Place Excal.pof in models folder & the *.pcx file in the maps folder
THIS IS MY MODEL! DARKKNIGHT STOLE IT OFF ME! HE'S POSTING IT SOON WITH A PACKAGE! PLEASE ASK ME AT Kevin@tank71.freeserve.co.uk if you want to use it in a mission your posting.
Copy the following below into your Ships.tbl WARNING!!!!! The Orion may not work. I have had it happen to me before and the best thing is to have 2 tbl's one with each.

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$Name:                          GTD Galactica (Excaliber)
$Short name:					Tcapexcal
$Species:                       Terran
+Tech Description:
XSTR("An upgraded version of the GTD Orion.This newly designed command carrier ship has been improved with a multi alloy armour which gives more resistance to all types of weaponry giving it a 100% increase of survivability.It has also been fitted with two super heavy beam guns and a prototype Shivan weapon which make it one of the most formiddable opponents.", 3051)
$end_multi_text
$POF file:					Excal.pof
$Detail distance:			(0, 3500, 9000, 22000)
$Show damage:				NO
$Density:					1
$Damp:						0.2
$Rotdamp:					1.5
$Max Velocity:				0.0, 0.0, 10.0
$Rotation time:				200.0, 200.0, 200.0
$Rear Velocity:				0.0
$Forward accel:				25.0
$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                                                     ;; If set to Yes, then when the ship dies, the explosion propagates through it.
$Shockwave Speed:			600.0                                           ;; speed shockwave expands at, 0 means no shockwave
$Shockwave Count:			4
$Default PBanks:			()
$Default SBanks:			()
$SBank Capacity:			()
$Shields:					0
$Power Output:				100.0
$Max Oclk Speed:			8.0
$Max Weapon Eng:			100.0
$Hitpoints:					150000
$Flags:						( "capital" "big damage" "in tech database")
$AI Class:					Captain
$Afterburner:				NO
$Countermeasures:			0
$Scan time:                     2000
$EngineSnd:       138                   ;; Engine sound of ship
$Closeup_pos:           0.0, 0.0, -2820
$Closeup_zoom:          0.5
$Score:             1000
$Subsystem:                     Turret01a, 1.875, 3.0
	$Default PBanks:        ( "Shivan Super Laser" )
$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:        ( "BFGreen" )
$Subsystem:                     Turret07, 0.625, 2.0
	$Default PBanks:        ( "BFGreen" )
$Subsystem:                     Turret08, 0.625, 2.0
	$Default PBanks:        ( "AAAf" )
$Subsystem:                     Turret09, 0.625, 2.0
	$Default PBanks:        ( "BFGreen" )
$Subsystem:                     Turret10, 0.625, 2.0
	$Default PBanks:        ( "AAAf" )
$Subsystem:                     Turret11, 0.625, 2.0
	$Default PBanks:        ( "BFGreen" )
$Subsystem:                     Turret12, 0.625, 2.0
	$Default PBanks:        ( "BFGreen" )
$Subsystem:                     Turret13, 0.625, 2.0
	$Default PBanks:        ( "BFGreen" )
$Subsystem:                     Turret14, 0.625, 2.0
	$Default PBanks:        ( "TerSlash" )
$Subsystem:                     Turret15, 0.625, 2.0
	$Default PBanks:        ( "Terran Turret" )
$Subsystem:                     Turret16, 0.625, 2.0
	$Default PBanks:        ( "AAAf" )
$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