<;P>;PROBLEM TO BE SOLVED: To stabilize cultured shellfishes in washing and to surely hold and transport culturing cords hanging down the cultured shellfishes when performing cultured shellfish washing work on shipboard. <;P>;SOLUTION: Caps are each detachably attached on inspection holes 10 and 11 vertically set at the body front surface of the washing apparatus, a shellfish recovering hole having a shellfish stopper plate and a shellfish receiving tongue is formed in the middle of the bottom of a discharge shooter 25 attached on the outlet side 7 of the body 3, fixing projections are integrally formed on connecting pieces constituting endless belt portions 29 and 47 of a transporting conveyor 28 and a holding conveyor 46 so as to be alternately arranged facing each other, culturing cords hanging down plural cultured shellfishes are detachably attached on the transporting conveyor 28 from an inlet side 6 of the body to form to be transportable to the outlet side 7, and the cultured shellfishes sent to a washing surface 40 are held from upper and lower directions with the fixing projections set on the connecting pieces of the endless belt portion 29 and 47 and washed while being transported. <;P>;COPYRIGHT: (C)2011,JPO&INPIT