Deep, strong ocean currents circle the globe in the Southern Ocean. This influential flow, known as the Antarctic Circumpolar Current, connects all three major oceans. Its narrowest constriction is Drake Passage, a location notorious for its challenging seas. Despite the difficulty, Drake Passage has seen several enduring studies by US, UK, and French researchers. For two decades, ADCPs carried by US Antarctic supply ships have continually measured currents during crossings of Drake Passage.