Canon Facts Backstage Info  Speculation
Bird of Prey
Unit Run
IKS Javakorr
plus thirty eight others. The class has now been retired from service with the Klingon government.
2348 - 2356
Length : 109 m
Beam : 92 m
Height : 20 m
Decks : 5 excluding nacelles
35,000 tons
2 x Mark 6 pulse disrupter cannon, total output 17,000 TeraWatts 
1 x Photon torpedo tube + 15 torpedoes
Defence Systems
Shield system, total capacity 486,000 TeraJoules 
Heavy Duranium/Tritanium single hull plus 0.6 cm high density armour
Standard level structural integrity field
Warp Speeds
(TNG Scale)
Normal Cruise : Warp Factor 5 
Maximum Cruise : Warp Factor 7 
Maximum Rated : Warp Factor 8.2 for twelve hours
Strength Indices
(Galaxy class = 1,000)
Beam Firepower : 170 
Torpedo Firepower : 160 
Weapon Range and Accuracy : 110 
Shield Strength : 80 
Hull Armour : 160 
Speed : 582
Combat Manoeuvrability : 1,800
Overall Strength Index
Expected Hull Life
Retired from service with hull defects (see text)
Refit Cycle
Minor : 2 years 
Standard : 10 years 
Major : 20 years (projected)

Notes : The D-12 is a variation on the standard B'Rel class Bird of Prey, introduced in 2348. The D-12s introduced a new type of cloaking device into the Klingon fleet, intended to provide a much greater degree of stealth from the latest generation of sensors coming into use in the alpha quadrant. However, the class was never satisfactory in service; the cloaking device was far bulkier than any previous model and had a significantly greater power requirement. In order to install it in a hull as small as the D-12's, half the torpedo armament had to be sacrificed together with the entire cargo bay and a third of the crew quarters. Since operating the cloaking device required an extra seven crew members to be carried over the standard maximum B'Rel complement, the D-12 class was highly cramped even by Klingon standards. Despite these shortcomings the D-12's entered service in small numbers throughout the next seven years. In 2357 fifteen of the crew of the KHL Kolnar were killed when a section of the hull blew out as the vessel cloaked; two months later a similar accident killed eleven warriors on the HKL Nak'Leth. Investigations indicated that a design fault in the plasma coils of the cloaking device was causing the system to emit high levels of neutron radiation, resulting in serious neutron fatigue to a large section of the hull of almost every ship.  The D-12 class was retired from service en masse in 2359.

Most were scrapped or used as targets in live fire exercises, but nine ships were sold to private individuals. These have generally been used by mercenaries and pirates, changing hands many times over the years. The most notable use of a D-12 was by the Klingon renegades Lursa and B'Etor of the House of Duras, who used a D-12 during their plot to gain control of a Trilithium weapon in 2371. When the USS Enterprise-D intervened the sisters were able to penetrate the vessels shields and inflict catastrophic damage to the star drive section, resulting in its destruction in a warp core breech. Although the saucer section was able to escape this explosion, it crashed on the planet Veridian III where it was later stripped and abandoned. The D-12, along with the Renegades, was destroyed by the Enterprise during the battle.

Last updated : 15th February 1999.
This page is Copyright Graham Kennedy 1998.

Star Trek et al is Copyright Paramount Pictures 1996/97.
No Copyright  infringement is intended and this page is for personal use only.
All  of the above classes of star ships and all of the
named ships are copyright Paramount 1996/97.