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[MrWiggles]

I think a wondering empire may have to forgo research and pirate stuff from ruined out posts and leeching from  NPRs.

Steve was commenting that you'll need to give a good tech boost to the player race to really pull this off.

I do like the idea of engineering brigades being able to construct installations. Army Corp of Engineers can build just about anything with spit and a glare from superiors.

[Micro102]

It would be so freaking awesome to have an almost fully cloaked massive 30 billion ton colony ship while having the entire galaxy trying to kill you, and then one of they scouts bump into you and suddenly a new planet shows up on their system map and their scout is gone and the planet disappears.

[MrWiggles]

It would be so freaking awesome to have an almost fully cloaked massive 30 billion ton colony ship while having the entire galaxy trying to kill you, and then one of they scouts bump into you and suddenly a new planet shows up on their system map and their scout is gone and the planet disappears.

Well the highest level of cloak hides likes 5 percent of your mass, so a thirty million t ship will still light up on everyone scanner, and that not including the thermal thumb print.

[Paul]

Actually the highest level cloak hides 99.5% of your mass. So a 100000 ton ship would look like a 500 ton fighter. A 30 billion ton ship would still be 150 million tons, though - so still quite a sensor blip.

[Micro102]

....you cant just keep cramming some sort of anti detection devices into your ship until it's invisible?

[Metalax]

Some designs for the civilian part of such a wandering fleet, using just the starting allocation of research points.

Spoiler (click to show/hide)

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Tribal class Colony Ship    650000 tons     5552 Crew     27800.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 27 MSP    Max Repair 38 MSP
Colonists 2000000    Cargo Handling Multiplier 300   

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 4,950,000 Litres    Range 137.0 billion km   (1375 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Need 250 of these to carry the typical starting population. Takes 1:09:20 to load/unload.

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Victory class Freighter    650000 tons     3998 Crew     8865.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 9 MSP    Max Repair 38 MSP
Cargo 500000    Cargo Handling Multiplier 250   

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 6,300,000 Litres    Range 174.3 billion km   (1750 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Sufficient cargo space for 1 research lab, 20 regular installations, 200 infrastructure or 250,000 tons of minerals. Takes 20:00 to load/unload.

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Agincourt class Troop Transport    650000 tons     5494 Crew     15935.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 15 MSP    Max Repair 40 MSP
Troop Capacity: 200 Battalions    Cargo Handling Multiplier 230   

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 6,400,000 Litres    Range 177.1 billion km   (1777 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Carries 40 brigades of troops. Use these to carry the engineers. Takes 1:02 to load/unload.

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Ark Royal class Tanker    650000 tons     33546 Crew     108985.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 105 MSP    Max Repair 38 MSP

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 505,100,000 Litres    Range 13977.1 billion km   (140305 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purpose

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Resolution class Fuel Harvester    650000 tons     8334 Crew     14455.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 14 MSP    Max Repair 60 MSP
Fuel Harvester: 100 modules producing 2000000 litres per annum

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 10,400,000 Litres    Range 287.8 billion km   (2888 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
It would take just over 250 years to refill a single Ark Royal tanker using one of these. Should probably operate ten resolutions per Ark Royal.

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Illustrious class Asteroid Miner    650000 tons     13374 Crew     20555.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 20 MSP    Max Repair 120 MSP
Asteroid Miner: 100 module(s) producing 1000 tons per mineral per annum

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 9,400,000 Litres    Range 260.1 billion km   (2611 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes

Code: [Select]

King George V class Tug    650000 tons     13878 Crew     25885.6 BP      TCS 13000  TH 73500  EM 0
5653 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 25 MSP    Max Repair 100 MSP
Tractor Beam     

Ion Engine E1 (490)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 21,300,000 Litres    Range 589.8 billion km   (1207 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Used to tow our Shipyards.

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Vanguard class Maintenance Vessel    650000 tons     57923 Crew     90895.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1000     PPV 0
Annual Failure Rate: 3380%    IFR: 46.9%    Maint Capacity 117400 MSP    Max Repair 200 MSP    Est Time: 5.39 Years
Maintenance Modules: 350 module(s) capable of supporting ships of 70000 tons

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 5,550,000 Litres    Range 153.6 billion km   (1541 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a military vessel for maintenance purposes
At least ten of these to cover maintenance.

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Invincible class Support Vessel    650000 tons     13202 Crew     37955.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 2017036 MSP    Max Repair 38 MSP

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 5,200,000 Litres    Range 143.9 billion km   (1444 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
The maintenance supplies hauler.

I'd expect it to take at least 100 years to build up a sufficiently large fleet using these. A good deal of time would be sunk into expanding the shipyards to a sufficient size. Which of course would imply higher levels of tech researched and incorporated over that time. If you took a smaller population say 50 million you could probably do it in around 20 years.

Of course you would also have to build your military part of the fleet as well.

[Metalax]

....you cant just keep cramming some sort of anti detection devices into your ship until it's invisible?

No, there is no additional effect from multiple cloaking devices.

[MrWiggles]

Actually the highest level cloak hides 99.5% of your mass. So a 100000 ton ship would look like a 500 ton fighter. A 30 billion ton ship would still be 150 million tons, though - so still quite a sensor blip.

Whoops, my dyslexia there. Heh.

[Micro102]

Ok i'm starting to think there is a limit to ship building.....You cant just make a ship carry 1 million cryo chambers, 1 million cargo holds, and 1 million of everything else and keep adding engines and crew quarters and stuff until it stabilizes?

[Emperor_Jonathan]

No you cannot. For example, as you place more engines the speed the engine gives gets less and less.

[Micro102]

Awww

Anyway i have a ship design that i would like to get rid of but can't figure out how. Some help?

