This is a list of correct Klingon ships names according to Ships of the Starfleet, and you can use them in your shipnames.txt file. The game becomes more fun when you see Klingon warships with their original Klingon names.
The D-7:
||Klolode
||Atropos
||Gortuk
||Hakask
||Jurakte
||Kahless
||Klathas
||Klothos
||Lachesis
||Makita
||Tabor
||Thanatos
||Tor'stog
||Tuer
Here are the same name in English, you can use them for another Klingon ship type:
||Destruction
||Invincible
||Furious
||Horrendous
||Assassin
||The Merciless One
||Pestilence
||Carnage
||Havoc
||Executioner
||Powerful
||Vengeance
||Devisor
||Murderous One
Here are the names of the K't'ingas:
||K't'inga
||Hakkarl
||Kivord
||Skelpf
||Arakkab
||Ykir
||Kenek
||Losu
||Malig
||Make'
||Nawrya
||Menhaden
||Mejab
||Eelst
||Ehhak
||Amar
||Ekru
Here are the names of the Kt'ingas in English, so you can use them for another class:
||Conquerer
||Vanguard
||Tumultuous
||Battle
||Indignant
||Usurper
||Ruler of Many
||Cold
||Terror
||Death
||Success
||King
||Thief
||Hunter
||Venomous
||Revenge
||Fire
Here are the names of the Bird of Prey Scouts:
||K'tara
||Matara
||Asgarth
||Kroll
||Pak't Marr
||Q'var
||Krugg
||Rustarr
***End of Data***