Abstract
Due to rainfall caused by typhoon 17 · 18 in 2015 and typhoon 9 in 2016, a large amount of drifting flowed into the bay from rivers. The drifting garbage were collected immediately to prevent collision with vessels navigating the sea. Recovery of driftings is carried out efficiently by utilizing past collection results and visual observation and drift prediction. This paper summarizes the movements and recovery results of drifting objects that flowed into Tokyo Bay in large quantities and reports on the efficient drifting technology and the impact on future use of marine area.
