CNN New Day March 24, 2014 10:32:00
Ideally around about 500 feet for the visual search. however, if required we will go down to 200 feet. >> weather conditions out here change in a split second. one moment almost zero visibility. the next, the fog vanishes and its clear for miles. either way ocean as far as the eye can see. >> hopefully today will be the day that we find something. >> they use high tech radar and special cameras to search the oceans surface, but it comes down to something very low tech, simply looking out the win...
Source: archive.org