Shallow sea submarine pipeline (cable) detecting and maintaining device

The invention relates to a new benthal pipeline (cable) detecting and repairing equipment ( for short repairing equipment), it is composed by main ship body, machine and pump cabin, thruster cabin, cab, alleyway, screw location anchor, adding(reducing) pressure cabin, repairing cabin, and main assistant thruster, pressure loading equipment, balance equipment, floating power regulating equipment, pressure equipment, detector equipment, life support equipment, repairing equipment and so on, the components correspond each other, under the controlling of program( surface, under water) complete the tasks of running after the objects, avoiding collision to roadblocks, submergence, location, sitting, charging and draining, dwelling, repairing, raising and other operations. The special structure of short and fat linetype , long and wide deck, flat-bottomed round bilge, symmetrical head and rear, scour protection skirt which is jointed around the bilge determines it can sit on argillo arenaceous seabed; the flexible repairing cabin and sealing equipment can form 'waterless space' to complete the repairing work of the benthal pipeline(cable); the sectional type inner and outer double cylinder structure high alleyway can exchange the circular air of the cabin.