None that I know of. I imagine if he was looking for a job at sea he may have joined any shipping company. I've noticed on crew manifests that there are men from numerous countries working on board.
What do you think of the sugggestion that it may be from a training ship or school of some kind? I also had the thought that it was possibly from a commonwealth navy or line. We had connections with Australia and I know he visited there at least once. The official photo was taken in Woodford Green, Essex. Not that far from where the family lived. Also not far from London ports.
Thanks for looking!