I recently came across this photo of the P&O ship SS Strathaird, one of the five "Strath" class ships of that line. The others were Strathnaver, Strathallan, Stratheden, and Strathmore.
The photo was taken in 1932 while she was on her maiden voyage, and is of some significance. She left Tilbury on 12th February 1932 and as the Sydney Harbour Bridge was officially opened on 19th March 1932, it's safe to assume that she would be one of the first ships photographed near that Aussie icon.
Strathaird has always rated a mention in our family, as my parents sailed to Fiji aboard her in 1936 while on their honeymoon.
The photo came from this website, which is a mine of information on P&O ships
http://www.ssmaritime.com/strathaird.htmPeter.