Most streamlined IJ PLANE research/building approach Scen1

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mind_messing
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by mind_messing »

ORIGINAL: obvert
ORIGINAL: GetAssista

WRT all this streamlined stuff. I don't see much point in trying to outline IJ plane management in an intermediate-simple way. When you are a beginner, you should just start with the simple "research your fighters and use chains to your advantage". When you progress, you are perfectly capable of reading what's been covered extensively on the forum about pros and cons of all the flying zoo Japan has, and about tastes and strategy of different players. And form your own opinion.
ORIGINAL: obvert
The Lily with two 100kg bombs is inconsequential. Just use IJN 1E.

The Patsy can be fine but it won't. change much late. A few P-40s or Hellcat NF on Allied rear area bases deal with this threat pretty easily. It's fast and can be a decent kami as well, but use another quick airframe (Helens are fine, FB better), if you want to streamline.
Oy, I'm sure Lowpe would disagree with you on the first one ) There is not enough IJN to put in everywhere where you can expect enemy transports inside a 9-11 hex range. Also only Grace has comparable coverage as a DB, and it arrives late.

WRT second one, just recall that the number of bases to cover against is roughly proportional to range squared. That's a lot of effort spent.
ORIGINAL: mind_messing
Disagree again here, it's a dive bomber, it's IJA and there's never enough IJN 1E's to go around come the late war.

Having played both sides late I agree and concede the Lily can be useful, and of course any good player can make use of any good airframe. I am an advocate of using virtually anything if you feel it'll be effective in a certain circumstance and will be more effecient than changing production. But, it's a 2E plane. I'd rather have 2x 1E at a base than half as many Lilys.

I personally cross train the plentiful and very experienced IJAAF pilots for low level naval bombing from day one. So I end up with plentiful kami pilots, EXP 70 piltos with 80 ground and 70+ low naval. These guys flying IJAAF 2E or 1E mid-war can hit shipping with bigger bombs than the Lily. So that has worked for me. I find having enough airfield capacity and air support at a specific point the limiting factor to hit Allied invasions or naval movements mid-war, not whether I've got enough IJN planes.

Generally the Allies aren't doing multiple big ops simultaneously, and unless you have level 9 fields everywhere (which certainly isn't a a good way to save on supply for the late war) it's better to use 1E against naval forces. The standard 2E Helens (or Peggy-T) can then add to whatever is happening close in from bases farther away, and have slightly better range than the Lily. The Peggy is best, and although I fend them not as effective as I'd like for torpedo attacks, as low level naval strike planes (kami or not) they're excellent.

I build (and advocate building) a lot of different airframes, but this is a thread about limiting production, so my comments followed that line of thinking.

Now there's a variation that hadn't occurred to me. I've been training LowN for kami pilots for the late war, but not for the frontline squadrons. Makes sense, will steal that. Only reservation from me would be the tactical ramifications of having a large portion of your air force forced to operate at 6000ft or less against Allied shipping...

I still like the accuracy bonus from the dive bombers, however.

ORIGINAL: Alpha77

Saving supply, factory slots and HI, which also puts less strain on fuel/oil..

I do not like Kamikazes, so do not plan to use them (reasons already given). I know they can get some hits, I have played Allies to mid 44 on the receiving end, they sank 2-3 CVEs and 20+ transports (vs. AI). How many were shot down however, is another butchers bill.

I also would not use "manpower bombing", even if morality is not part of the game. I am a bit crazy you know.

@mind messing plus obvert: Thanks for the links and detailed thoughts on the topic.

So, how exactly will streamlining help? It strikes me that if you're going for a restrained industry strategy in the first year that you need to expand at some point, and the supply cost still gets paid regardless (to expand R&D factories/convert and repair existing factories to new models).

Any supply savings would be marginal and not worth the tactical handicap IMO (but happy to be proved wrong if someone wants to crunch the numbers)

As for kamis, if you've not played Japan in 1945, you may not be aware of the multitude of squadrons that arrive flying biplanes and other trainer aircraft that have no function other than to facilitate training and kamikaze strikes. If you've planned properly, there won't be a need for them to be training, so it just remains to leverage them for kamikaze missions...
ORIGINAL: Alpha77
ORIGINAL: RangerJoe

Some people like the Lily DB to use against the Fletcher class and other DDs wandering around the Japanese rear areas.

