Rough estimate:
(CT:HG) Using a 10000 dT hull with M-3 at TL12 we can skim and process 7300 dT fuel in 6 days, craft cost MCr 4000 in bulk.
Deducting a month for we can do 55 trips per year
We deliver 55 * 7300 dT = 400 000 dT refined fuel to mainworld orbit.
Cost is dominated by capital cost estimated with the mortgage MCr 4000 / 240 *12 = MCr 200, add another MCr 100 to cover crew(s) salaries, life support, and maintenance.
We have delivered 400 000 dT fuel for operating cost MCr 300, or Cr 750 / dT.
I think we are going broke rather quickly...
(CT:HG) Using a 10000 dT hull with M-1 at TL12 we can skim and process 8500 dT fuel in 12 days, craft cost MCr 1700 in bulk.
Deducting a month for we can do 27 trips per year
We deliver 27 * 8500 dT = 230 000 dT refined fuel to mainworld orbit.
Cost is dominated by capital cost estimated with the mortgage MCr 1700 / 240 *12 = MCr 85, add another MCr 50 to cover crew(s) salaries, life support, and maintenance.
We have delivered 230 000 dT fuel for operating cost MCr 135, or Cr 590 / dT.
Broke.
I quite disagree with your numbers, if you can buy your ship without a mortgage.
I also see your opperating costs quite high:
Maintenance is clearly 1/1000 of the cost, and I see you crew costs quite overstimate.
A crewmwmber costs you Cr 4000 per month (4 weeks, so 13 months a year) in life support plus salary. Let's say an average of Cr 130000 a year (10000 a month).
So, with a maintenance cost of MCr 4 in the M-3 ship, to reach you MCr 100 opearating cost, you'd need about 740 crewmembers, quite a high number for a 10000 dton ship...
This ship would have 1700 dtons of drives, so it would need 17 engineers. Add to this 5 command staff and 30 maintenance and we come to 52 crewmembers. This would cost you about Mcr 6.76 (let's say 7) per year, added to the Mcr 4 for maintenance we have about MCr 11 a year for operating costs.
If you have the initial money by selling shares (let's say 4000 MCr shares), your opperating costs are you only annual expenses. If you can bring to the starport (according your numbers) about 400 000 fuel dtons a year, your income would be MCr 40 is unrefined or 200 if refined (if your ships have fuel processors you have the time to refine it in the return trip).
So, your yearly balance would be about MCr 29 if the fuel is unrefined or MCr 189 if refined. If you pay it as dividends, it eould be about 7000 Cr per action and year if unrefined and about Cr 47000 per action if refined, so about a 0.7% return of your investment in the first case and about a 4.7% in the second one. I don't see this business as broken...
And in the case of the M-1 ship you said, with only 500 dtons of drives, you need only 5 engineers, so your crew is down to 40 members (about MCr 5.2 per year) and your maintenance only MCr 1.7, so let's say about MCr 7 yearly opperating costs.
The initial cost is Mcr 1700, so let's say 1700 1Mcr shares.
If it brings 230 000 dtons of fuel, its income would be about 23 million if unrefined and about 115 if refined
With profits of Mcr 16 and 108 respectively, the dividends could be about Cr 9000 and 63000 per annum (so a yearly return of 0.9% or 6.3%) respectivelly.
Again, no broken company...