PROBLEM TO BE SOLVED: To provide an attachment for a weeding boat capable of increasing a weeding function, and provide the weeding boat.SOLUTION: An attachment 20 for a weeding boat includes a weeding member 31 comprising a rod-like member for pulling weeds in the rear from the stern in the traveling direction of a boat 11, and a connection part 25 connecting a supporting bracket 23 with a base end side of the weeding member 31. The weeding member 31 extends from the connection part 25 downward and has a rod-like shape, and is provided in multiple pieces. The connection part 25 includes a spring hinge 26. The spring hinge 26 supports the weeding member 31 so that the tip of the weeding member 31 is vertically movable, and includes a first biasing member 29 for biasing the tip of the weeding member 31 downward.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2020,JPO&INPIT【課題】除草機能を高めることができる除草ボート用アタッチメント、及び除草ボートを提供すること。【解決手段】除草ボート用アタッチメント20は、ボート11の走行方向における船尾よりも後方にて雑草を抜くための棒状部材よりなる除草部材31と、支持腕23と除草部材31の基端側とを連結した連結部25と、を備える。除草部材31は、連結部25から下方に延びる棒状であり、複数設けられている。連結部25は、バネ蝶番26を備え、バネ蝶番26は、除草部材31の先端を上下動可能に当該除草部材31を支持するとともに、除草部材31の先端を下方に向けて付勢する第1付勢部材29を備える。【選択図】図4