Hallo, Jim i'm glad the sources were helpful. it occurs to me that the Three Bells in 1851 might have come to Pt Adelaide via Western Australia but I haven't yet been able to find whether the following indexes are online: "Western Australia State Library Card Index of Shipping 1829-1876" and "Fremantle Harbours & Lights Dept Records of arrivala & departures of vessels 1837-1861". Maybe someone can let us know?
in the meantime, this "shipping starter sheet looks like a good summary of Australian sources:
http://www.coraweb.com.au/shipshee.htmBest wishes to you & other researchers, bess