 Cumming transferred to HMS Princess Charlotte , a first @-@ rate ship of the line commanded by Arthur Fanshawe and flagship of Robert Stopford , Commander @-@ in @-@ Chief of the Mediterranean Fleet , on 28 November 1840 . By January 1841 Cumming had transferred again , being appointed lieutenant in HMS Britannia . Britannia , commanded by Michael Seymour , was another first @-@ rate and the new flagship of the Mediterranean Fleet , John Ommanney having succeeded Stopford as Commander @-@ in @-@ Chief . Cumming 's next posting was again within the Mediterranean Fleet , serving under Houston Stewart from 19 June 1841 to 23 May 1842 on the 74 @-@ gun third @-@ rate HMS Benbow . 
