Originally I would've gone with the EEVs being at the bottom of the ship, due to the tubes appearing to be sliding down into lifeboat, but that doesn't fit with model we see when the EEV is launched. Based on the door and ladders, it looks like it's being launched out the side of the ship. There's a bunch of different factors that I haven't fully considered, but if I were to guess I'd put them midships above the conning tower and forward of the fusion torus.