Sooooo, does this mean they will make the place an archaeological dig site and preserve it for years?
Doubtful. The ship would be the oldest thing in the area, by far - under it would only be riverbed. Whatever was built over it later on was probably razed when the World Trade Center was constructed.
However, it does all make sense to me. The terrorists had planned this a long, long time ago. Back when this ship, let's just call it The Black Rock for the hell of it, was sunk way back in the 1810s or so, the terrorists filled it to the brim with TNT. Then, the location of the ship was "lost"...but not really.
You see, Nixon knew exactly where it was - he even sent a couple of his young aides over to Saudi to confirm the location of The Black Rock.
After conforming the location of The Black Rock, plans for the construction of the Twin Towers was begun.
Oh, one more thing...the name of those two Nixon aides I mentioned earlier? Donald Rumsfeld and Dick Cheney.
It is so obvious, I am astounded no one else has come up with this.