Can't we rather go with :
Because often in the forums we forget the letters at the beginning and say 304s rather than BC-304s. And we can even go further with 310s, 320s, ... 3X0s series which all fall under the BC-300s denomination but with slight variations.
Attack fighter (F-100)
Space bomber (SB-200)
Battlecruiser (BC-300)
Cargo ship (CS-400)
Frigate (FR-500)
Destroyer (DD-600)
Cruiser (CR-700)
Missile Cruiser (MC-800)
Carrier (CA-900)
Battlecarrier (BCA-1000)
Battleship (BB-1100)
and so on
Space bomber (SB-200)
Battlecruiser (BC-300)
Cargo ship (CS-400)
Frigate (FR-500)
Destroyer (DD-600)
Cruiser (CR-700)
Missile Cruiser (MC-800)
Carrier (CA-900)
Battlecarrier (BCA-1000)
Battleship (BB-1100)
and so on
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