Class 9 torpedo
The class 9 torpedo was a type of photon torpedo used by  starships. 

 had a number of class 9 torpedoes in its weapons manifest in 2375. After the ship was consumed by a bioplasmic organism, colloquially known as a "telepathic pitcher plant", Qatai thought that "if we can bring [Voyager] deeper into the creature's digestive tract and detonate one of these charges, we might be able to destroy it." ()

See also 
 Class 5 torpedo
 Type 6 photon torpedo
 Class 6 warhead
 Class 10 photon torpedo

Explosive weapons
Classifications