[Spaceships] Homeworld-style Mobile Shipyard at TL9?

[vicky_molokh]

Greetings, all!

In your opinion, what is the typical build of a mobile shipyard (like the ones in Homeworld 2, or the Mothership in HW) at TL9? I'm assuming that Stardrives are TL^, but otherwise am hoping to minimize ^'s. For those who haven't played, it's a huge ship which houses hangars, mining and research facilities etc. to produce other spacecraft from scratch (e.g. from an asteroid belt's resources, assuming a rich belt).

Thanks in advance!

[D10]

What exacly do you want to know ?

I assume its something huge, like a middle sized city.

[vicky_molokh]

Originally Posted by D10

What exacly do you want to know ?

I assume its something huge, like a middle sized city.

At least one sample build which would suffice for the task. How many workshop/refinery/factory/hangar/etc. systems and what skill set for operators for what ship SM etc.

[jacobmuller]

Haven't added up any numbers but, from the latest Spaceships, it seems that it all depends how fast you want it built and what size.

[vicky_molokh]

Originally Posted by jacobmuller

Haven't added up any numbers but, from the latest Spaceships, it seems that it all depends how fast you want it built and what size.

I almost don't care about speed. I care about the fact that this shipyard will be able to design and produce ships up to and including a certain SM at its TL.

[cccwebs]

What maximum size ship can the mobile shipyard construct? Looking through Spaceships, it would seem the maximum size that can fit through hangar bay doors is SM-3 if using a combines 3-6 bays. The internal construction facilities would take place inside a hangar bay, so just design the shipyard to be at least +3 SM greater than the largest craft it can build. Add in all the appropriate factories for building the components and refineries for processing the raw materials. The mining operations are probably performed by secondary craft, so make sure to include a couple of extra hangar bays to hold the support craft. You might even get away with having the refineries be on the support craft also. That way the craft could mine and process the raw materials then deliver the processed materials to the shipyard for construction use.

[Ulzgoroth]

Do you have SMs in mind for the Mothership and the biggest thing it can build? I played the game, but I don't really know how big those things would be.

Also, the SS6 rules are going to determine an extremely long build time for those ships.

Also, it technically could be an SM +6 ship with one factory...it would just take forever and require building externally. And are you giving the thing any non-stardrives?

[jacobmuller]

I am Hopeless at formating threads (hints graciously accepted - but don't expect much - I can't even publish a blog never a mind a webpage)

Mothership
Craft dST/dHP Hnd/SR HT Move Lwt Load SM Occ dDR Cost
Ama 300 -2/5 13 0.03g 100kton 10kton +12 210ASV 10? $21 Billion

FRONT Power System Details cost Crew
1 Armour (Light Alloy, spread over entire hull) or Hanger? $50M/$10M 0/10W
2 Stardrive $1,000M 10W
3 Control: Comm 3AU; Sensor 3LS; level 10; $200M 20C/10W
4 Habitat 600cabins devoted to full life support for crew $100M+ 10W
5 Habitat 600 cabins of offices, med bay and entertainment, etc $100M+ ?C/10W
6 Robot arm $1,000M 10W
Core Radiation shelter for up to 600 bunks $20M 10W
CENTRE
1 Mining 500tons hour $100M 1C/10W
2-4 Hanger 10,000ton capacity $30M 30W
5,6+Core Factory $15M per hour $15,000M 30W
REAR
1 Power Plant Fusion 50years $1,000M 10W
2-4 Fuel eg $1M $100M -
5-6 Reaction Engine, eg Fusion Rocket 0.03g, 12mps DV $2,000M 20W

Rate of Construction
SM+5 or 6: $15M per day in the factory.
SM+7 to +10: $1.5M per day in the factory plus 12 tons per hour for assembly in the hanger.
SM+11 or bigger: $1.5M per day factory time plus 4 tons per hour assembly alongside.
Reaction Engine Options:
• Mass Driver $300M: can use anything for fuel, eg powered rock = free fuel or $10k/tank. DV 0.3mps/”tank”, 0.01g/drive But requires Power Plant.
• Nuclear Light Bulb $500M: uses hydrogen @ $10M/tank. DV 0.8mps/tank, 0.01g/drive.
• Fusion Pulse Drive $1,000M: uses nuclear fuel pellets @ $250M/tank. DV 5mps/tank, 0.02g/drive.
• Fusion Rocket $1,000M: uses either hydrogen @ $10M\tank or Water @ $100k/tank. DV depends on thrust and fuel but from 2-12mps/tank, 0.005g-0.03g/drive. I’d vote for water @ DV4mps, 0.015g.
• Antimatter Thermal Rocket $500M: uses Antimatter catalyzed fuel @ $60,000M/tank. DV1.8mps/tank, 0.1g. Can be high thrust and/or use water for x2/3/6 thrust and scaled DV.

[Sam Baughn]

Originally Posted by jacobmuller

I am Hopeless at formating threads (hints graciously accepted - but don't expect much - I can't even publish a blog never a mind a webpage)

The [code] tag lets you post in a fixed width font and keep your tabs. Just write it in Notepad, type [code], paste it and close the tag in the usual way.

Like so:

Craft 	dST/dHP Hnd/SR 	HT	Move 	Lwt 	Load 	SM 	Occ 	dDR 	Cost
Ama 	300 	-2/5 	13 	0.03g 	100kton	10kton 	+12 	210ASV 	10? 	$21 Billion

[SpaceGurper]

IIRC the Mobile Shipyard could take a beating and beat back multiple foes at once.

Same with the Mothership sure it can't take on an entire large scale armada but could handle most destroyers and lower without too much difficulty one on one or 5 destroyers to 1 MS/Shipyard

But what you wrote there Jacob doesn't include any armaments.