After listening to a decorated United States Navy SEAL. In fact one of the original seal team 6 plank owners and hand-picked by Captain Richard marcinko himself.
My analysis is that the United States could have gotten away with this without leaving any evidence whatsoever and it just would have been a huge mystery. However that's not what happened instead of using the bare minimum of explosives in a shaped charge... Enough explosives were used to create massive explosions. Such a heavy-handed capability only comes from somebody who is technologically unprepared to do the job.
However this completely makes for a great blame game however I did post something recently about a merchant vessel that loitered in this area...
Then it went on to dock at St petersburg.
RE: THE WAR: Destroying the ‘Allies’ [eng/срп] РАТ: Уништавање ‘савезника’