Toss this into your ships.tbl.
$Name: GTD Orion (Bastion)
$Short name: TCap
$Species: Terran
$POF file: capital01b.pof
$Detail distance: (0, 1500, 3000, 14000)
$Show damage: NO
$Density: 1
$Damp: 0.2
$Rotdamp: 1.5
$Max Velocity: 0.0, 0.0, 15.0
$Rotation time: 150.0, 150.0, 150.0
$Rear Velocity: 0.0
$Forward accel: 20.0
$Forward decel: 10.0
$Slide accel: 0.0
$Slide decel: 0.0
$Expl inner rad: 100.0
$Expl outer rad: 2400.0
$Expl damage: 400.0
$Expl blast: 6500.0
$Expl Propagates: YES
$Shockwave Speed: 600.0
$Default PBanks: ()
$Default SBanks: ()
$SBank Capacity: ()
$Shields: 0
$Power Output: 100.0
$Max Oclk Speed: 8.0
$Max Weapon Eng: 100.0
$Hitpoints: 100000
$Flags: ( "capital" )
$AI Class: Captain
$Afterburner: NO
$Countermeasures: 0
$Scan time: 2000
$EngineSnd: 136 ;;
$Closeup_pos: 0.0, 0.0, -2820
$Closeup_zoom: 0.5
$Score: 1750
$Subsystem: Turret01a, 1.875, 3.0
$Default PBanks: ( "Terran Huge Turret" "Terran Huge Turret" "Terran Huge Turret" )
$Subsystem: Turret02a, 1.875, 3.0
$Default PBanks: ( "Terran Huge Turret" "Terran Huge Turret" "Terran Huge Turret" )
$Subsystem: Turret03a, 1.875, 3.0
$Default PBanks: ( "Terran Huge Turret" "Terran Huge Turret" "Terran Huge Turret" )
$Subsystem: Turret04a, 1.875, 3.0
$Default PBanks: ( "Terran Huge Turret" "Terran Huge Turret" "Terran Huge Turret" )
$Subsystem: Turret05a, 1.875, 3.0
$Default PBanks: ( "Terran Huge Turret" "Terran Huge Turret" "Terran Huge Turret" )
$Subsystem: Turret06, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret07, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret08, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret09, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret10, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret11, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret12, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret13, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret14, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret15, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: Turret16, 0.625, 2.0
$Default PBanks: ( "Terran Turret" )
$Subsystem: RadarDish01, 2, 0.0
$Subsystem: RadarDish02, 2, 0.0
$Subsystem: RadarDish03, 2, 0.0
$Subsystem: navigation, 5, 0.0
$Subsystem: communication, 5, 0.0
$Subsystem: weapons, 15, 0.0
$Subsystem: sensors, 5, 0.0
$Subsystem: engines, 35, 0.0
$Engine Wash: Default900
$Subsystem: fighterbay, 0, 0.0