Argonne (AG-31) at Navy Yard Pearl Harbor as flagship for the Base Force, 11 August 1941. Her camouflage is Measure 1 (dark gray with light gray mast tops), and she is flying the flags G-31--her hull number. The four-piper destroyers (or DM/DMS conversions) in the background are also in Measure One camouflage, with haze grey masts and funnel tops.