| Universe : | Prime Timeline | 
| Affiliation : | Romulans | 
| Class Name : | Early Bird of Prey | 
| Type : | Stealth warship [1] | 
	
	| Unit Run : | Unknown | 
	
| Commissioned : | Entry date uncertain, but prior to 2151. [1] | 
| Dimensions : | Length : 250 m [2] Beam : 273 m
 Height : 60 m
 Decks : 9
 | 
| Mass : | Unknown | 
| Crew : | Approximately 100 | 
| Armament : | 2 x  Plasma cannon, total output 750 TeraWatts 4 x  S1 photon torpedo tube
 | 
| Defence Systems : | Standard Monotanium Single hull plus 1 cm Polarised armour. Standard level Structural Integrity Field
 | 
| Warp Speeds (TOS scale) :
 | Normal Cruise : 2 Maximum Cruise : 2.5
 Maximum Rated : 3  for 2 hours.
 
 | 
| Strength Indices : (Galaxy class = 1,000)
 | Beam Firepower : 15 Torpedo Firepower : 125
 Weapon Range and Accuracy : 10
 Shield Strength : -
 Hull Armour : 30
 Speed : 14
 Combat Manoeuvrability : 2,400
 | 
| Overall Strength Index : | 56 | 
| Diplomatic Capability : | 2 | 
| Expected Hull Life : | 40 | 
| Refit Cycle : | Minor : 2 year Standard : 2 years
 Major : 20 years
 | 
Notes
These vessels were in use by the Romulans during the 2150s, and featured 
 prominently in the Earth-Romulan war of that era. They were similar in capability 
 to the NX class Starships of the time, though their use of cloaking technology 
 gave them some advantage.
Colour key
References
| # | Series | Season | Source | Comment | 
| 1 | ENT | 2 | Minefield |  | 
| 2 |  |  | Speculative | Scaled from window rows on the nose, assuming a deck height of 3 metres. | 
Comments
These vessels were seen in Enterprise "Minefield". As usual for enterprise, 
 the ships are rather too sleek and advanced-looking for the 22nd century - in 
 fact it looks more advanced than its Original Series counterpart, and could 
 easily have been shown in TNG as a descendant of that vessel!
Also lamentable is the fact that these ships carry cloaking devices. The whole 
 idea of a cloaking technology was unknown to Kirk, so it is absolute nonsense 
 for Romulan vessels of more than a century prior to TOS to have this system.
Weaponry in uncertain; according to Spock the upcoming Earth-Romulan war was 
 conducted with nuclear weapons, but plasma weapons should also be available 
 and the weapons used to fire warning shots at the Enterprise looked like plasma 
 weapons or possibly disruptors.
The prominent nacelles indicate that these ships are equipped with warp drive; 
 it is a common misconception that the Bird of Prey Kirk encountered also lacked 
 warp drive, but this is simply not supported by the episode. See this 
article  for details.
Overall these ships should be an approximate match for the NX - if they are 
 significantly more powerful, it would be hard to believe that Humanity actually 
 won a war with the Romulan Empire around this time. I usually pepper ships like 
 this with lots of "Unknown" entries but since we can assume that the 
 Humans came to engage in frequent combat with these ships, it is safe to say 
 that their capabilities would become common knowledge.