Aeson
Posts: 784
Joined: 8/30/2013 Status: offline
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Here is an old thread with formulas for computing the construction and maintenance costs of ships. A quick test using the Ancient Galaxy scenario suggests that the forms of the formulas are accurate, but that the construction cost multiplier should be 10 and that the multiplier on ship size should be 1 instead of 1.5, as suggested in the second reply to the thread. Note that I only checked against one data point, so it is possible that the accuracy of the formulas was coincidental. Specifics on the test: I checked the Shadow II Escort design which is provided for the player at the start of the Ancient Galaxy scenario. The game reported its construction cost as 2763 credits and its maintenance cost as 598 credits per year. I then recorded the types and quantities of resources required for the vessel (29 Si @ $1.1/unit, 35 Au @ 1.3, 14 polymer @ 1.2, 24 carbon fibre @ 0.9. 25 Kr @ 1.3, 18 Cr @ 1.3, 37 Steel @ 0.8, 11 Ir @ 1.3, 4 dilithium @ 1.3, 2 Tyderios @ 1.3, 8 Pb @ 1.2, 6 Osalia @ 2.5, and 8 Ar @ 1.3), the command center's maintenance modifier (-4%), the size of the vessel (139), and the maintenance modifiers from the government (-10%), species in the empire (-1%), and empire leader (no modifier). Using the formulas from the linked thread with the modifications suggested in the second reply to that thread, I came up with a construction cost of 2793 credits and a maintenance cost of 670.7 credits/year, which becomes 597.6 credits per year after accounting for the ship maintenance modifiers from the government type and species in the empire (stacking modifiers multiplicatively).
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