This is a tad late, but I haven't been on here long.
I sailed on both. Nowshera 29/7/71-23/4/72 as 5th/4th/E/O. Nyanza 24/4/72-30/6/72 as 4/E/O. Left in Mombasa to join Raj as wanted to stay out East and not come home. You must have relieved me. Was only on the Raj for two weeks. If I remember, had 3 days in Mombasa and Totosan organised a safari to the Tsavo. I also sailed on the Nardana after the Raj. All great ships. Best years of my life were at sea with BI.