Topic 1: Ocean Exploration
Marine instruments and sensors
Marine Geodetic Information System
Marine Surveying and Engineering
Coastal radar
Automatic control
Current measurement technology
LiDAR
Passive observation sensor
Buoy technology
Cables and connectors
Airborne and satellite radar, as well as synthetic aperture radar
Space system 
Data visualization
Data modeling and simulation
Marine GIS and Data Fusion
Information Management
Real time data quality monitoring
Ocean Dynamics Information Technology
Sustainable utilization of water resources and protection of water environment
Water energy application technology
Marine Geography
River, Lake, and Ocean Survey and Monitoring
Marine Biology
Marine Chemistry
Marine Ecology
Marine Meteorology
Ocean Engineering
Ocean Dynamics Information Technology
River, Lake, and Ocean Survey and Monitoring
Monitoring technology for marine plastics and microplastics
Intelligent Ocean Internet of Things Technology and Its Applications
Monitoring and Prediction Model for Marine Environmental Changes
Exploration and development technology of deep-sea mineral resources
Topic 2: Underwater Acoustics and Acoustic Oceanography
Sonar and Converter
Acoustic systems and metrological calibration
Sound propagation and scattering
Acoustic oceanography
Ground acoustic inversion
Bioacoustics
Seismic acoustics
The coherence and volatility of signals, etc
Topic 3: Communication Networks
Communication Theory
Telecommunication Engineering
Computer Networks and Data Communication
Information analysis and infrastructure
Theory and Practice of Communication Modeling
Wireless sensors and communication networks
Cloud computing and the Internet of Things
Network and Data Security
Optoelectronics and Optical Communication
Wireless/Mobile Communication and Technology
Intelligent Communication and Computing
Green Communication System
Satellite communication technology
Big Data and Communication
Microwave communication 
5G communication technology
Edge computing
Remote sensing and satellite communication
Wireless Sensor Network
Communication and Information Systems
Application and Development of 5G/6G Industry
Network and Information Security Technology
Communication Artificial Intelligence
Security and privacy, etc