Good idea, Fletcher (and Gearing etc.) are very durable, how many 100kg will it take to sink or damage them enough? In mid 43 already there is a lot of 20/40 mm on these ships, if Lily can get through that would be cool. Can I request combat reports of this?

Also another question: Do dive bombers attack PT-boats I mean with a dive not at 100ft. I had 2 or 3 times these PTs in range but DBs would not fly (I know could be other issues, wanna make sure DB fly vs. these. I had only some success with Nick on 100ft vs. PTs aka pest and cholera)


I've used Lily's to take out Fletchers.

The 100kg bombs are much maligned, but they do fine against anything that's not a BB or some of the newer Allied cruisers, though I think the bombs do bounce against the armoured Brit CV's.
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jdsrae
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by jdsrae »

I like this: “...loaded Allied amphibious forces for VP piñatas...”
Currently playing my first PBEM, no house rules Scenario 1 as IJ.
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obvert
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by obvert »

ORIGINAL: mind_messing
ORIGINAL: obvert
I personally cross train the plentiful and very experienced IJAAF pilots for low level naval bombing from day one. So I end up with plentiful kami pilots, EXP 70 pilots with 80 ground and 70+ low naval. These guys flying IJAAF 2E or 1E mid-war can hit shipping with bigger bombs than the Lily. So that has worked for me. I find having enough airfield capacity and air support at a specific point the limiting factor to hit Allied invasions or naval movements mid-war, not whether I've got enough IJN planes.

Now there's a variation that hadn't occurred to me. I've been training LowN for kami pilots for the late war, but not for the frontline squadrons. Makes sense, will steal that. Only reservation from me would be the tactical ramifications of having a large portion of your air force forced to operate at 6000ft or less against Allied shipping...

I still like the accuracy bonus from the dive bombers, however.

While the DB do get a bonus I'd love to test sometime low naval at 1k vs DB diving in and dropping from 4k to 1k. The DB are still subject to low level Allied AA, and they're less durable than the bigger 2E like (also with armour).

I got the low level stuff from rader when I first started playing.

On ASW duty the IJAAF 2E go 50% ASW, train 30% low naval and rest 20%. It takes some months but they're usually not doing as much after the initial expansion.
"Success is the ability to go from one failure to another with no loss of enthusiasm." - Winston Churchill
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obvert
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by obvert »

ORIGINAL: Alpha77

Saving supply, factory slots and HI, which also puts less strain on fuel/oil..

I do not like Kamikazes, so do not plan to use them (reasons already given). I know they can get some hits, I have played Allies to mid 44 on the receiving end, they sank 2-3 CVEs and 20+ transports (vs. AI). How many were shot down however, is another butchers bill.

I also would not use "manpower bombing", even if morality is not part of the game. I am a bit crazy you know.

@mind messing plus obvert: Thanks for the links and detailed thoughts on the topic.

Since you haven't played the late war you may not be aware you'll be using kamis whether you want to or not. Pilots are hard-codeed to crash their plane into ships AND bombers if damaged once kamis are active (and occasionally before IIRC).

Sending DB/TB against Allied shipping late is almost a kami mission many times anyway with the amount of flak they'll encounter. In my Allied game a group of Judys just tried to hit a TF of two CA and 6 DD, and they lost 10 of 25 planes for no hits. [;)]

Manpower is just area bombing. It's what causes fires. You won't need it as much as Japan anyway.

All of your comments make me think you may not be playing the VP system as designed either, in which case you can do what you want but the late war will seem somewhat pointless and hard going. It's very difficult to go through the last years and you'll need some reason to suffer every turn. It's not easy to do and still put up a good fight. The VP system allows losses to seem like victories sometimes.
"Success is the ability to go from one failure to another with no loss of enthusiasm." - Winston Churchill
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RangerJoe
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RangerJoe »

Try Kates at low level with bombs compared to dive bombers. Even mildly trained Kate pilots at 1,000 feet will do nice work, much better than mildly trained Vals or even good Val pilots. Save the torpedoes and wreck a lot of cargo vessels plus naval vessels up to and including American CVs early.

