A sort of simulation algorithm of trajectory was presented,which can provide abundant data for the research of algorithm of strapdown INS.

Hygienic measures in promoting physio - psychological health of warship crew during voyage;

Weightiness Analysis and Calculation of Risk Formation Factors in Ship Navigation;

Risk Assessment and Risk Control Options of Ship Navigation;

On the basis of thorough investigation and argumentation of dangers in the Pearl River,the paper,as to the specialty of ship and complicated navigation situation of the Pearl River,puts forwards some technical concepts of comprehensive safety monitoring system for the sake of ensuring safe navigation.

During ship s sailing,working condition of main engine is vital,and lubricating is one of the most important facters.

Basing on the analysis of ship sailing process and traditional simulator technology, this paper set out three argumentations about the technology updating in this field, that is, synergetic simulation, virtual reality and distributed mode.

Compiling diagrams of standard system for ship navigation safety;

Analysis of present status of the Pearl River Estuary navigation safety and countermeasures for navigation control;

The risk analysis of navigation safety for the LNG carriers in Shenzhen port;

According to investigation on two accidents of collision,this paper analyzed the course of those two accidents,point out that the crewmember's irresponsibility and misunderstanding of navigational rules are main course of both accidents,emphasized that the shipowner shall give crewmember more training to upgrade their competent ability and increase their sense of responsibility.