The river-sea engineering 33 bucket-type dredger is a self-developed construction vessel of our company, which has the of new equipment, strong digging capacity, and high performance and efficiency. It can directly excavate hard soil, clay, silty sandstone, fully weathered rock, strongly we rock, moderately weathered rock and other hard geological strata, and can directly excavate without blasting, with good performance and high yield. For high-strength hard we rock, it can also be equipped with our company's self-developed and patented high-frequency crushing hammer or hydraulic crushing hammer for pre-processing of rock and soil crushing, then carry out strong digging operations to meet the increasingly stringent environmental protection requirements. The ship's body is constructed with steel pipe piles for positioning, which has little impact on navigation. ship is equipped with a 3D imaging guidance system to assist in the excavation depth and an RTK positioning system. With the assistance of both systems, the accuracy of underwater reaches within 5cm, meeting various types of underwater construction requirements. Direct strong excavation of weathered rock refers to the strength: 27Mpa, high-frequency hammer auxiliary pre-processing of weathered rock refers to the strength: 40Mpa, hydraulic crushing hammer auxiliary pre-processing of weathered rock refers to the strength:60Mpa.