Plane positioning control system for underwater projects;

Detecting technologies for underwater projects and its application;

Detection of hidden defects of underwater projects by the ground penetrating radar;

Tasks and conditions of project supervising in the underwater engineering;

Application of sensorless BLDC motor in the field of underwater engineering

This paper introduces the requirements for the selection of raw materials in the construction of underwater engineering, expounds the performance and design of mix proportion of the tremie concrete, and probes into the reasons of the common accidents of the tremie concrete and the settlement measures.

To reveal the effects of flooding on underwater photosynthesis of riparian plant species Salix variegata Franch.

An anlytical formula for underwater spot spread in the seawater is got from the equation for the light transmitting in media, which can interpret underwater spot spread in seawater with different water quality and different depth successfully.