Did Britain or the United States develop alongside replenishment?
Short answerThe discussion traces early work to Britain but credits the United States with popularizing the method in the Pacific, while British fast-oiler conversions curtailed its own plans.
NotesThe United States popularized alongside replenishment during its Pacific campaigns. British work on the method is traced to the First World War and interwar period, including plans to equip a new generation of fast oilers. The discussion links their conversion into other wartime vessels to a narrower expectation of operations in the North Sea and Mediterranean. Those waters placed less demand on fast oceanic support ships than the Far East did. Losing the oilers therefore reduced Britain's ability to sustain a fleet in Asian waters and could signal that limitation to Japanese observers.