Krenim warship
Firing a chroniton torpedo.
Krenim warships is a type of warship utilized by the Krenim during the 24th century. These vessels are larger and more powerful than an Intrepid-class starship, due to, in part, their compliment of chroniton torpedoes.
In an alternate timeline experienced by Kes while she was living her life in reverse, the USS Voyager encounted, and was significantly damaged by a Krenim warship due to its initial inability to compensate for the temporal variance of the Krenim torpedoes. Thanks to Kes's assistance, due to her time shifts, Voyager was able to finally counter the temporal variance and disable the Krenim warships torpedo launcher. (VOY: "Before and After")
Voyager later encountered a Krenim warship in 2374, after the Krenim temporal weapon ship destroyed the Zahl homeworld. They would continue to be hounded by these vessels, to the point of the vessel nearly destroying Voyager, before Seven of Nine devised a temporal shield to protect the ship.
This class of vessel was eventually erased from the timeline, along with the erasure of the Krenim Imperium, following the destruction of the Garenor homeworld by the temporal weapon ship. The class that appeared in its place was the Krenim patrol ship(VOY: "Year of Hell")
- This class of vessel appears to have not existed in the final timeline created from the destruction of the weapon ship.