Ah, that was the answer to what was in it. Wheat apparently. That makes sense, hadn't seen confirmation of it, thanks.
- - - Updated - - -
The ship in the extreme upper right of the "After" picture on CNN looks capsized to me. I haven't heard anyone talking about it, but it seems to be some sort of passenger/touring craft that got hit by the wave generated from making that crater, and since it was shallow draft it rolled over.
Hydrodynamics is weird, it might flip one ship and leave another one just fine. The ships docked at the same pier had most of their hulls protected by the land, so the just shifted a little, but that little white ship took the full brunt of it and flipped.
Edit: Further down on that article it shows the capsized boat more clearly. There was nothing to absorb the blast between the warehouse and that ship, so although it was further away, it just got pulverized and flipped.