Das Boot is not fiction - Its based on the log book and the survivers storys from the boat -
What you c in the movie really happend during the war for that sub - Thus its compressed into one war patrol is it the most realistic submarine movie ever.
The directors cut wich last over 4 hours is the one to see
Who will ever forget when Capitain Thomsen on his celebration of his iron cross after he pukes on the toilets in the bar, saying :
I am not in a conditon to *******, Sieg heil
.