Directly affiliated to the State Oceanic Administration (SOA), the Second Institute of Oceanography (SIO) was established in 1966 and has developed into a non-profit oceanographic research institute with comprehensive disciplines, strong scientific and technological capabilities and advanced equipment support. It is mainly engaged in marine scientific researches on China seas, oceans and polar regions as well as the R & D and application of high technology for marine environmental protection and resources exploration. 
       At present, SIO has the only state key laboratory within the SOA system -- State Key Laboratory of Satellite Ocean Environment Dynamics and 3 key laboratories funded by SOA, and a Marine Academy of Zhejiang Province co-built with Zhejiang Province. In addition, SIO is also supported by some technological service institutes and systems, including center for testing and measurement, center for marine standard materials and marine scientific and technological information center as well as the analysis and testing base inLin’an. 
       The research areas of SIO cover 5 research fields, including submarine geosciences and deep-sea exploration technique, ocean dynamic processes and numerical simulation, satellite oceanography and marine remote sensing, marine ecosystem and biogeochemistry as well as engineering oceanography. These five research fields have derived into 19 research directions, which have basically formed our own scientific innovation system and scientific research group that can meet our country’s great demands and help us gain a foothold in the world marine scientific and technological development.
       The 4500-tonner marine scientific research vessel “Xiang Yanghong No.10”, co-built by SIO and Zhejiang Taihe Shipping Co., Ltd, was listed in the National Oceanographic Research Fleet in 2014 and then undertook China’s ocean mineral resources investigation task in the southwest Indian Ocean in 2015, thus satisfying multidisciplinary research needs for deep-sea marine sciences. In the meantime, SIO also has the equipment research base in Changzhi Island of Zhoushan City, which has the ability for deep-sea exploration and development.
       At present, there are more than 400 staff in SIO, including 2 academicians of Chinese Academy of Science (CAS), 3 academicians of Chinese Academy of Engineering (CAE), 3 senior specialists at Zhejiang Provincial level, 90 senior professional technicians, 136 associate professional technicians and a group of influential academic leaders, thus forming a team of high-quality, high-level and high-skilled talents for marine science and technology.
       SIO now has 3 national-level first-class qualification certificates for marine engineering survey, marine engineering design, marine surveying and mapping respectively. SIO has also passed China Metrology Accreditation (CMA )qualification certification and ISO 9001: 2008 Standard Certification. In the meantime, SIO is also responsible for editing and publishing a comprehensive domestic academic core journal “Journal of Marine Sciences”.
       At the beginning of the Thirteenth Five-Year Plan and in front of all the opportunities and challenges, SIO will continue to improve academic innovation ability, enhance scientific research level, further build itself into a scientific and technological think tank that can meet the great demands of our country and become a growth cradle for leading talents in the field of marine science so as to make new contributions for the development of marine undertaking in our country.