The problem is that life support in closed environments is something we have a pretty solid knowledge about. There are no fudge factor available for our Traveler spaceships. Life support cost is the same whether you make a jump or not, so you can't invoke jumpspace wear and tear. You're stuck with plain old Real Universe physics, and once you've covered food, air, and water, you're pretty much out of things to pay for.dlpulver wrote:What I get from this is that "supplies for the Life Support" system mean something other than food or water, and presumably oxygen as it is trivial to crack water for air. I think that could break down into two elements:
* Replacement of filters, rapidly wearing-out parts or specialized catalysts that are in addition to the generalized MNT cost and specific to manned ships.
* General cleaning agents and fresher stock (not likely to be more than $200/month, though).
And anything you can come up with is likely to be per occupant rather than per stateroom.
That's most likely a simplification for game purposes. And I don't think maintenance covers all repairs. Just minor, routine ones.The argument that Maintenance already covers all repairs and parts is compelling but not entirely certain. MNT cost is, after all, strictly based on a percentage of ship cost.
All very well, but unless you can explain just what causes that higher cost, you're not explaining anything; you're essentally saying "Because I said so!"A possibly justifiable argument would be that certain components, specifically staterooms, impose a far higher maintenance burden then their purchase cost indicates. (Consider a stray cat: it's free, but you keep paying and paying... sorry. Just had to visit a vet and got the bill...)
But wood is cheaper than high quality metal, but it can cost more to maintain a wooden ship.
Not to my knowledge. If there had been, it wouldn't be a problem.Is there anything in Traveller that would explain why the cost per stateroom is high?
You really don't want to introduce expenses that would also apply to space habitats. That would muck up a different part of the setting.Perhaps there is a semi-ablative radiation shielding grid included in each stateroom and low berth.
Perhaps the artificial gravity generation - based on corridor length slices and rooms included in each stateroom - has an unusually high wear-out rate and replacement cost.
There's a rule in one of the early issues of JTAS. The one with the article about asteroid mining IIRC. But I can't recall how compatible it was with the CT life support rules.My major concern, however, is not the cost - I've lived with Cr 2000/stateroom for a long time - but the question of how the life support can be replenished for trips out from civilization and how much extra supplies take up. "Spartan" food, water, etc. should be about 0.01 ton per month, I think, but I don't know about the other material.