then faced with stone. Being
cheaper and quicker to erect than solid rubble, RHB resolved to use that method
for future walls where suitable.7
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