|
Post by jfmoyen on Nov 9, 2019 17:13:05 GMT -6
Sorry for the perhaps silly question, but I cannot find the formula for estimating the ASW rating of a ship. The manual says
"Ship types capable of ASW warfare are DD, MS, CV and CVL. Ships capable of ASW warfare have an ASW rating. The ASW rating of a ship depends on displacement and installed equipment"
Ok, but this is not very precise. Elsewhere in the forum I found that "even values of tonnage allow to benefit from ASW increments" (?) and "Minesweeping gear reduces ASW rating" - Maybe. Is there a more detailed description of the formula somewhere ?
Thanks !
|
|
|
Post by JagdFlanker on Nov 9, 2019 18:11:59 GMT -6
is this what you are looking for?
|
|
|
Post by jfmoyen on Nov 10, 2019 3:25:49 GMT -6
is this what you are looking for?
No, not quite, that I did find. It's more about predicting the ASW rating at design stage. I'm in the design window, building a DD: how can I know or estimate its ASW rating? Or, I'm in the ship list window you are showing, why are some ships at 5 and some at 3? On another level, out of curiosity for the internal workings of the game. How is this value calculated? Is this purely deterministic, a calculation I could emulate in a spreadsheet, or is there a random aspect - and even so, it has to be randomised but based on well defined parameters?
|
|
|
Post by jfmoyen on Nov 10, 2019 3:29:27 GMT -6
Or, to rephrase. The question arose when I was trying to rebuild an elderly fleet DD as a trade protection boat. Given a certain hull, what can I do to max it's efficiency?
|
|
|
Post by secondcomingofzeno on Nov 10, 2019 3:33:42 GMT -6
Or, to rephrase. The question arose when I was trying to rebuild an elderly fleet DD as a trade protection boat. Given a certain hull, what can I do to max it's efficiency? Make sure it doesn't have mines or minesweeping (IIRC), give it as many depth charges, racks, and ASW mortars as you can.
|
|
|
Post by trifler on Nov 10, 2019 4:39:26 GMT -6
Ships seems to start with 1 ASW point and get +1 for every 200 tons, at least for small ships like destroyers and corvettes. A 400 ton destroyer has 3 ASW points and a 600 ton has 4, for example. I haven't checked to see if this ratio remains steady above 1000 tons. EDIT: Based on subsequent posts in this thread, this caps out at 800 tons. Any additional ASW after that comes from equipment.
- I believe carriers have a fixed ASW rating that is not affected by the design. - If you just want ASW and don't expect the ship to fight, then note that higher numbers of torpedo launchers do increase the maintenance cost.
Also what secondcomingofzeno said:
|
|
|
Post by jfmoyen on Nov 10, 2019 5:50:51 GMT -6
Ships seems to start with 1 ASW point and get +1 for every 200 tons, at least for small ships like destroyers and corvettes. A 400 ton destroyer has 3 ASW points and a 600 ton has 4, for example. I haven't checked to see if this ratio remains steady above 1000 tons. - I believe carriers have a fixed ASW rating that is not affected by the design. - If you just want ASW and don't expect the ship to fight, then note that higher numbers of torpedo launchers do increase the maintenance cost. Also what secondcomingofzeno said: Thanks! Does speed affect the rating? Also, out of interest, what is the logic in mines or minesweeping equipment being detrimental to the ASW performance? I do not quite see a contradiction here?
|
|
|
Post by jfmoyen on Nov 10, 2019 5:59:39 GMT -6
Ships seems to start with 1 ASW point and get +1 for every 200 tons, at least for small ships like destroyers and corvettes. A 400 ton destroyer has 3 ASW points and a 600 ton has 4, for example. I haven't checked to see if this ratio remains steady above 1000 tons. - I believe carriers have a fixed ASW rating that is not affected by the design. - If you just want ASW and don't expect the ship to fight, then note that higher numbers of torpedo launchers do increase the maintenance cost. Also what secondcomingofzeno said: Thanks! Does speed affect the rating? Also, out of interest, what is the logic in mines or minesweeping equipment being detrimental to the ASW performance? I do not quite see a contradiction here? Also, are all these things written somewhere, in the manual or a reference document, or are these empirical findings, personal observations or reverse engineering of game saves and such?
|
|
|
Post by captainloggy on Nov 10, 2019 6:30:38 GMT -6
Minesweeping equipment wouldn't make the vessel worse at ASW, it would simply not be spending as much time on ASW because its main pastime would be to sweep mines, hence the lower ASW rating.
|
|
|
Post by janxol on Nov 10, 2019 6:41:42 GMT -6
Minesweeping halves the ASW rating,as it is assumed the ships duties will be split between minesweeping and ASW patrol/escort. Speed has no effect on rating, you dont need fast ships to hunt submarines, they are incredibly slow underwater. Carrier ASW is constant and depending on technology level. A 12000 ton CVL will have the same ASW as 100-plane CV. The best dedicated ASW ships are corvettes. They can bring a lot of ASW for very low maintenance and costs. Personally I have found 600 ton KE's to be the best for their value, though if you want to cram in all the possible ASW equipment you need 900 ton KE's. Repurposing older destroyers is also a good tactic, though they tend to have higher maintenance costs.
|
|
|
Post by brygun on Nov 10, 2019 7:45:20 GMT -6
tip: When building small corvettes for ASW work I put "SH" for sub hunter in the start of the class name. That way when war starts I can sort the ships-in-service by class to easily select them all and put them on trade protection.
|
|
|
Post by janxol on Nov 10, 2019 9:02:33 GMT -6
I just put all corvettes on TP so theres no need for that. It's all they're for anyway.
|
|
|
Post by brygun on Nov 10, 2019 9:41:25 GMT -6
KE with their lower speed come at a cost of 2.5 per ton so make cheaper foreign service mass. Decent cruisers cost 3 - 3.5 per ton.
|
|
|
Post by jwsmith26 on Nov 10, 2019 10:02:40 GMT -6
Or, to rephrase. The question arose when I was trying to rebuild an elderly fleet DD as a trade protection boat. Given a certain hull, what can I do to max it's efficiency? Make sure it doesn't have mines or minesweeping (IIRC), give it as many depth charges, racks, and ASW mortars as you can. A minor correction - carrying mines does not impact a ship's ASW rating. Being equipped as a minesweeper does reduce the ship's ASW rating.
|
|
|
Post by janxol on Nov 10, 2019 10:34:20 GMT -6
KE with their lower speed come at a cost of 2.5 per ton so make cheaper foreign service mass. Decent cruisers cost 3 - 3.5 per ton. Ships set to trade protection still count towards foreign station requirements if stationed in the correct zones. My colonial gunboats also go into trade protection when at war and all is well.
|
|