There is no doubt in my mind that the Guelph account was deeply flawed, if it in fact took place at all ! But for argument's sake, if there was genuinely an attempt to exchange signals, apart from 'TAH' what COULD the last three letters have been??
...one could go on forever in pursuit of this pointless exercise !!
Or maybe not?!?!
There were allegedly 10 other ships at sea along the South African coast on the evening of 27 July, 1909. Apart from Clan MacIntyre; Harlow; Guelph and Illovo, what were the names of the remaining six?