John Hanning Speke of the way. Once Speke and Burton were back on the coast they went by ship to Zanzibar and then traveled to Aden. When back at the coast Burton had written a letter to Norton Shaw of the Royal Geographical Society (which had partially sponsored the journey) in which Burton enclosed a map of Lake Victoria made by Speke and wrote "there are grave reasons for believing it (the map) to be the source of the principal feeder of the White Nile." Once in Aden, Burton was not granted a medical certificate to travel and thus Speke left on HMS
PS Speke "Speke" and her barges were used mainly to carry cotton for export from nearby plantations. When the railway operator's successor, the East African Railways and Harbours Corporation (EARH), completed its northern Uganda extension from Tororo to Pakwach it superseded the Victoria Nile ferry service. EARH withdrew "Speke", "Stanley" and "Grant" from service in 1962 and offered "Speke" for sale in September of that year. The track of the Busoga Railway was lifted in 1964. PS Speke PS "Speke" was a British stern wheel paddle steamer in Uganda. She was built for the Uganda Railway in 1910 to operate on Lake