I have just been perusing your very interesting site, especially the crew lists, but you appear to have only one very early list and then it is into the 1960's.
I had hoped that it would throw some light on the time in which I am interested.
I believe my grandfather, who was an engineer worked, at some point in his career for the Union-Castle line, but it would be back in the dim and distant past as he was born in Southampton in 1868. If you are able to go back to records of the late 1800's, I would love to have any information of him that you might find. My grandfather's name was Thomas Venn Mooney.