VOY Manual · Chapter 2 · A Technical Introduction
2.40 Ferengi Ships
Describes Ferengi Marauders, their matter/antimatter propulsion, and their energy/wave weapon and photon torpedoes.
Ferengi ships are called Marauders, powered by matter/antimatter reactors very similar to (and probably copied from) older-style Federation starships. Some Ferengi Marauders are equipped with a very powerful energy/wave weapon (seen in “The Last Outpost”), while others are armed with some kind of photon torpedoes.