In a Japanese shipyard, a tanker was converted so that a boom extended 250 feet off the starboard side through which the dredge pumped material out directly rather than going through hoppers.

• 日本的一家船厂改装过一艘油轮，把一个吊杆伸出右舷外250英尺。挖泥船就通过该吊杆把淤泥抽出去，而不用挖泥斗。