The Lost Ship

The Captain and his men are looking at the atrange ship.
'Hello. Is there anybody there? Can you hear me?'
But there is no answer.
The Captain and two men row across to it.
There is nobody on the ship.
The ship's log book and a photograph are on the table in the ship's cabin.
The log was written by him, and the photograph is himself.
The Captain see nobody on the ship. He was alone.

I didn't understand the history too much.
Did he die or not??
But, this bok was interesting for me.