I thought for a hopeful moment that the boat spotted by the Maersk ship might have been the French boat from a few days ago -- that was in the same general area (1,000 miles east of Cape Cod). But the French boat had twin rudders. This certainly looks like the First 40.7.

http://sailboatdata.com/viewrecord.asp?class_id=3158

The First 40.7 was introduced in 1997 (according to sailboatdata.com) so this one could have seen 15 or so years of service?
The news stories say the crew was looking for a source of water being taken aboard. Guess we now know. If they didn't have the life raft ready in time, it's unlikely they could have deployed it once the boat began to go over. The PLB signals might have been from individuals swimming.

I hope things have changed, but back in the days I was doing keel-bolt calculations, the formula and procedure was the Lloyd's method used for long chunks of ballast anchored to the bottoms of full-length keels. Quite a different moment situation from a fin with a bulb . . . not to mention the potential for flexural stress on the hull around the attachment point. Fiberglass is not immune to fatigue.
Very sad.