[MrWiggles]

Some designs for the civilian part of such a wandering fleet, using just the starting allocation of research points.

Spoiler (click to show/hide)

Code: [Select]

Tribal class Colony Ship    650000 tons     5552 Crew     27800.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 27 MSP    Max Repair 38 MSP
Colonists 2000000    Cargo Handling Multiplier 300   

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 4,950,000 Litres    Range 137.0 billion km   (1375 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Need 250 of these to carry the typical starting population. Takes 1:09:20 to load/unload.

Code: [Select]

Victory class Freighter    650000 tons     3998 Crew     8865.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 9 MSP    Max Repair 38 MSP
Cargo 500000    Cargo Handling Multiplier 250   

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 6,300,000 Litres    Range 174.3 billion km   (1750 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Sufficient cargo space for 1 research lab, 20 regular installations, 200 infrastructure or 250,000 tons of minerals. Takes 20:00 to load/unload.

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Agincourt class Troop Transport    650000 tons     5494 Crew     15935.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 15 MSP    Max Repair 40 MSP
Troop Capacity: 200 Battalions    Cargo Handling Multiplier 230   

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 6,400,000 Litres    Range 177.1 billion km   (1777 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Carries 40 brigades of troops. Use these to carry the engineers. Takes 1:02 to load/unload.

Code: [Select]

Ark Royal class Tanker    650000 tons     33546 Crew     108985.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 105 MSP    Max Repair 38 MSP

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 505,100,000 Litres    Range 13977.1 billion km   (140305 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purpose

Code: [Select]

Resolution class Fuel Harvester    650000 tons     8334 Crew     14455.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 14 MSP    Max Repair 60 MSP
Fuel Harvester: 100 modules producing 2000000 litres per annum

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 10,400,000 Litres    Range 287.8 billion km   (2888 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
It would take just over 250 years to refill a single Ark Royal tanker using one of these. Should probably operate ten resolutions per Ark Royal.

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Illustrious class Asteroid Miner    650000 tons     13374 Crew     20555.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 20 MSP    Max Repair 120 MSP
Asteroid Miner: 100 module(s) producing 1000 tons per mineral per annum

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 9,400,000 Litres    Range 260.1 billion km   (2611 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes

Code: [Select]

King George V class Tug    650000 tons     13878 Crew     25885.6 BP      TCS 13000  TH 73500  EM 0
5653 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 25 MSP    Max Repair 100 MSP
Tractor Beam     

Ion Engine E1 (490)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 21,300,000 Litres    Range 589.8 billion km   (1207 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
Used to tow our Shipyards.

Code: [Select]

Vanguard class Maintenance Vessel    650000 tons     57923 Crew     90895.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1000     PPV 0
Annual Failure Rate: 3380%    IFR: 46.9%    Maint Capacity 117400 MSP    Max Repair 200 MSP    Est Time: 5.39 Years
Maintenance Modules: 350 module(s) capable of supporting ships of 70000 tons

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 5,550,000 Litres    Range 153.6 billion km   (1541 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a military vessel for maintenance purposes
At least ten of these to cover maintenance.

Code: [Select]

Invincible class Support Vessel    650000 tons     13202 Crew     37955.6 BP      TCS 13000  TH 15000  EM 0
1153 km/s     Armour 3-668     Shields 0-0     Sensors 5/5/0/0     Damage Control Rating 1     PPV 0
Maint Capacity 2017036 MSP    Max Repair 38 MSP

Ion Engine E1 (100)    Power 150    Fuel Use 10%    Signature 150    Armour 0    Exp 1%
Fuel Capacity 5,200,000 Litres    Range 143.9 billion km   (1444 days at full power)

Active Search Sensor S10-R100 (1)     GPS 1000     Range 10.0m km    Resolution 100
Active Search Sensor S10-R20 (1)     GPS 200     Range 2.0m km    Resolution 20
Active Search Sensor S10-R1 (1)     GPS 10     Range 100k km    Resolution 1
Thermal Sensor TH1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km
EM Detection Sensor EM1-5 (1)     Sensitivity 5     Detect Sig Strength 1000:  5m km

This design is classed as a commercial vessel for maintenance purposes
The maintenance supplies hauler.

I'd expect it to take at least 100 years to build up a sufficiently large fleet using these. A good deal of time would be sunk into expanding the shipyards to a sufficient size. Which of course would imply higher levels of tech researched and incorporated over that time. If you took a smaller population say 50 million you could probably do it in around 20 years.

Of course you would also have to build your military part of the fleet as well.

I don't think your tug can carry your ship yards. The shipyard to build those monsters are 1.3mt. Even if it could, I think it'll be traveling at an extremely crawling pace, like double digits if that.

Although I havent messed with tugs to much.

[Metalax]

Yeah, the design is more of a placeholder using the available tech. By the time you've managed to get a shipyard up to size and got the construction of other parts of the fleet underway, research should have pumped engine tech up to a point where the tug will be viable. It's pretty much always going to be the slowest part of the fleet when attached to the shipyard.

Edit:
Actually just did a copy of the tug and added 1.3m deadweight and still getting a speed of 1884 km/s.
So it looks like it should work well.
Edit 2: just FOOB's a tug and spaceyard, the speed is indeed 1884 for the pair combined.

[Farce]

Just out of curiosity, as I'm not playing this, but can you pull something with multiple tugs?  Or if not, have a tug chain, with tugs pulling tugs pulling stuff that need to be hauled?  If yes, would they increase speed and such?

[MrWiggles]

Probably can. From how I understand tugging to work, it can tug anything in space. You may not be able to tug items that are moving under their own power though. I don't really know.