


Warp Speed is partially set by hull shape (Warp Geometry, or whatever they claim) and it seems the Galaxy has better speed and endurance. Of course if they really wanted to make the Galaxy multi mission they should have used different saucers for each mission.Īnyway, the Nebula has just a hair less firepower (fewer phasers), but has greater forward firepower with 2 torpedo launchers (Sutherland subtype). The mission pod might be easier to replace if they use a standard connection (which most are like the Sutherland). But even the Nebula should have this option. Supposedly the internals on the Galaxy are interchangable and that is what allows it to act multi-mission. Its about the same relative internal volume. But you have the mission pod and the neck attaching the pod. The drive section is a little different in shape. The Nebula class is just about the same size as the Galaxy. You'd think that they would have been more common in those big fleet shots, but it seems the CGI guys were too lazy to do anything but spam a shitload of Galaxys and Excelsiors and shit. Oddly, we never saw very many Nebulas in DS9. You can fill those out with some yard time (or possibly even just loading it into the ship's cargo bay and having the crew put it together en route, if need be and possible), and the base doesn't have to store a bulky external module or a bunch of hull plating with which to reassemble a big external module - it just has to store crates of equipment and infrastructure, a lot of which it would need to anyway for starship repair and overhaul.

The thing about the Galaxy class (and to at least some extent, probably the Nebula as well) is that it already has a lot of "modular" space built into the saucer for expansion or mission-specific configurations. It seems more likely to me that the Nebula is less a "swappable module" ship and more just a common, cheaper design that's easily produced in different subtypes that are best suited to certain roles. There's also the Melbourne type which has two miniature warp nacelles up there! These various types don't seem very swappable to me. Look at the module pylons for the Phoenix vs the pylons for the Farragut - they're totally different. I'm not so sure the Nebula is quite as adaptable as advertised. When they went to CGI for the Nebula class, however, the modelers basically just kitbashed the Galaxy parts at 1:1, substantially increasing the volume of the ship. The engineering section is also subtly different in shape, and certain details (like the nacelle pylon phaser strips) appear proportionally larger than on the Galaxy class. I think there are minor details on the saucer that are also supposed to suggest this. The Nebula was originally conceived of as being significantly smaller than the Galaxy, which I think is kind of suggested by both The Wounded and First Contact.
