I think she is the pre war one.... can't find another pic of her but http://www.wrecksite.eu/wreck.aspx?180288 is similar pre war tonnage. Also...my 1960 LSI lists a 1952 built Tokyo Maru.... by then she would have had radar... this ship doesn't have one
Here you go... a bit rough but her sister ship also leaving Melbourne http://www.combinedfleet.com/Canberra_c.htm and another shot of Tokyo Maru can be found here http://www.benjidog.co.uk/allen/Lines/Osaka%20Line.html
thanks for that Cisco, certainly can't argue with that link to Canberra Maru!
The photo of the Canberra Maru seems to be almost exactly the same photo as this one and it appears as though the name 'Canberra' on the bow has been added to the photo later, so presumably this is a company photo of the Tokyo Maru and in fact the link to the so-called Canberra Maru actually probably shows Tokyo Maru as well.