Simple fastening system for river-sea direct container ship

The utility model discloses a simple securing system for a river-sea direct container ship, which comprises an open cargo hold with a bottom plate provided with a container corner base, a bottom layer container is stacked on the cargo hold, and the upper and lower parts of the bottom layer container are respectively secured with an upper layer container and the bottom of the cargo hold through stacking cones; a middle-layer container is arranged in parallel to the cargo hold coaming, and all the containers between the middle-layer container and the top-layer container are connected up and down through full-automatic spin locks; the bottom container corners of the next layer of the middle-layer container adopt stacking cones, the left and right sides are cooperatively tied by adopting lateral supporters, the top container corners adopt full-automatic spin locks, and the left and right sides are cooperatively tied by adopting lateral supporters; the containers on the lower two layers of the middle-layer contain