pcasey
Junior Member
Posts: 58
|
Post by pcasey on May 30, 2019 10:10:57 GMT -6
I'm trying to figure out how the game calculates the maintenance cost of various warships. Observationally, I'm seeing really large differences in costs between facially very similar ships so I'm hoping somebody here can explain the cost model to me. Example #1: The 44,500 ton, 23knot, 11X15" SMS Hessen ... 982/year Example #2: The 47,500 ton, 28knot, 12X15" SMS Derfflinger ... 1,419/year (almost 50% more) Example #3: The 28,000 ton, 31know, 80 plan, SMS Europa ... 572/year (almost 50% less) I can't figure out why the Derfflinger is that much more expensive. She's essentially the same size, has all of 1 more gun, less armor, and a somwhat bigger machinery plant than the Hessen. If machinery was what made things expensive though I'd have expected the Europa (which has 100k horsepower relative to the hessen's 65k than the Hessen) to cost a lot more than it does. When I look at the "build" cost in the ship editor: SMS Hessen shows a total of 144k SMS Derfflinger shows a total of 188k So Derfflinger costs 188/144 = 1.31X as much as Hessen But Derfflinger's maintenance cost is 1419/982 = 1.45X as much as Hessen Why is the maintenance price on my old battlecruiser so expensive? SMS Hessen  SMS Derfflinger  |
|
|
|
Post by marauder on May 30, 2019 10:23:46 GMT -6
Machinery definitely seems to play a huge part in this, especially considering that Derfflinger was built(or refitted) for 31 knots, but is slowed down by the torpedo bulges.
I've also noticed that the Hessen is still coal-fired, while the Derfflinger is oil-fired. In addition, you seem to have a lot of secondaries and tertiaries on your BC, while your BB only has a "standard" amount of them.
I guess in the end it's mainly the machinery plus a ton of other things adding up that are driving up the maintenance. Do you have the Derfflinger stationed overseas, perhaps? Ships on colonial station eat up more maintenance than ships stationed in your home areas.
|
|
pcasey
Junior Member
Posts: 58
|
Post by pcasey on May 30, 2019 10:30:33 GMT -6
If I look at the prices of the machinery in the build editor though they don't seem to add up.
Hessen generates 62k hp, from coal, for a price of $18,743 out of a total ship price of 144k
Derfflinger generates 161k hp, from oil, for a price of $57,442 out of a total ship price of 188k
Europa generates 101k hp, from oil, for a price of $23,362 out of a total ship price of 75k
If I bring up the editor and crank up Europa's machinery plant to 168k hp, the price of Europa's 168k HP is ony $32,500
Why does 161k of HP in Derfflinger cost me almost twice as much as 168k of hp on Europa?
|
|
|
|
Post by archelaos on May 30, 2019 10:47:34 GMT -6
If I look at the prices of the machinery in the build editor though they don't seem to add up. Hessen generates 62k hp, from coal, for a price of $18,743 out of a total ship price of 144k Derfflinger generates 161k hp, from oil, for a price of $57,442 out of a total ship price of 188k Europa generates 101k hp, from oil, for a price of $23,362 out of a total ship price of 75k If I bring up the editor and crank up Europa's machinery plant to 168k hp, the price of Europa's 168k HP is ony $32,500 Why does 161k of HP in Derfflinger cost me almost twice as much as 168k of hp on Derfflinger? Engine cost seems to be major part (after all armour do not need a lot of costly maintenance  ). Then crew numbers are probably important. So the cost difference between Hessen and Derfflinger seem about right as it has bigger crew and almost 3x bigger engine.
On the other hand, I do not know what makes Europa engine so much cheaper.
|
|
|
|
Post by namuras on May 30, 2019 12:05:18 GMT -6
I'm trying to figure out how the game calculates the maintenance cost of various warships. Observationally, I'm seeing really large differences in costs between facially very similar ships so I'm hoping somebody here can explain the cost model to me. Example #1: The 44,500 ton, 23knot, 11X15" SMS Hessen ... 982/year Example #2: The 47,500 ton, 28knot, 12X15" SMS Derfflinger ... 1,419/year (almost 50% more) Example #3: The 28,000 ton, 31know, 80 plan, SMS Europa ... 572/year (almost 50% less) I can't figure out why the Derfflinger is that much more expensive. She's essentially the same size, has all of 1 more gun, less armor, and a somwhat bigger machinery plant than the Hessen. If machinery was what made things expensive though I'd have expected the Europa (which has 100k horsepower relative to the hessen's 65k than the Hessen) to cost a lot more than it does. When I look at the "build" cost in the ship editor: SMS Hessen shows a total of 144k SMS Derfflinger shows a total of 188k So Derfflinger costs 188/144 = 1.31X as much as Hessen But Derfflinger's maintenance cost is 1419/982 = 1.45X as much as Hessen Why is the maintenance price on my old battlecruiser so expensive? SMS Hessen SMS Derfflinger For the CV: you have to remember the Airgroups aswell... they add a substantial amount of maintenance. For all ships there seems to be a modifier by age. The older they get, the more costly the are. This can be somewhat offset by refits. I assume the maintenance for ships is roughly: (buildcost / X + complement * Y) * agemodifier |
|
|
|
Post by mycophobia on May 30, 2019 12:17:05 GMT -6
There is also a modifier based on where they are stations, all ship cost more when away from homewaters, and even more when at somewhere with limited base capacity.
I also suspect things like speed focused engine increase upkeep compared to normal and reliable ones, but I am not certain.
|
|
|
|
Post by dorn on May 30, 2019 12:23:30 GMT -6
This is some costs of my aircraft carriers including aircrafts in my finished game.
As you can see it is about 6-8k month per airplane, so practically ship is about half of the costs. For comparison I have capital ships costs.
I have even cost per 10 years - this is in peace conditions. Just for comparison costs of 4800 tons colonial cruiser is: construction: 20M
maintenance: 131k
Costs per 15 years: 43.6M
So you can have 10 such cruisers for one large about 60000 tons battleship or aircraft carrier later in game. However earlier in 20s usually only 6-7 such cruisers you can built for battleship or carrier.
|
|
|
|
Post by aeson on May 30, 2019 13:40:54 GMT -6
There is also a modifier based on where they are stations, all ship cost more when away from homewaters, and even more when at somewhere with limited base capacity. Being stationed overseas adds 20% more upkeep in peacetime but doesn't affect wartime upkeep. I have not noticed a surcharge for being over base capacity in an area. |
|
|
|
Post by alsadius on May 30, 2019 14:22:57 GMT -6
There is also a modifier based on where they are stations, all ship cost more when away from homewaters, and even more when at somewhere with limited base capacity. Being stationed overseas adds 20% more upkeep in peacetime but doesn't affect wartime upkeep. I have not noticed a surcharge for being over base capacity in an area. I thought over capacity led to crew quality reductions and repairs, not direct cash costs. But I haven't tested it seriously. |
|
|
|
Post by mycophobia on May 30, 2019 14:29:13 GMT -6
Being stationed overseas adds 20% more upkeep in peacetime but doesn't affect wartime upkeep. I have not noticed a surcharge for being over base capacity in an area. I thought over capacity led to crew quality reductions and repairs, not direct cash costs. But I haven't tested it seriously. I stand corrected then, the budget change I see from moving fleet from sea to Indian Ocean where i not based may just be repair fee from those “engine trouble” message |
|
). Then crew numbers are probably important. So the cost difference between Hessen and Derfflinger seem about right as it has bigger crew and almost 3x bigger engine. 
