A slow quiet action move -- but U-Boats - DUH
Movies are lies that speak to a larger truth. (quote from elsewhere)
They take real drama - from one incident which would be emotionally exhausting enuf - this isnt a comic book movie -
and swirl a bunch into a LONG movie. The tech details -- from all the "enigma acquisitions" is quite real - a ship is sinking... do u want it... how bad? no time to process.