Well, its a military warship. A great deal of sci-fi series like Star Trek tend to have less of an emphasis on military might unless its by some Deus Ex alien power ala Independence Day.
Not necessarily true. Yes, Star Trek is a Jacques Cousteau in Space scenario, but various other series/books provide us with warships.
Babylon 5, Space AAB, Battlestar Galactica, etc....
I just get so tired of hearing, "....the turbolasers on my Imperial Star Destroyer shoot 650 gigaton beams that can kill any Galaxy class Starship or Omega class Destroyer with one hit....", thankfully the community here is much more mature!