Plasma torpedo
The plasma torpedo was a type of plasma weapon that was used by a variety of different species throughout the Milky Way Galaxy.

Such torpedoes were used by various military forces, including those of the Romulans, the Cardassians, and the Kazon.

In 2259, the Kiley used very primitive plasma torpedoes to attack the . Captain Christopher Pike described them as "21st century tech." This was a surprise to him since he was under the impression that Kiley were warp-capable and wouldn't use such antiquated technology. ()

A far more advanced plasma torpedo was first encountered by Starfleet when a Romulan Bird-of-Prey destroyed several of the Federation's outposts near the Romulan Neutral Zone. The weapon expended large amounts of energy, forcing the Romulan vessel to decloak in order to fire, and limiting the vessel's operational range. Upon detonation, the torpedo unleashed an enveloping energy plasma, forcing an implosion in the target. The weapon had a limited range, as the plasma effect dissipated after a few minutes of faster-than-light travel. () The Romulans assaulted the Enterprise in 2267 with plasma weapons, scoring several direct hits. ()

In 2375, the Romulan Star Empire constructed a hospital for its wounded on the Bajoran moon Derna. In addition to the hospital, the Romulans also deployed seven thousand plasma torpedoes on Derna, which Senator Cretak claimed were for defense purposes only. () The Romulans were, however, unable to bring the weapons online due to a Bajoran blockade of the moon and the threatened intervention by the Federation. () These weapons gave off high concentrations of trilithium isotopes. () 

During the 24th century, Kazon  warships were equipped with plasma torpedoes. () 

Additionally, plasma torpedoes were standard armament aboard Cardassian orbital weapon platforms. ()

See also
 Plasma bomb
 Plasma bullet
 Plasma charge
 Plasma warhead
 Romulan technology

External link 
 

cs:Plasmové torpédo
de:Plasmatorpedo
ja:プラズマ魚雷
Explosive weapons