Hi, was just about to post with the same question - having just found two tickets for my ggg uncle.
The later one - 1856 names both ports (London to Melbourne) but I am equally curious to know how to read the coded information in the earlier one.
His earlier ticket for out in 1845 reads S 3006,64,11, 64,1,6 and home in 1846 reads S 3006,64,11 64,18,5
Hope someone can shed some light on it!
Caroline.