Platano was built by Cammell Laird of Birkenhead, England, launched on 13 March 1930 and completed that June.[2] United Fruit had a sister ship, SS Musa, built in the same year by Workman, Clark of Belfast, Northern Ireland.[5]
On 18 February 1943 the Director of the Naval Transportation Service approved acquiring the two ships as United States Navyauxiliary ships and on 1 March the Auxiliary Vessels Board endorsed the decision.[1] On 16 March the Naval Transportation Service requested that Platano be assigned to the Navy and on 24 March the Auxiliary Vessels Board confirmed this had been done.[1]
Soon the plan was changed, with an older banana boat, SS Ulua being substituted for Musa.[1] On 22 April 1943 the Vice Chief of Naval Operations assigned Platano and Ulua the names and classificationsUSS Octans (AF-26) and USS Pictor (AF-27).[1]Ulua was duly acquired, renamed and commissioned into the Navy but Platano was not.[1] The Auxiliary Vessels Board decided on 22 May 1944 to cancel Platano's acquisition, and the cancellation was executed on 26 May.[1]
In 1947 United Fruit reflagged Platano from Panama to the Honduran flag of convenience.[1] By 1964 the company had transferred her from Balboa Shipping to another subsidiary, Empressa Hondurena de Vapores.[4] She kept her original name until 1965, when she was renamed El Toro.[1] She was scrapped in 1966.[1]