D-7 class (SFC)

D-7 class

D-7 class (SFCGame)

Commissioned	2250
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The D-7 class battlecruiser was the standard cruiser of the Klingon Deep Space Fleet, and was based on the same basic spaceframe as the D-6 class. Less expensive than most other heavy cruisers, it lacked the full range of scientific capabilities and crew living conditions were spartan. In combat, the D-7 was noted for its superior turn radius and for its many transporters, which made for effective hit and run raids, and for boarding party actions. Introduced in 2250, the D-7 had a crew complement of 440, featured a capacity of eight shuttlecraft, four science labs, five transporters, and three tractor beam emitters; it was armed with two Type-F missile launchers, four banks of Type-3 disruptors, and nine banks of Type-2 phasers. The D-7 remained in service until 2282, when it was succeeded by the D-7B refit, introduced in 2270. The D-7B featured stronger shields; it replaced its Type-F missiles with Type-As, and added a bank of Type-3 phasers. The D-7B remained in service until 2297, when it was succeeded by the D-7K refit, introduced in 2285. The D-7K replaced its Type-A missiles with Type-B, and remained in service until 2301.

Also introduced in 2250, the D-7C command battlecruiser was a command version of the basic D-7 design, with improved shields and weapons, and an increased crew capacity of 470. The D-7C also featured seven transporters and five tractor beam emitters, and mounted two Type-B missile launchers, four banks of Type-3 disruptors, three banks of Type-1 phasers, six banks of Type-2 phasers, and two banks of Type-3 phasers. The D-7C remained in service until 2291, when it was replaced by the D-7L refit, introduced in 2279, which replaced two banks of Type-2 phasers with Type-1s. The D-7L remained in service until 2301.

The D-7D drone battlecruiser, introduced in 2287, was not intended as a long-range bombardment platform like the D-6D, but was an experiment to produce a more effective cruiser for general combat purposes. Had the class been considered a success, many or most of the existing D-7s would have been converted to the D-7D specifications. The D-7D's lack of rear-arc defenses was accepted by the captains, but rejected by the admiralty. The D-7D featured a capacity of eleven shuttles, and was armed with four Type-B missile launchers, four Type-3 disruptor banks, three banks of Type-1 phasers, and two banks of Type-2 phasers.

The Kareli Design Bureau, exploring further enhancements to the venerable D-7 spaceframe, incorporated several innovative design features into the D-7W heavy command cruiser, which was introduced in 2289. The most powerful D-7 variant ever produced, it had a crew complement of 500, featured even stronger shields, a capacity of ten shuttles, four science labs, five transporters, four tractor beam emiters, and was armed with two Type-B missile launchers, four banks of Type-3 disruptors, seven banks of Type-1 phasers, four banks of Type-2 phasers, and two banks of Type-3 phasers.

The D-7CT tactical command cruiser variant featured a capacity of five shuttlecraft, four science labs, seven transporters, two tractor beam emitters, and was armed with two Type-A missile launchers, four Type-3 disruptor banks, five Type-1 phaser banks, four Type-2 phaser banks, and two Type-3 phaser banks.

A final variant, the C-7 class heavy battlecruiser, was introduced in 2297.

Romulan

Among the ships transferred by the Klingon Empire to the Romulan Star Empire were three D-7 class battlecruisers in 2266. These were converted to Romulan technology and deployed as a single squadron on the Federation border. Although the spaceframes were very similar, D-6 class battlecruisers could not be converted to D-7Rs. The D-7Rs featured a crew complement of 440, and a capacity of ten shuttlecraft; they were equipped with four science labs, five transporters, and three tractor beam emitters]]. The D-7R was armed with four torpedo tubes — with two dedicated to Type-G plasma torpedoes and two dedicated to Type-F plasma torpedoes — as well as five banks of Type-1 phasers and four banks of Type-2 phasers. The D-7R remained in service until 2288, when it was superseded by the D-7RB refit, which was introduced in 2274. The D-7RB was very similar to the D-7R, but had stronger shields and replaced the Type-G plasma torpedoes with Type-S plasma torpedoes.

The D-7RC (KRC) command battlecruiser variant was introduced in 2268, and was a conversion of the D-7C command cruiser, three of which were purchased by the Romulan Empire and armed with Type-G plasma torpedoes. The D-7RC featured a crew complement of 480, a capacity of ten shuttles, and was equipped with four science labs, seven transporters, and three tractor beam emitters. It was armed with two Type-G plasma torpedo tubes, two Type-F plasma torpedo tubes, two Type-B missile launchers, seven banks of Type-1 phasers, and six banks of Type-2 phasers. The D-7RC remained in service until 2286, when it was superseded by the D-7RCS (KRCS) refit, which was introduced in 2274. The D-7RCS was largely similar to the D-7RC, but replaced the Type-G torpedoes with Type-S, and added two more tractor beam emitters for a total of five, as well as two mech tractors.

D-7 class vessels

SFC Timeline

I.K.V. Anarchist  • I.K.V. Annihilation  • I.K.V. Antagonist  • I.K.V. Attacker  • I.K.V. Avenger  • I.K.V. Battlestalker  • I.K.V. Challenger  • I.K.V. Chieftain  • I.K.V. Conqueror  • R.I.S. Conqueror  • I.K.V. Courageous  • I.K.V. Crusher  • I.K.V. Dareslayer  • I.K.V. Darkslayer  • I.K.V. Dawnslayer  • I.K.V. Deathslayer  • I.K.V. Deathstalker  • I.K.V. Decimator  • I.K.V. Deedslayer  • I.K.V. Deepslayer  • I.K.V. Defiler  • I.K.V. Deftslayer  • I.K.V. Demolisher  • I.K.V. Demonslayer  • I.K.V. Devastator  • I.K.V. Devilslayer  • I.K.V. Devisor  • I.K.V. Dimslayer  • I.K.V. Direslayer  • I.K.V. Dirkslayer  • I.K.V. Divineslayer  • I.K.V. Doomslayer  • I.K.V. Doubtslayer  • I.K.V. Dourslayer  • I.K.V. Dragonslayer  • I.K.V. Dreadslayer  • I.K.V. Dreamslayer  • I.K.V. Dreamstalker  • I.K.V. Droitslayer  • I.K.V. Duelslayer  • R.I.S. Ficuda  • R.I.S. Finality  • I.K.V. Firestalker  • R.I.S. Fortis  • I.K.V. Hailstorm  • I.K.V. Hellstalker  • I.K.V. Killer  • I.K.V. Klolode  • I.K.V. Klothos  • I.K.V. Merciless  • R.I.S. Morte  • R.I.S. Mortis  • I.K.V. Nemesis  • I.K.V. Pandemonium  • I.K.V. Pitiless  • I.K.V. Relentless  • I.K.V. Ruthless  • I.K.V. Sangfroid  • I.K.V. Savage  • R.I.S. Siege  • I.K.V. Soul of Vengeance  • I.K.V. Strangler  • R.I.S. Subjugator  • I.K.V. Thunderchild  • I.K.V. Thunderer  • I.K.V. Thunderstorm  • R.I.S. Tormentor  • I.K.V. Vengeance  • R.I.S. Victor  • I.K.V. Warhammer  • I.K.V. Warstalker