To provide an acid treatment ship for a laver net capable of efficiently performing sufficient acid treatment with minimum deviation of a set pH value and an actual pH value in an acid treatment tank.SOLUTION: An acid treatment ship A of a laver net comprises at least: an acid treatment tank 15 for storing an acid treatment liquid； an acid stock solution supply device 40 for supplying a stock solution of the acid treatment liquid into the acid treatment tank 15； and a control device 50 for detecting a pH value of the acid treatment liquid in the acid treatment tank 15, actuating the acid stock solution supply device 40 based on the detection value, and controlling a pH value of the acid treatment liquid into a constant pH value. The acid stock solution supply device 40 comprises at least one bottomed tubular member 60 comprising a plurality of discharge holes for jetting an acid stock solution on optional positions on the acid treatment tank 15, the tubular member 60 has an inner diameter of 3-8 mm, the number of the discharge holes is 3-10, and a hole diameter of the discharge hole is 1.0-2.0 mm.SELECTED DRAWING: Figure 1【課題】設定したｐＨ値と実際の酸処理槽内のｐＨ値との乖離を最小限として、十分な酸処理を効率的に行える海苔網の酸処理船を提供する。【解決手段】本発明の海苔網の酸処理船Ａは、少なくとも、酸処理液を収容する酸処理槽１５と、該酸処理槽１５内に酸処理液の原液を供給する酸原液供給装置４０と、前記酸処理槽１５内の酸処理液のｐＨ値を検出し、その検出値に基づいて前記酸原液供給装置４０を作動させて、酸処理液を一定のｐＨ値に制御する制御部５０とを備えた海苔網の酸処理船であって、前記酸原液供給装置４０には、前記酸処理槽１５上の任意の位置に、酸原液を噴出する複数の吐出孔を有する有底筒状の管状部材６０を少なくとも１つ以上備えると共に、該管状部材６０は内径が３～８ｍｍであり、吐出孔の数が３～１０個であり、該吐出孔の孔径が１．０～２．０ｍｍであることを特徴とする。【選択図】図１
