| SMALLCRAFT CLASS | |
|---|---|
| D4 class | |
 A D4 class | |
| Affiliation: | Klingon Empire; Klingon Defense Force |
| Classification: | Patrol ship |
| Service period: | 2259-2260s (Kelvin timeline) |
| Specifications | |
| Armaments: | Two directed energy cannons |
The D4 class was a type of small Klingon patrol ship used by the Klingon Empire in the mid 23rd century. It was referred to as a scout, and Bird-of-Prey.
Specifications[]
Front view of a D4 class bird of prey
The D4 class was armed with two directed energy cannons on top of the wings near the fuselage. The homing green energy blasts from the cannons could arc through the air before impacting a target. The engine had a single aft exhaust. The wings could be angled in various ways, giving the ship high-speed atmospheric maneuvering capabilities and allowing it to maneuver through tight spaces. The ship had landing capabilities. Despite it's size, the D4 was highly maneuverable. It was capable of atmospheric flight and planetary landing. Troops from the ship could also be deployed on cables mid-flight from four hatches in the underside of the craft.
History[]
A aft view of a Klingon D4-class patrol ship
In 2259, three of these vessels intercepted the K'normian trading ship that was confiscated by the crew of the USS Enterprise during the Mudd Incident. The trade ship was carrying James T. Kirk, Spock, Nyota Uhura, Hendorff and another security officer over the Ketha Province on Qo'noS. The D4 class ships forced the trade ship to land. Two of the ships were destroyed by Khan Noonien Singh with a boolean gun.
Several of these ships accompanied the IKS Chonnaq to the Artel system and attacked the USS Enterprise in 2263.