Applied the theory of manoeuvre capability , the paper analyses and calculates the characters of ship movement in the bridge area based on the data of practical experiment and provides the systemic method of pilotage to help pilot when guide vessel in the bridge waters 本文以实船试验为依据，运用操纵性理论，分析、计算船舶在桥区的运动情况，提出系统的桥区引航方法，为驾驶员在桥区操纵船舶提供理论基础。
Depending on our leading experts & intensive good relations with local port authorities , government inspection & local clients , we are confident to render our best service to you good principals in promptness & efficiency 我们和海关、动植检验、海事、边防等联检单位、港口码头、长江航道养护局、引航、船检、轮驳公司等协作单位以及在长江口岸（尤其南京港）进出口的国内外客户和船东保持着良好的关系和拥有较高的信誉。
Qinjiatuo bridge for three gorges project is a super bridge over the approach of the sea - route on lower reaches of the temporary lock . the bridge is 303 . 10m in length . the bridge is the heaviest - loaded bridge in asia at present , whose design loads are automobile - 135 and trailer - 660 三峡工程覃家沱桥为横跨临时船闸下游引航道的一座特大桥，大桥全长303 . 10m ，设计荷载为汽? 135级，挂? 660级，为目前亚洲第一重载桥。
Article 35 after quarantine inspection on an exit vessel is completed , no persons other than the navigation pilot and those approved by the health and quarantine organ shall be allowed to go on board the vessel , no loading and unloading of luggage , cargo or postal parcels shall be allowed 第三十五条对船舶实施出境检疫完毕以后，除引航员和经卫生检疫机关许可的人员外，其他人员不准上船，不准装卸行李、货物、邮包等物品。
The pattern of flow of lower lock approach is usually complicated due to the influences of the interaction of flow underpoured from different locks . generally , physical model is applied to study the current field for the case of irregular boundaries and complex flow pattern 由于受多线船闸下泄水流相互作用的影响，船闸下游引航道非恒定流流态十分复杂，对于此类有复杂流态的非恒定水流运动问题一般采用物理模型进行研究。
The research provides with the reference for the pilots and captains on safe control of the vessel maximum velocity with tugboat assistance . it brings forward a new research field in safety assessment of vessel operation , and a new idea to develop the ship - handling simulator 本文的研究结果为引航员和船长安全地控制拖轮助操工况下本船的航速提供了参考依据，为船舶操纵安全评估提出了新的研究方向，也为船舶操纵模型器的研制与开发提供了新思路。
