Another 20th century vehicle

[ZeroArmour]

Yes, that's all kinds of awesome.

[Omega1967]

here is the rough outline of a city size mothership.

The Visitor Mothership
Class and Type: long range research and warship
Commissioning Date: late 20th century

Hull Systems
Size: 16
Diameter: 4000 meters
Height: 1000 meters
Decks: 200
Mass: 22,000,000 metric tons
SUs Available: 11,000
SUs Used: 10,317

Hull Outer <64>
Hull Inner <64>
Resistance Outer Hull: 2 <0>
Resistance Inner Hull: 2 <0>

Structural Integrity field [1 power/10 Protection/round]
Main: Class 3 (Protection 60/90) <34>
Backup: Class 3 (Protection 30) <17>
Backup: Class 3 (Protection 30) <17>
Specialized hull: Atmospheric capability <16> Planetfall capability <16>

PERSONNEL SYSTEMS
Crew/Passengers/Evac: 3,500/875/52,000
Crew Quarters
Basic: 2200 <220>
Expanded: 1600 <320>
Luxury: 400 <400>
Unusual: 175 <175>

Environmental Systems
Basic Life Support [14 Power/round] <64>
Reserve Life Support [7 Power/round] <32>
Emergency Life Support (96 emergency shelters) <32>
Gravity [8 Power/round] <16>
Consumable: 10 years worth <160>
Food Replicators [16 Power/round] <16>
Industrial Replicators
Type: network of small Replicators [2 Power/round] <16>
Type: 4 Large unit [2 Power/replicator/round] <12>
Medical Facilities: 10 (+3) [10 Power/round] <50>
Recreation Facilities: 10 [Power/round] <80>
Personal Transport: Turbolifts, Jefferies tubes [2 Power/round] <48>
Fire Suppression System [1 Power/round when active] <16>
Cargo hold: 24,000,000 cubic meters <720>
Locations: Various locations throughout the ship
Escape Pods <33>
Number: 640
Capacity: 8 persons per pod

Propulsion Systems
Gravity Drive: Type 07 <4000>
Speed: 2.5 /2.7/ 3.0 [1 Power/.2 warp speed]
Special configuration: Embedded nacelles <64>
Reaction Control System (.025c) [2 Power/ round when in use] <16>

Power Systems
Gravity Drive: Class type 7 (generates 320 Power/round)
Locations:
Fusion Reactors: one type 20 (generates 100 power/reactor/round) <100>
Emergancy power: Type F (generates 50 power/round) <50>
EPS: Standard Power flow, +300 Power transfer/round <110>
Standard Usable Power: 420

Operations systems
Bridge: <80>

3 Computers Core: [5 Power/round] <32 x 3 = 96>
Uprating: Class Alpha (+1) [1 Power/computer round] <6>
ODN <48>

Navigational Deflector [5 Power/round] <64>
Range: 10/20,000/50,000/150,000
Accuracy: 5/6/8/11
Location:

Sensor Systems
Long-range Sensors [5 Power/round] <58>
Range package: Type(Accuracy 3/4/7/10)
High Resolution: 8 Light-years (.5/.6-1.0/1.1-4.5/4.6-6.0)
Low Resolution: 18 Light-years (1.0/1.1-6.5/6.6-13.5/13.5-13.6/18.0)
Strength Package: Class 10 (strength 10)
Gain Package: Class Beta (+2)
Coverage: Standard

Lateral Sensors [5 Power/round] <26>
Strength Package: Class 10 (strength 10)
Gain Package: Class Beta (+2)
Coverage: Standard

Navigational Sensors: [5 Power/round] <24>
Strength Package: Class 10 (strength 10)
Gain Package: Class Beta (+2)
Probes: 100 <10>
Sensor Skill: 4


Flight Control Systems
Autopilot: Shipboard systems (flight control) 4, Coordination 3 [1 Power/round in use] <15>

Navigational Computer
Main: Class 2 (+1) [1 Power/round] <2>
Backups: 4 <4>

Inertial Damping Field
Main <128>
Strength: 3 [3 Power/round]
Number: 4
Backup <32>
Strength: 2 [2 Power/round]
Number: 4
Attitude Control [4 Power/round] <4>

Communications Systems
Type: Class 10 [2 Power/round] <32>
Strength: 10
Security: -8 (Class Epsilon Uprating)
Basic Uprating: Class Beta (+2)
Emergency Communications: [2 Power/round] <1>

Tractor Beams
Emitter: Class Delta [3 Power/Strength used/round] <6 x 12 = 72>
Accuracy: 4/5/7/10
Lactation: located every 60 degrees around outer edge
Emitter: Class Alpha [3 Power/Strength used/round] <3 x 12 = 36>
Accuracy: 5/6/8/11
Location: two per shuttlebay

Transporters – no transporters

Security Systems Rating: 3 <12>
Anti-Intruder System: Yes [1 Power/round] <16>
Internal Force Field [1 Power/3 Strength] <16>
Science Systems Rating: 4 (+3) [5 Power/round] <36>
Specialized Systems: 5 <25>
Laboratories: 70 <14>

Tactical Systems
Energy Weapons <23 x 10 = 230>
Type Equal to a type VII phaser array
Damage: 140 [14 Power]
Number of Emitters: 120 (up to 3 shots per round)
Targeting Systems: Class Beta (Accuracy 4/5/7/10)
Range: 10/30,000/100,000/300,000
Location: twelve locations six location dorsal and six location ventral located every 60 degrees around hull
Firing arc: 360 degrees
Firing Modes: Standard, Pulse, continuous


Primary Planetary Devastator Energy Weapons <31>
Type Equal to a type XII phaser array
Damage: 240 [24 Power]
Number of Emitters: 120 (up to 3 shots per round)
Targeting Systems: Class Beta (Accuracy 4/5/7/10)
Range: 10/30,000/100,000/300,000
Location: one Ventral center of the ship
Firing arc: 30 degrees
Firing Modes: Standard,

Torpedo Launcher <12 x 4 = 48>
Standard Load: Equal to a Type II Photon torpedo (200 damage), Equal to a Type I Photon torpedo (160 damage)
Spread: 4
Range: 15/300,000/1,000,000/3,500,000
Targeting Systems: Class Beta (Accuracy 4/5/7/10)
Power: [20 + 5 per torpedo fired]
Location: four location every 90 degrees
Firing Arc: Forward, aft, starboard, and Port, but are self-guided
Torpedoes carried: 400 <40>

TA/T/TS: Class Gamma [2 Power/round] <12>
Strength: 9
Bonus: +2
Weapon Skill: 4

Shields (Forward, Aft, Port, Starboard) <98 x 4 = 392>
Shield Generator: Class 7 (protection 300 + 100 embedded nacelles) [30 Power/shield/round] 165
Shield grid: Type C (50% increase to Protection 450)
Subspace field Distortion Amplifiers: Class Iota (Threshold 100 + 10 embedded nacelles)
Recharging System: Class 1 (45 seconds)
Backup Shield Generators: 4 (1 per shield) <16>
Auto-Destruct System <16>

Auxiliary Spacecraft systems
Shuttlebay(s): Capacity for 400 Size worth of ships <800>
Standard Complement: 200 fighter and shuttlecraft
Location(s): Six shuttlebays located 60 degrees around the outer edge of the ship