original_query: What is the purpose of the Mission Buenaventura class ships?
query: What is the purpose of the Mission Buenaventura class ships?
answer: The Mission Buenaventura class ships were Type T2-SE-A2 ships, initially ordered as civilian-operated transport tankers.  They transported fuel to US forces overseas during and after WWII, before being transferred to the Naval Transportation Service and later the Military Sea Transportation Service.