Next phase of search operations set to begin , with underwater sonar drogues to be deployed . Search follows intensive sonar mapping of a huge area of seabed in the southern Indian Ocean . The ship , and two others which will arrive within the month , will conduct detailed sonar sweeps in an attempt to locate wreckage of the plane . Comment: Even after an intensive search , nothing was found .
Next phase of search operations set to begin , with underwater sonar drogues to be deployed . Search follows intensive sonar mapping of a huge area of seabed in the southern Indian Ocean . Comment: Even after an intensive search , nothing was found .