The increasing scale of typhoons and the difficulty in predicting local downpours result in the flooding of rivers and sediment disasters, carrying massive quantities of debris, including driftwood, into the ocean. When such flows enter bays and seas largely encircled by land, debris can accumulate over long periods, which not only causes deterioration of the marine environment, but can have serious consequences for navigation. In this article I would like to introduce the marine environment maintenance vessels responsible for removal of drifting debris and floating oil and their various activities.
Selected Papers No.25