To collect he pelagic larval and juvenile fish, several kinds of midwater trawling gear have been developed.1-4) A common disadvantage of these trawls is that depth of the net changes greatly by the towing speed. In order to overcome the disadvantages of these sampling trawls, Hu et al. 1) designed a new midwater trawl with a rigid square frame and a cambered V-type depressor (MOHT). It was confirmed that the net depth hardly changed at setting flow velocities (30-100cm/s) through the model experiment in a circulating water tank. In this study, we examined the hydrodynamic characteristics of the cambered V-type depressor in a circulating water tank and the towing performance of the MOHT with various towing speeds and warp lengths at Tateyama Bay.