Actually TMP never really gave us a good look at the full-sized shuttlecraft glimpsed in the hangar-bay matte painting. But in Mere Anarchy: The Darkness Drops Again
, I gave them their day in the sun and showcased their modular design as shown in this Andrew Probert sketch
However, in Ex Machina
, I also featured the torpedo-shaped shuttle Matt Jefferies designed for Phase II
as an extra-maneuverable atmospheric shuttle. So it's plausible the ship could've had other shuttle classes aboard.