S.M.:
The Nostromo has three decks - A, B and C. Plus Graham is a friend of mine, who has spent years researching this kind of thing. Ditto Darrell Curtis. As have I.
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And I. (Say Hi to Darrell for me next time you see him). And several others I am sure both you and I could name.
I do depart from the "established fandom" view on many points, mainly because I insist on sticking with the movies. That the sets were built on three distinct "levels" to depict various levels of "posh-ness" for want of a better word, is a well-known fact. But this does not necessarily extend to that the ship has three deck levels.
Why?
Because it is never said in the movie that she does!
Instead, there is evidence to the contrary: when Ripley on her way from the Bridge to the Infirmary descends a ladder. There the film gives her no reason for her to have made a detour on the way, so the only reasonable explanation is that the "A-Deck" set actually depicts multiple decks on the ship.
As we all know -- a set is just a convenient assembly of locations to shoot a movie, not a full-scale model. "Reality" may well differ from the sets.
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While the Nostromo set and Nostromo model has all the issues of any sci-fi spaceship, I'm not seeing anything here to convince me that these plans are more accurate than the ones Graham published.
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Apart from the above ... if we follow Ripley running from Engineering towards the shuttle after failing to abort the self-destruct, she turns left upon exiting the control room. In the movie, upon approaching the shuttle access, she follows a corridor that curves left, and the final junction to the shuttle access is also a left turn.
However, in Grahams version, she'd end up going right at the shuttle access.
Just as an example.
All I claim is my deck plans are at least more screen accurate -- because to me, screen accurate matters. To Graham, it does not, at least to the same degree.
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Also a lot of stuff claimed to made up by fans is taken from the Colonial Marines Technical Manual.
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You do know where the CMTM came from, don't you? One of the biggest fan endeavours in the history of the whole ALIEN property! Great job, doubtless, but it was still all a fan effort.
But they, too, did get some things irrefutably wrong -- for instance the Vasquez pistol issue I highlight in
this thread.
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The script, film, Ron Cobb concept art all reference and depict three decks.
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This is as far as I am aware the only concept by Cobb that goes into that kind of detail -- the Leviathan.
And as far as I am concerned -- just looking at those pictures -- the Leviathan is
not the Nostromo.
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I think these are great deck plans for something other than the Nostromo.
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That, in the end, must then come down to opinion ... of which each of is entitled to our own, of course.
These
ARE the Nostromo, unquestionably ... for
me.
I offer them to the community, in case they can be for anybody else, as well.