Er.... Worf refered to the BOP withthe faulty coilds as "an old L22" in "Generations".
The "HMS Bounty" is also an L22 scout.
The D12 is larger light cruiser type K'Vort BOP seen in "Yesterday's Enterprise".
Incorrect ....
Taken directly from the "Generations Script .....................
WORF
It is a Class D-twelve Bird of
Prey. They were retired from
service because of defective
plasma coils.
RIKER
Plasma coils... is there any way
we can use that to our advantage?
WORF
I do not see how. The plasma coil
is part of their cloaking
device...
AS for the BoP's ............
The Klingons applied several class designations to the different types of their Bird-of-Prey design, including the
K'vort-class,
B'rel-class and
D12-class.
The
D12-class was retired from service by the 2350s due to faulty plasma coils, which were components of the cloaking systems. (Star Trek Generations) In fact, according to Gorta, finding one of these vessels with a working cloaking device was rather unique in 2370. (TNG: "Firstborn")
The
B’rel class, first developed in 2270, is the second known Bird-of-Prey operated by the Klingon Empire. By the 2360s, it was not uncommon to find a B'rel-class Bird-of-Prey stripped and relegated to a surplus yard. Ferengi DaiMon Lurin acquired two of these vessels, complete with cloaking devices, and managed to make them space worthy once again, after a few repairs and the addition of some weapons. (TNG: "Rascals")
In an alternate timeline,
the K'Vort-class was referred to as a battle cruiser, and was larger than its "prime universe" counterpart. While slower than the Galaxy-class battleships of the era, in a 3:1 confrontation, a Galaxy-class would not be able to last long. (TNG: "Yesterday's Enterprise")
This class was known to be equipped with several escape pods, and saw use well into the 2370s. (DS9: "Penumbra")
The K'Vort was one of the most common and expendable vessels in Regent Worf's fleet. (DS9 episodes; CCG: Mirror, Mirror)
Appearances
TOS films: (4x)
Star Trek III: The Search for Spock
Star Trek IV: The Voyage Home
Star Trek V: The Final Frontier
Star Trek VI: The Undiscovered Country
TNG: (12x)
"A Matter Of Honor"
"The Defector"
"Yesterday's Enterprise" (K'vort-class)
"Sins of the Father"
"Reunion"
"The Mind's Eye"
"Redemption"
"Redemption II"
"Unification I"
"Unification II"
"Rascals" (B'rel-class)
"Firstborn"
TNG films: (1x)
Star Trek Generations (D12-class)
DS9: (26x)
"Past Prologue"
"Crossover" (mirror universe)
"Blood Oath"
"The Way of the Warrior"
"Return to Grace"
"Sons of Mogh"
"Rules of Engagement"
"Shattered Mirror" (mirror universe)
"Apocalypse Rising"
"In Purgatory's Shadow"
"By Inferno's Light"
"Soldiers of the Empire"
"Call to Arms"
"A Time to Stand"
"Sons and Daughters"
"Favor the Bold"
"Sacrifice of Angels"
"You Are Cordially Invited"
"Tears of the Prophets"
"Image in the Sand"
"Once More Unto the Breach"
"Strange Bedfellows"
"The Changing Face of Evil"
"When It Rains..."
"Tacking Into the Wind"
"What You Leave Behind"
VOY: (2x)
"Unity"
"Drone" (K'vort-class; computer display)
Resource:
Memory Alpha IMHO is one of the most definitive, accurate, and accessible encyclopedia and reference for everything related to Star Trek.
http://memory-alpha.org/en/index.php/Klingon_bird-of-preyInternet Movie Script Databasehttp://www.imsdb.com/Movie%20Scripts/Star%20Trek:%20Generations%20Script.htmlHope that clears it up