Question: What year did Lothar-Gunter Buchheim review "Das Boot"?
About the article "Das Boot", section "Criticism by novelist Buchheim".

Candidate passages:
Lothar-Günther Buchheim () (February 6, 1918 – February 22, 2007) was a German author and painter.
He is best known for his novel "Das Boot" (1973), which became an international bestseller and was adapted in 1981 as an Oscar-nominated film. 
Das Boot is the German war film written and directed by Wolfgang Petersen from 1981.
Das Boot (, "The Boat") may also refer to:  Das Boot (novel), novel by Lothar-Günther Buchheim from 1973  Das Boot (song), title theme to the film, composed and produced by Klaus Doldinger; 1991 covered by U96  Das Boot (album), first album by the German dance group U96 from 1992  A plot device in the 2006 comedy movie Beerfest, also known as a Boot of beer  
  "Das Boot", a 1981 German movie by Wolfgang Petersen based on the Lothar-Günther Buchheim novel of the same name  "Boots" (film), a 1919 American silent film starring Dorothy Gish and Richard Barthelmess - see list of films shot in Riverside, California  "Boots", a poem by Rudyard Kipling  Bootleg recording, unauthorized audio or video recording, often abbreviated to "boot"  "Boots", an episode of the television series "Teletubbies"   
Even though impressed by the technological accuracy of the film's set-design and port construction buildings, novelist Lothar-Günter Buchheim expressed great disappointment with Petersen's adaptation in a film review published in 1981, especially with Petersen's aesthetic vision for the film and the way the plot and the effects are, according to him, overdone and clichéd by the adaptation.
He also criticised the hysterical overacting of the cast, which he called highly unrealistic, while acknowledging the cast's acting talent in general.
Buchheim, after several attempts for an American adaptation had failed, had provided a script detailing his own narrative, cinematographical and photographical ideas as soon as Petersen was chosen as new director.
It would have amounted in full to a complete six-hour epic; however, Petersen turned him down because at the time the producers were aiming for a 90-minute feature for international release.
However, today's Director's Cut of "Das Boot" amounts to over 200 minutes, and the complete TV version of the film is 282 minutes long.
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).
Buchheim also criticized depictions of the crew's loud behaviour during patrols as unrealistic and celebrations after achieving a torpedo hit or surviving a bombing as unprofessional.
Furthermore, an officer—even an outsider like Lt. Werner—would have commanded special respect and that throwing an oil-drenched towel into his face would not have been tolerated.
Uttering concerns about the end result, Buchheim felt that unlike his clearly anti-war novel the adaptation was "another re-glorification and re-mystification" of the German World War II U-boat war, German heroism and nationalism.
He called the film a cross between a "cheap, shallow American action flick" and a "contemporary German propaganda newsreel from World War II".
German submarine "U-96" was a Type VIIC U-boat of the German Navy ("Kriegsmarine") during World War II.
Her keel was laid down on 16 September 1939, by Germaniawerft, of Kiel as "Werft-Nummer 601".
She was commissioned on 14 September 1940, with "Kapitänleutnant" Heinrich Lehmann-Willenbrock in command.
Lehmann-Willenbrock was relieved in March 1942 by "Oberleutnant zur See" Hans-Jürgen Hellriegel.
He was relieved in turn in March 1943 by "Oblt.z.S.".
Wilhelm Peters.
In February 1944, "Oblt.z.S."
Horst Willner took command, turning the boat over to "Oblt.z.S."
Robert Rix in June of that year.
Rix commanded the boat until February 1945.
As part of the 7th U-boat Flotilla, stationed in Saint Nazaire, on the French Atlantic coast, "U-96" conducted 11 patrols, sinking 27 ships totalling and damaging four others totalling 33,043 GRT.
She also caused one vessel of 8,888 GRT to be declared a total loss.
The boat was a member of eleven wolfpacks.
On 30 March 1945, "U-96" was sunk by US bombs while in the submarine pens in Wilhelmshaven.
In her entire career, she suffered no casualties to her crew.
The boat was also known for its emblem, a green laughing sawfish.
It became the symbol of the 9th Flotilla after Lehmann-Willenbrock took command in March 1942.
During 1941, war correspondent Lothar-Günther Buchheim joined "U-96" for a single patrol.
His orders were to photograph and describe the U-boat in action for propaganda purposes.
Over 5,000 photographs, mostly taken by Buchheim, survived the war.
From his experiences, he wrote a short story, ""Die Eichenlaubfahrt"" ("The Oak-Leaves Patrol") and a 1973 novel which was to become an international best-seller, "Das Boot", followed in 1976 by "U-Boot-Krieg" ("U-Boat War"), a nonfiction chronicle of the voyage.
In 1981 Wolfgang Petersen brought the novel to the big screen with the critically acclaimed, "Das Boot".