The utility model relates to the technical field of
underwater cable laying equipment, and provides an
underwater cable laying ship which comprises a ship body, a ditching mechanism is movably installed at the
tail end of the ship body in the advancing direction, a wiring
assembly is installed on the ditching mechanism, and a wire pressing
assembly is movably installed on the side, away from the ditching mechanism, of the wiring
assembly. A cable conveying mechanism is installed on the ship body, and a cable conveyed by the cable conveying mechanism penetrates through the wiring assembly and is located between the wiring assembly and the wire pressing assembly. A
silt collecting and backfilling mechanism is further installed on the ship body, the collecting end of the
silt collecting and backfilling mechanism corresponds to the ditching mechanism, and the backfilling end of the
silt collecting and backfilling mechanism is connected to the end, away from the ditching mechanism, of the wiring assembly. According to the utility model, integrated operation of
underwater ditching, cable wiring and landfill can be realized.