Apparatus for improving accuracy and deploying a load at an underwater target location and method for controlling such an apparatus

摘要

The positioning system (50) attaches to the lifting wire (42) and comprises a main module (51) and a counter module (52), each provided with thrusters (56) to control the positioning of an attached load. An attached processing system takes input from an acoustic source and a sound velocity meter, to take account of acoustic rays bending as velocity changes with depth, on the apparatus to control the thrusters and position the load at its required underwater position : Independent claims are also included for the following: (a) A processing arrangement arranged to drive an apparatus for deploying an object to an underwater target position; ( A vessel provided with a processing arrangement arranged to drive an apparatus for deploying an object to an underwater target position; ( A method of driving a processing arrangement arranged to drive an apparatus for deploying an object to an underwater target position; ( A computer program for carrying out a method of driving a processing arrangement arranged to drive an apparatus for deploying an object to an underwater target position.