It can easily be achieved, however there are some conditions that need to be met:
- the turret needs to have a wide enough FOV
- the turret must not have the "check hull"-flag (if it has the FOV-setting is counteracted by the line of sight-check)
- the weapon must be homing ($Homing: set to YES) and have valid homing parameters
- the weapon's homing view cone must be wide enough to enable it the requisite change in direction (>150 is ideal)
- the weapon needs to have the $Swarm-parameter ("$Swarm: 1" does work fine), the $Free Flight Time-parameter is optional but encouraged
e.g. here is my version of a Shivan Fusion mortar for use with modified Cain- and Lilith-models, which basically works like a VLS:
$Name: Fusion Mortar#Shivan
$Model File: s_bomb.pof
$Mass: 0.1
$Velocity: 100.0
$Fire Wait: 4.5
$Damage: 35
$Blast Force: 0.2
$Inner Radius: 0.0
$Outer Radius: 0.0
$Shockwave Speed: 0
$Armor Factor: 1.0
$Shield Factor: 1.0
$Subsystem Factor: 1.0
$Lifetime: 22.5
$Energy Consumed: 0.0
$Cargo Size: 1.0
$Homing: Yes
+Type: ASPECT
+Turn Time: 2.0
+View Cone: 360
+Min Lock Time: 0.1
+Lock Pixels/Sec: 1000
+Catch-up Pixels/Sec: 1000
+Catch-up Penalty: 0
+Seeker Strength: 3.0
$Swarm: 2
+SwarmWait: 0.8
$Acceleration Time: 4.0
$Free Flight Time: 3.0
$LaunchSnd: 102
$ImpactSnd: 88
$FlyBySnd: -1
$Rearm Rate: 1.0
+Weapon Range: 2250
$Flags: ( "Big Ship" "Huge" "no subsystem homing" "no lifeleft penalty" )
$Trail:
+Start Width: 1.25
+End Width: 0.25
+Start Alpha: 1.0
+End Alpha: 0.0
+Max Life: 1.5
+Bitmap: NewMiss1
$Icon: icon_harbinger
$Anim: harbinger
$Impact Explosion: none