To provide a laver reticulated acid ship capable of satisfactorily acid-processing a laver net even if the medicinal solution is diluted by invasion of seawater.SOLUTION: The larva reticulate acid treatment ship 1 which acid-treats a nori mesh with a chemical solution comprises a treatment tank 3 provided with laver wrapping hoist winding devices 7, 8 for winding a laver net from the sea, a treatment tank 3 for supplying a chemical liquid to the treatment tank , A chemical solution circulating device 18 for circulating the chemical solution in the processing tank, a concentration detecting device 20 for detecting the concentration of the chemical solution, and a controller for controlling the concentration of the chemical solution circulated in the chemical solution circulating device And a control device 21 for supplying the chemical solution from the chemical solution supply device when the concentration detection device detects the fact. In addition, the processing tank can be partitioned in the front and back, the laver lapping device is arranged in each of the sections 5 and 6, and the chemical liquid is circulated between the front and rear sections by the chemical circulating apparatus.BACKGROUND OF THE INVENTION【課題】海水の浸入によって薬液が希釈されても海苔網を良好に酸処理できる海苔網酸処理船を提供する。【解決手段】海苔網を薬液で酸処理する海苔網酸処理船1は、海から海苔網を巻き上げるための海苔網巻上装置7,8を設けた処理槽3と、処理槽に薬液を供給するための薬液供給装置15と、処理槽に薬液を循環させるための薬液循環装置18と、薬液の濃度を検出するための濃度検出装置20と、薬液循環装置で循環させる薬液の濃度が低下したことを濃度検出装置で検出した場合に薬液供給装置から薬液を供給させる制御装置21とを有する。また、処理槽を前後に区画可能とし、各区画5,6に海苔網巻上装置を配置するとともに、薬液循環装置によって前後の区画間で薬液を循環させるようにした。【選択図】図1
