Yan Kuichen Shenyang Institute of Automation, Chinese Academy of Sciences

Yuan Xueqing Shenyang Institute of Automation, Chinese Academy of Sciences

Qin Baocheng Shenyang Institute of Automation, Chinese Academy of Sciences

With a view to deploying the guidance ropes to the faulty ships under

the severe sea state and carrying the life rescue rings to the

dropping people quickly, we have developed a rescue surface vehicle

which could tow the guidance ropes and life rescue rings. This

vehicle would possess with the characteristics such as strongly wave-

surge resistant capability, small volume, light weight, high speed,

and dexterous flexibility. When the rescue vehicle accomplishes the

task to send the guidance rope, the rescue ship or the faulty ship,

depending on the specific conditions could recover it. The life

rescue rings would be sent to the dropping people by the rescue

surface vehicle; the rescue people may save the dropping people and

recover the rescue surface vehicle, also depending on the actual


The control system for the rescue surface vehicle would consist of

both surface operation part and vehicle motion control part; the radio

telecontrol mode would be used for the communications between two

parts; the vehicle motion in water would be telecontrolled by the

manipulator; this paper pays attention to discussing some problems

involved in design of control system and communication system.

To overcome the impact from large surges, high waves, and strong

current under the severe sea state, the rescue surface vehicle has

adopted the upper-lower double-body isolated structure with the stream

line type.

Because the rescue surface vehicle has to tow the guidance ropes or

life rescue rings under the severe sea state, It is vital for us how

to choose the most suitable for propulsion of this vehicle. So we

have done a series of experiments about relations among drag and

different shapes and speed, and we get drag curves under different

speed and effective power required for vehicle, according to these

experiment results, we modify theoretical calculation results and

match with the most suitable propulsion.

Through ocean experiments the following several basic results are

drawn, these experiment results refer to stability, operability and

surface towing capability. For the applied ranges of the rescue

surface vehicle, it is not only applied to carrying the ropes, sending

life rescue rings, emergent rescue, and transferring major goods and

materials under the severe sea state but also to the other applied