[Amberdawn]

—SIGH— Go to the Oceaneering website and see how THEY conduct a search. I’m sure you’ll agree it’s POOR planning.

[skeptoid]

Sorry, my dear, (I assume you are female) you lose again.
And it looks like you haven't taken the time to understand the differences here.

The Oceaneering site is quite impressive, but they proudly claim their record ROV ultra deepwater drill support depth record is only 3185 meters (10450 feet).
The Bluefin 21 came back from 4500 meters (14,764 feet), which is 1315 meters (4314 feet) DEEPER!! And there was no indication that it can't go deeper than that, only that it was programmed to abort at 4500 meters on that mission.

Please pause to contemplate we are talking 8/10ths of a stature mile DEEPER than the Oceaneering's record claim.

Again, we are comparing tethered ROV's with autonomous subs.
Deepwell, dredging,pipeline and BOP services v.s. an autonomous imaging sub. Two totally different services. The Bluefin 21 does only imaging and data collection. Their ROV's actually install and repair things with real time imaging. But Bluefin 21 operates at MUCH deeper depths.

You are in a hole, and you keep digging it deeper and deeper.

[skeptoid]

Oh, and please give me the page that explains their “search” techniques. Nothing like that really jumps right out atcha.