With ocean currents, winds, etc., it seems vastly unlikely his contraption would have traveled any distance the ocean didn't allow anyway.
For those not familiar with U. S. geography, New York is north of Florida, not south.
Given that this is his third/fourth attempt at hamster wheeling in the Atlantic they probably knew exactly who it was when they got the call.
The imploded submersible guy was well known in the industry to be cutting corners and playing fast and loose, but had done successful dives in the past, and had a boat there to support him. Playing fast and loose in a sub will eventually get you killed -- and it did -- but there was at least something of a track record.
> Officials said he refused to step off the vessel and threatened to kill himself. He also claimed that he had a bomb on board, according to court papers.
Fortunately he did not actually have a bomb on board.