From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Slugg's Spaceship was incredibly large, purple, and appeared similar to a giant bug.
Slugg's Spaceship appeared in Dragon Ball Z: Lord Slug. It was used to travel around Slugg's empire. The ship contained very advanced equipment, such as pods that could Terra-Freeze planets. It also contained small machines that walked on four legs and used large hose-like drills to apparently gather resources. Slugg's Spaceship was destroyed when Giant Slugg fell on it after Son Goku had attacked him.