Hopefully the following may be helpful.
The report at:
https://trove.nla.gov.au/newspaper/article/3040152 refers to a death of a sea-going Captain [presumably the George MacLeod under discussion] that occurred on 15th June 1892 and the date of the newspaper article is 15th September 1892.
However, there are several reports dated 8th September in Welsh Newspapers Online which refer in some detail to the death of Captain George McLeod, of the Swansea barque Windermere, who had been shot dead by a mutinous crew member. However, the date of this event, and thus the date of his death, is not therein mentioned.
Whilst the foregoing trove report refers to an apparently erroneous understanding of the signals that had been flown (presumably in June?), this report of 8th September:
https://newspapers.library.wales/view/3232288/3232290/18/ specifically refers to "flying signals" passing on news of the murder of the 65-year old Swansea man.
Intriguingly, the trove report of 17th August highlighted by Christine53 refers to the Windermere arriving in Fremantle on 8th August "from Glasgow", whereas the WNO report above states that "The [Swansea] barque [Windermere] was outward bound from Glasgow".
Additionally, this report:
https://newspapers.library.wales/view/3232383/3232385/11/ refers to the arrival of the Swansea barque at Fremantle on 9th August.
However.........this report:
https://newspapers.library.wales/view/3724087/3724093/110/ of 29th September appears to clear everything up.
Or does it?
In the light of the reference in the trove article of 17th August to 'troublesome seamen', how might the sentiments (or perhaps prejudices) expressed in this article: "English Versus Foreign Sailors"
https://newspapers.library.wales/view/3232378/3232381/64/ be rationally considered?
Willyam