What really happened when the ship was flying from point A to point B?

What really happened when the ship was flying from point A to point B?

For this text:
, even as the darkness of space focused and narrowed ¨C became the shadow
of wings, the curve on vast surfaces ¨C the hulls of two huge ships
flanking them; thin, sharp, like a stretch of endless walls
Could you tell me that can I understand the above text in this way?(I
meant to find a picture of this ship named "The Two Sisters in Exile", but
nothing , so I drew a picture, at first , I thought it's hard to draw it,
but after I drew it , I understand what I drew, and I think you can
understand it basically - because my picture will help me ask this
question . and I hope you know as you look at the picture, you look at
these ships from above):
,even as when the ship named "The Tortoise in the Lake" was flying from
point A to point B(as I drew in the picture), it was getting closer and
closer to the dark space( space of darkness ) , and the dark space became
more and more narrow, and the darkness of space became more and more
focused - the darkness of space was caused by the shadow of wings(point E
, duplicating with point W and point F) and the shadow of the curve on
vast surfaces(Point S) ¨C because the hulls of two huge ships flanking
them(Point F,);and where the two huge ships flanking them is like a
stretch of endless walls(point W) ; and the walls(point W) is thin and
shap.
And here's my picture£¨not enough reputation to post images£©:
http://i.stack.imgur.com/906DU.jpg
I just have a thing about perfectionism more or less, so I just try hard
to understand what it means---for Im not so sure what the " focused " and
" flanking" means , then not sure what the whole sentence means.
Thank you in advance!
The context is :
"I see nothing," Dong Huong said, again. The ground rumbled beneath her,
even as her ears popped with pressure ¨Cmore laughter from The Tortoise in
the Lake, even as the darkness of space focused and narrowed ¨C became the
shadow of wings, the curve on vast surfaces ¨C the hulls of two huge ships
flanking them; thin, sharp, like a stretch of endless walls ¨C making The
Tortoise in the Lake seem small and insignificant, just as much as Dong
Huong herself was small and insignificant in comparison to her own ship.



Excerpted from Aliette de Bodard's novel "The Two Sisters in Exile"
partly(maybe you needn't read these words) :
Outside, everything was dark. There was only the shadow of The Two Sisters
in Exile, the dead ship that they'd been pulling since Longevity Station.
It hung in space, forlorn and pathetic, like the corpse of an old woman;
although Dong Huong knew that it was huge, and could have housed her
entire lineage without a care.
"I see nothing," Dong Huong said, again. The ground rumbled beneath her,
even as her ears popped with pressure ¨Cmore laughter from The Tortoise in
the Lake, even as the darkness of space focused and narrowed ¨C became the
shadow of wings, the curve on vast surfaces ¨C the hulls of two huge ships
flanking them; thin, sharp, like a stretch of endless walls ¨C making The
Tortoise in the Lake seem small and insignificant, just as much as Dong
Huong herself was small and insignificant in comparison to her own ship.
A voice echoed in the ship's vast rooms, harsh and strong, tinged with the
Northerners' dialect, but still as melodious as declaimed poetry.