What year did Lothar - Gunter Buchheim review " Das Boot " ?
Buchheim , himself a U-boat correspondent , attacked specifically what he called Petersen 's sacrificing of both realism and suspense in dialogue , narration , and photography for the sake of cheap dramatic thrills and action effects ( for example , in reality one single exploding bolt of the boat 's pressure hull would have been enough for the whole crew to worry about the U-boat being crushed by water pressure , while Petersen has several bolts loosening in various scenes ) .