Research And Analysis Of The Safety Of Navigation Of Tonggu Channel In Shenzhen Port

The Tonggu channel of Shenzhen port has been planed and argued for nearly twenty years. The steps of building the Tonggu channel have been speeded up in recent years, which is owing to the rapid increase in the number of ships to port and the handling capacity of cargo and containers. The Tonggu channel has to accept a "changed line project" in the end which is not so good for building and navigating because of the limitation of time and condition.In order to keep away from Hong Kong water area, the "changing line project" of Tonggu channel has to be arranged fold line as three sections. The south section of channel is just at the channel of Guangzhou port. The middle section of channel cuts the Tonggu shoal. The north section of channel connects with the channel of western part of Shenzhen port. Owing to the limitation of geographical condition, the design of middle and north sections of Tonggu channel exist some factors which are unfavorable for navigating.In the middle sections of Tonggu channel, ships will encounter water current's affection when they sailing in it, because the azimuth of channel and the course of water current cross a large angle. The same problem exists in the north section.The north section of Tonggu channel and the channel of western part of port of Shenzhen cross a large angle too, ships have to turn a large course at the joint of the two channels. At the same time, the joint of the two channels possesses both dense boat traffic and high speed water current. All the factors described above severely affect the safety of navigation of Tonggu channel.To ensuring the navigation safety of ships, it is necessary to evaluate the safety of navigation of Tonggu channel, in order that the result can be consulted by the manager designers and users of Tonggu channel. So Tonggu channel will become a safe and quick channel of western part of Shenzhen port.