Demo Supply Help

[Suicide Junkie]

That depends on the design of the repair ship.

What you want to do is design a ship with lots of solar panels and supply tanks, and include that with your fleet.
Once you get the technology, you can replace all of the panels with a quantum reactor and get infinite supplies.

Ships in a fleet share supplies, so each turn your supply tanker will top off your warships, and generate more with the panels/reactor.