The present invention relates to a real-time marine grab dredging system. The real-time marine grab dredging system enables accurate level management and angle management, prevents secondary pollution caused by a sludge leak when lifting a bucket, prevents over-cutting and enables flat cutting even on an inclined surface, accurately checks a center photographed image obtained by photographing the seabed surface at the center of a grab descending to the seabed and a surrounding photographed image obtained by photographing the seabed surface around the grab in real-time in a control room to accurately identify a practical dredging state in real-time, thereby accurately performing a desired dredging work in real-time. In addition, a GPS transceiving unit is formed on the upper end of a crane of a dredging vessel to construct a position management system capable of identifying a dredging position to enable accurate dredging, information is shared via a wireless communication network between fleets, a remote control is enabled, and a dredging area drawing is shared if the dredging area drawing is changed in a control ship to enable accurate dredging.;COPYRIGHT KIPO 2020
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