PROBLEM TO BE SOLVED: To suppress or prevent from the attachment of an acid undiluted solution to a laver net.SOLUTION: A box ship comprises: an acid treatment tank for storing an acid treatment solution in which an acid undiluted solution is diluted and a winding roll which is provided in the acid treatment tank and winds up a laver net to which laver is attached, further comprising an undiluted solution discharge portion for discharging the acid undiluted solution into an acid treatment liquid of the acid treatment tank, and an undiluted solution supplying portion for supplying the acid undiluted solution to the undiluted solution discharge portion.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】酸原液が海苔網に付着することを抑制あるいは防止する。【解決手段】酸原液が希釈された酸処理液を貯留する酸処理槽と、該酸処理槽内に設けられ、海苔が付着した海苔網を巻き取る巻取ロールとを備える箱型船であって、酸原液を酸処理槽の酸処理液内に吐出する原液吐出部と、該原液吐出部に酸原液を供給する原液供給部とを備える。【選択図】図1
