Note: The Loi are an alien race featured in GURPS Atomic Horror. This can be used as a stock flying saucer for any B-movie inspired GURPS campaign.
The scout saucer features artificial gravity, gravitic compensators, a stealth hull (-10 to detect), and FTL comm/sensor arrays. Its tractor beam can generate 30 tons of force.
Front Hull Armor, Diamondoid (dDR 20)
 Multipurpose Comm/Sensor Array
 Habitat (6 cabins)
 Habitat (20 hibernation chambers, 1-bed sickbay)
[5!] Weapon Battery, Major (turret-mounted 300MJ tractor beam)
 Cargo Hold (50 tons)
Central Hull Armor, Diamondoid (dDR 20)
 Control Room
[3!] Weapon Battery, Medium (turret-mounted 100MJ laser, turret-mounted 28cm antimatter missile launcher, 15 tons cargo space)
[4!] Force Screen, Heavy (dDR 70)
[5-6] Cargo Hold (100 tons)
[core!] Stardrive Engine (FTL-1)
Rear Hull Armor, Diamondoid (dDR 20)
 Engine Room
[3!] Reactionless Engine, Super (50G acceleration)
[4-6] Cargo Hold (150 tons)
[core] Power Plant, Antimatter Reactor (provides 4 Power Points)
TL Vehicle dST/HP HT Hnd/SR Move SM LWt. dDR Occ Load Cost Notes
11^ Loi Scout Saucer 70 13 -0/5 50/c +8 1,000 90 12ASV 316.2 M$152.3 
Notes:  Force screen can be powered up for an additional Power Point, increasing dDR to 160.