B and C models From Klingon Ship Recognition Manual, 2nd Edition, FASA

NOTES - circa 2288:

Known sphere Of Operation: Empire-wide use
Data Reliability: C for D-32B; D for D-32C
Major Data Source: Klingon Sector Intelligence, Operation Dixie
 
     The D-32 is one of the newest ships in the Klingon Imperial Navy, the direct result of the latest Klingon-Romulan technology exchange. On Stardate,2/1801, as part of their arrangement, the Romulans supplied the Klingons with seven S-11 Class V scoutships and the plans to construct them. The Klingons had supplied some of the technology and design for the Romulan S- I 1 in the first place, and they were eager to begin construction of these vessels. In fact, they had been secretly planning to produce not only scouts but to enlarge the design to a cruiser and frigate model. While the negotiations were in session, the Klingons were tooling up and producing the pieces for the larger ships, and the compartment that would house the warp and impulse drive systems along with the central wing adjustment mechanism were in production when the treaty was signed.
     The most interesting aspect of the S-11 design is the movable wings, which are positioned straight out for normal cruise, down for attack, and up for atmospheric operation. In the attack mode, the ship presents a smaller target and the disruptors mounted at the wingtips have a better field of fire. In the atmospheric-flight mode, the wings take advantage of the aerodynamic design of the ship, and, in the cruise mode, the wings create a more structurally-sound design that can withstand the forces of high warp speeds. The D-32 design incorporated these features.
     The first cruiser model, the D-32A, lacked the maneuverability that the Klingons desired and was modified immediately to the D-32B, the first of which was commissioned on Stardate 2/2004, only 18 months after the first S-11s were received. The ship mounts a very powerful impulse drive system that delivers 40% of the total maneuver power and gives the ship its ability to perform atmospheric operations. The weaponry is the standard mixture of disruptors and photon torpedoes; the disruptors cover all fields of fire, and the photon torpedoes are mounted both fore and aft.
     The D-32C is reported to have a Romulan plasma weapon of the RPL-1 type instead of the forward-firing photon bay. It also reputedly uses the KSK shielding system, which is slightly more efficient than KSD installed on the D-32B, and the superstructure is thought to be stronger. The KCC Klingon cloaking device is used on both models, but it should prove more effective on the 0-32C because of the plasma bolt weaponry.
     Of the 40 D-32s built, 39 remain in active service and 1 has been destroyed. Information obtained from Operation Dixie revealed that the class is produced at H'renn. Undocumented information suggests that Mustaka is being tooled up for production of these vessels. The class name is from the Klingon z'gavva, which translates to "stronger bird'.