In the fictional universe of
David Brin's
Uplift series, a sneakship is a small starship designed entirely for stealth. It is capable of effectively cloaking itself, as it is transparent to most types of long- or medium-range detection devices, including standard visual senses. Sneakships, like most Galactic craft, are of similar designs no matter what race uses them.
Sneakships are best known for their role in transporting fugitives from the Five Galaxies to the fallow world of Jijo.