The invention discloses a
deep sea node instrument laying device and laying method. The
deep sea node instrument laying device comprises a
computer control unit arranged on a surface ship, an
underwater power transmission and distribution unit connected with the
computer control unit and a surface ship power supply
system through multifunctional cables, and an
underwater robot connected with the
underwater power transmission and distribution unit. The
underwater robot comprises an OBN storage matrix, a plurality of propellers and a plurality of sensors, wherein the propellers are assembled on the OBN storage matrix and used for achieving
underwater navigation, and the sensors are distributed on the OBN storage matrix and used for monitoring the navigation state and the underwater environment. By means of the device, an aerial seeding type
operation mode is provided, high-precision continuous laying of the OBN on the
seabed is achieved, the laying speed of the OBN can be greatly increased, that is, the
computer control unit controls the
underwater robot to submerge continuously at a
constant speed in a
water layer which is a certain distance away from the
seabed, the OBN is controlled to be released continuously during constant-speed submerging, and therefore the
underwater robot can stably lay the OBN on the
seabed. And precisely sinking at a preset laying point position of the seabed along a parabolic path.