This is a pre-TOS era design from about 2250. It still needs some work and perhaps some more details. The ship is about 225 metres long and 11 decks high. Unfortunately I'm not the most experienced vector artist and don't have very good vector software on my computer (I had to use OpenOfiice Draw) so I may end up remaking it in another program.
My guess on the blue things is having nacelles of the JJ-prise/Kelvin style. Giant blue star destroyer boosters on the back of nacelles. Sure some of us fanboys think it's a crime suggesting these things are rockets, but it makes the nacelle more identifiable to those 'normal' people out there, that unfortunately need to come see these movies to make the money for the studios.
The blue things are some kind of plasma vent or something like that. Perhaps something like the blue grilles on the later ships. Since I first posted this I have remade everything so it is now more detailed.
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-Will