Google "Southern Ocean" and get back to us.
I get how large it is. I also get that satellites record data (huge volumes of data) that do not involve a person looking at a screen like they are watching television.
They do not “turn off” satellites that watch the world when they are over “nothing interesting” and with the server farms the NSA has I simply wondered if there was not relevant data that may have been recorded somehow or somewhere. Simple thought and yes I realize that satellites “do not see everything” and are most often focused in on a specific area. I accept the “vast expanse” theory and said the same thing at the time - something to the effect of “without a military radar or satellite observing something we may never find it because it is so big.” Just never had an answer that seemed any more informed than my own speculation. Sometimes FR provides a surprising answer.
I am sure they tried...... however, with satellite imagery of my own home via google where I can see my vehicles on the property we can only guess how good (and comprehensive) our latest imagery satellites are.