In 1856 was the book The Convict Ship: a narrative of the results of scriptural instruction and moral discipline published at London. The author Colin Arrott Browning (1) published in this book his experiences during the voyage with the Earl Grey in 1843. Furthermore he supplied more details about other convict ships. The book is digital available via Googlebooks.
P. 264: “Between the 24th and 29th November 1848, two hundred and thirty-seven convicts were embarked in the “Hashemy” for New South Wales. This vessel having been visited by' cholera, was detained at Mother Bank until the 11th February, when we weighed, and proceeded on our voyage, with our number reduced to two hundred and twelve, seven having been for various reasons removed from the transport, and eighteen having been carried off by the pestilence. The Divine influence of Christianity on the minds and character of the prisoners on board the “Hashemy” was nearly as conspicuous as on former occasions, and, in some respects, even more striking and satisfactory. One hundred and fifty-one gave, before they landed in the colony, hopeful evidence of their conversion to God.”
Note
1. The website http://adb.anu.edu.au/biography/browning-colin-arrott-1838 supplies more details about the author who was a naval surgeon born in 1791 and passed on 23 October 1856 at Woolwich, England who served between 1831 and 1849 as surgeon-superintendent on board of convict ships bound for Australia. Medical care of the prisoners and their education were for him of the utmost importance.