Hi Gary
Not sure about his cause of death.
Vesicle is the term for any sort of bladder, or bladder-like, even as small as a fluid filled blister.
In this case though it was probably a bladder haemorrhage.
Hemiotomy is not in my little medical dictionary but it seems to relate to a hernia of some kind.
Maybe he was in a fight on board ship?? These could be injuries. Though in that case you would think there would have been an inquest.
If the story of him dying a couple of days out of port is true, and they brought him back to Bulli, it indicates Australian coastal shipping (to me) rather than international.
Not sure how you find out if he was in the Australian merchant navy apart from contacting various lines. And as it was wartime...
The AUSN Co Ltd would probably be the largest. They seemed to range up and down the east coast.
But there were lots more I'm sure. I can remember ship names but not their lines.
If you think his Australian MN service was connected with war service, you might find something on the Australian War Memorial site?
www.awm.gov.au/ Dawn M