PROBLEM TO BE SOLVED: To provide a tugboat for sweetfish fishing that even if in a condition that an angler puts his/her hand on the main body of the tugboat, the hand can open and close a lid.SOLUTION: A tugboat 10 for sweetfish fishing comprises: a tugboat main body 11 that a housing chamber 37 and a water passage 17 are sectioned inside a lid body 14 which can move relatively for the tugboat main body 11 between a behind position and a front position, and can rotate between a releasing posture and a blockage posture a lock unit 41 engaging to the tugboat main body 11 at a time that the lid body 14 is in the blockage posture and in the behind position, and releasing the engagement with the tugboat main body 11 at a time that the lid body 14 is in the front position and an operation unit 45 which can change phase to a restrict condition restricting the lid body 14 in the behind position and to a permissive condition permitting shift of the lid body 14 to a cross direction.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】釣人が曳舟本体に手を掛けて持ち上げた状態であっても、当該手で蓋の開閉を行うことができる鮎釣用曳舟を提供する。【解決手段】鮎釣用曳舟10は、収容室37及び通水路17が内部に区画された曳舟本体11と、後方位置及び前方位置の間を曳舟本体11に対して相対移動可能で且つ開放姿勢及び閉塞姿勢の間を回動可能な蓋体14と、蓋体14が閉塞姿勢で且つ後方位置のときに曳舟本体11に係合し、蓋体14が前方位置のときに曳舟本体11との係合が解除されるロック部41と、蓋体14を後方位置に拘束する拘束状態、及び蓋体14の前後方向の移動を許容する許容状態に状態変化が可能な操作部45とを備える。【選択図】図4
