The implosion would have lit off alarms, which is a known signature all the way back from the Thresher. They knew something imploded, they knew the approximate area it occurred in.
The moment Oceangate reported publically the sub was missing the US Navy quickly put 2 and 2 together and knew that was what exploded.
Biden used it top cover his criminal son’s news activity by allowing this horrible drama to play out at the cost of taxpayer dollars.
Maybe, but this was a composite hull, not steel, and was at 12000’ depth, so not necessarily where we normally look for and maybe not the same signature. Anyway, what would it matter? The media would still divert from the Hunter/Joe stories regardless. If not this, then something else.
The implosion of this carbon-fiber vessel would not produce anywhere near the same kind of sound that an almost 300-foot long steel submarine would produce. It's a bottle rocket compared to a Saturn V. I would not say the Ocean Gate vessel has much of a "known" acoustic signature, either. It's likely the SOSUS arrays detected something like an "anomaly consistent with an implosion" in the vicinity, but the ocean is big, and you can't go hunting down every little noise anomaly you might detect. It's possible the Navy didn't even know this expedition was going down.