Das Boot film variations question.

[flag4]

..i was looking at the dvds on amazon and saw that there are 3 different editions of Das Boot. i have read/heard somewhere in a review there is a 6 hour version from the original TV version then there is the one i have:

Das Boot - The Mini Series (2 Disc Uncut Version) which comes in at 4hours 42mins approx. it also has the special feature interview. ( which is not that special coz it does not go on very long )

then this one;

Das Boot (Directors Cut) which comes in at 200minutes.

then this one:

Das Boot (Mini-Series) ( The Boat ) which comes in at 282 minutes - which is the same length as mine.

whats the difference between the two longer versions - is it just the packaging?

and...*hands together in praying style*...is there a 6 hour version - or am i just dreaming/praying