The C-9979 Landing craft was a large landing craft used by the trade federation and the CIS to land Multi-troop transports and armored assault tanks from orbiting battleships to the planet's surface. They could carry large numbers of battle droids for planetary invasions. This ship is seen from Star Wars episode I: The Phantom Menace where they were used by the Trade Federation for the invasion of Naboo.
If you like this model, check out the 3D Printable version: https://www.thingiverse.com/thing:4778640