this is made of actual UNSC equipment though. and specs from halo wiki

UNSC Arkansas

Class Carrier

Affiliation United Nations Space Command
 
Technical specifications
 
Length 1455 meters
 
Slipspace Drive Yes
 
Slipspace velocity 2.1 light-years/day
 
Hull 4 Meters Titanium-A Battle Plate

2 Power plant Deuterium fusion cores

2 Engine units Main drives 

2 Auxiliary drives

Weapons

2 MAC Cannons

250 Over-sized Archer Missle pods (150 per rack)

150 50 MM Point Defense Auto Turrets

20 Fury Tactical Nukes

1 NOVA Bomb

Complement

300 Longsword Interceptors 2nd Contigent 23 Battalion

200 Pelicans 9th Contigent 8th Battalion

300 HEV Pods

200 Warthogs(half gauss half regualr)

75 Scorpion tanks

Troops

1000 Marines Alpha and Bravo Company of the 23 Battalion

300 Orbital Drop Shock Troopers Alpha And Bravo Company 13th Battalion
 
700 Crew, techs, and officers
 
UNSC Smart A.I.# 2947 Melonie  
 
UNSC PSI A.I. #8576 Scott

UNSC Milatary A.I. #86575 Viktor