What are the Top Ten Sinkings in WW2 by a Sub?

[Mush Martin]

I was Just reading the thread Crab Walk where they are talking about
the sinking of Wilhelm Gustloff.

Many or assumably most of us are familiar with the worst sinking of the war

But my question is what are the top ten sinkings of the war.

list some nominees and we will put up a poll.

arguments should be supported with info.
So post a blurb on the sinking your nominating.

MM