The D6-class was a type of battle cruiser which saw service in the Klingon Empire in the early-to-mid 23rd century. In the 2240s, the D6's began to be replaced with the more efficient and advanced D7-class. (TOS - Enterprise Logs short story: "Though Hell Should Bar the Way")

Despite this, however, the appearance of the hull was seen again in the later part of the 23rd century in the form of the Relentless class light cruisers. (TOS video game: Klingon Academy)

Known VesselsEdit

• IKS Kut'luch
• IKS Vengeance

ConnectionsEdit

Klingon starship classes
Klingonese names	Akif • B'rel • Baka Re' • Ber'taa • Besz Ra'te' • Birok • CharghwI' • Chava'Kal • ChunDab • Chuq'Beh • Chutok • D'aka • D'ama • Dath D'lan • D'esta Kar • D'Gavama • Eakin K'nall • Fek'lhr • Haqtaj • H'ban Pav • Jach'Eng • Jfolokh • Kalath • Karas • Kas Maal • K'el Ri'anda • Kh'exrilin • K'hanakh • Khitomer • Kl'ar • Klolode • Kl'sarza • Kl'xenova • K'mirra • K'nall • K'nel • Koloth • Kom Ka'des • Komo Val • Koreba • Kronos • K't'agga • K't'alla • K't'inga • K't'kara • K't'mara • K't'rika • K'vort • K'vort Cha • L'rexa • Lar'hal • Lara'atan • LI'wI' • Mas To Gal • May'Duj • Mortum Hesta • Na Ra'den • Negh'Var • NuQ'Duj • PIH • Plen Zha • PumwI' • qa'Hos • Qang • Qeh'Ral • Qexa • qeylIS betleH • QuD • Riskadh • Sivista • SuQ'jagh • SuvwI'Qeh • T'h'lar • Talat Kh'exesta • Tas'esta • Vakk • V'al'kon • V'kar Zadan • V's'talo • VoDleH • Voodieh • Vor'cha • Z'gal • Z'gavasta • Z'gavva • Z'mortama • Zha Mortas
Translated names	Accuser • Administrator • Alliance • Battle Cruiser • Bird of Prey • Bringer of Agony • Bringer of Destiny • Bringer of Destruction • Bringer of Justice • Carrier of Doom • Catapult • Chancellor • Death Boot • Death Rite • Death Stalker • Defender • Emperor • Enforcer • Ever Victorious • Fat Man • Great Bird • Grim Reaper • (Gull) • Healer • Insurrection • Little Killer • Luckless • Mender • Mover • (Murph) • One Wing • Painbringer • Pathmaker • Predator • (Raptor) • Ravenous • Relentless • Saber • Seeker • Speedstar • Stalker • Star • Stinger • Stingtongue • Strong Victor • Stronger Bird • Suspicious • Swiftwind • Sword of Kahless • Throne Seeker • Trader's Game • Truthbringer • Tugboat • Unseen Creeper • Warrior's Anger • Watcher • Winner
Alphanumeric names	B5 • D2 • D3 • D4 • D5 • D6 • D7 • (D7/D5 Klolode • D7 Akif • D7A • D7C • D7G • D7M • D7R • D7S • D7 Koloth) • D9 • D10 (bird of prey) • D10 (cruiser) • D11 • D12 (bird of prey) • D12 (cruiser) • D14 • D16 • D18 • D20 • D32 • E4 • E6 • F5 • F5B • F5C • F5G • F5GB • F5K • F5L • F5W • F5Y • F6 • FWK • FWL • FWC • G2 • G3 • G4 • G5 • G6 • G8 • K3 • K4 • K5 • K6 • K14 • K15 • K17 • K18 • K22 • (K22B) • K23 • K24 • K26 • K27 • K30 • K32 • L6 • L9 • L13 • L24 • L42 • S4 • S5 • S8 • T3 • T5 • T12
By time period or type	Birds-of-prey (22nd century bird of prey) • 23rd century scout vessel • mobile battle base • battleship • cargo ship • colony ship • construction ship • dropship • mining freighter • prison barge • repair ship • scout ship