Hi Janem
Very interested in your post re Castle Rock. My grandfather John Cawse Prout was the captain of Castle Rock from 1892 to 1894. Would be interested in your grandfather's letters of his trip.
Also, my father, Stanley Yerward Prout ( son of John Cawse Prout) was Chief Engineer on the Straits Steamships in Malaya from about 1926 to when the fall of Singapore occurred, 1942.
Hope this may be of interest to you.