This article summarizes the four main stages of the development of international ocean scientific drilling: deep sea drilling project, international ocean drilling program, integrated ocean drilling program and international ocean discovery program, and introduces the main scientific achievements obtained during each stage. China also participated in the above stages, leading four voyages across three ocean scientific drilling projects, and achieved a series of scientific achievements in the South China Sea. The development of international ocean scientific drilling is closely related to the development of ocean drilling vessels. The development of worldwide ocean scientific drilling equipment is chronologically introduced with a focus on the technical characteristics of China's first ocean scientific drilling vessel, the “Mengxiang”. Finally, the development of the ocean scientific drilling technology is analyzed based on the development history of the ocean drilling and the update and iteration of the ocean drilling vessels. It can provide references for the development of the international ocean scientific drilling.

There i no engineering case for the application of the azimuth thruster on the icebreaking oceanographic research vessel which can meet the requirements of the lower underwater-radiated noise yet. The suggestions on the control of the underwater noise for the azimuth thruster and the most up-to-date technologies for the simulation and calculation of the pod noise are proposed based on the investigation and analysis of the technical application characteristics of the azimuth thruster and the application in full-scale ships, combining with the highest underwater noise requirements in the DNV·GL and CCS rules. It provides reference for the integrated selection and the design of the azimuth propulsion system equipped on the icebreaking oceanographic research vessel under the higher requirements of the underwater-radiated noise.