Float Jakes work nicely as well with four 50 kg bombs. They can train as Low Naval, use them that way but then they are ready for Kamikaze actions.
Seek peace but keep your gun handy.

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GetAssista
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by GetAssista »

ORIGINAL: obvert
Sending DB/TB against Allied shipping late is almost a kami mission many times anyway with the amount of flak they'll encounter. In my Allied game a group of Judys just tried to hit a TF of two CA and 6 DD, and they lost 10 of 25 planes for no hits. [;)]
You are talking about combat shipping. But there are always ample opportunities late war to hit transports if you have range. Allies have so much they usually don't bother with watertight convoy routing. This is where Lily and TBs are useful, the former more so because torpedoes are in short supply.
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Lowpe
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by Lowpe »

ORIGINAL: obvert

But I gladly await links to AAR sections or your own combat reports vs. a capable Allied player, where Frances, Peggy T or Lily DB made a big impact like you suggest. I do not mean smashing a bunch of hapless transports which the Lily for sure can do.[:)] Cause I have read many AARs I find them entertaining with some good writers around, but one can also learn. I do not remember instances where above planes did some marvels..but that eg. Frances got shot down like Betty while the Allies landed happyly in the Phillipines, the IJ player said, he might have a chance cause he has updated to the Frances.. yeah for some freighters hit, from which the Allies have literally thousands.

Yeah, I think AARs aren't going to help you.
[/quote]
-----------------------
Tons of examples of Lilly DB doing good work. Their 100kg SAP is the equivalent of a better placed 6" shell from an American Cruiser.
---------------------

Do a little searching, you will find them savaging everything below a battleship. From Mid 1943
Morning Air attack on TF, near Shortlands at 110,132

Weather in hex: Partial cloud

Raid detected at 74 NM, estimated altitude 15,000 feet.
Estimated time to target is 21 minutes

Japanese aircraft
Ki-43-IIb Oscar x 17
Ki-48-IIb Lily x 22

Allied aircraft
P-39D Airacobra x 1

Japanese aircraft losses
Ki-48-IIb Lily: 14 damaged
Ki-48-IIb Lily: 2 destroyed by flak

No Allied losses

Allied Ships
CA Canberra
CA Cornwall, Bomb hits 5, heavy fires, heavy damage
DD Lardner
CL Leander

Aircraft Attacking:
3 x Ki-48-IIb Lily releasing from 3000'
Naval Attack: 2 x 100 kg SAP Bomb
8 x Ki-48-IIb Lily releasing from 1000'
Naval Attack: 2 x 100 kg SAP Bomb
9 x Ki-48-IIb Lily releasing from 2000'
Naval Attack: 2 x 100 kg SAP Bomb

Of course if you are looking to streamline your plane production then you probably don't want her.

Alpha77
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by Alpha77 »

Yes, I have reviewed the airgroup reinforcements of Japan, but I have not planned what to do with these strange groups in 45 doing it when the time comes

Yes, I know Japanese pilots may crash themselves, that is hard coded so we must live with it

Yes, I do not care about VP´s at all..

May write down the other categories of planes, later.. when more time again [:)]
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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

Is there any reason to research anything other than:

A6M2 RUFE - A6M5C/8
KI44 TOJO - KI44C
B6N1 JILL - B6N2/A
D4Y1 JUDY - D4Y3/4
N1K1 GEOR - N1K2/5
KI84 FRNK - KI84/C
A7M2 SAM - A7M2/3

It appears to me that unless you invest numerous factories to research the return is nil?
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RangerJoe
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RangerJoe »

KI-83 as well, not to mention night fighters and the Peggy T
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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

Thanks

You mentioned the Peggy T. Okay due 5/1/44. 2 Nakajima 45 engines. Let's assume you have 500 of the engines. Start the research 12/8/41.

12/8/41 - 5/1/44 is 876 days. If everything goes right your 30 factory is repaired by 876 x 63% or 6/13/43.

Then research from 6/13/43 to 5/1/44 is 10.5 months. Divided by .02 repair per day

1 Factory - 11/19/44
2 Factory - 03/01/44
3 Factory - 12/05/43
4 Factory - 09/26/43
5 Factory - 09/08/43

seems closer to the sweet spot. should i do 5 factories? is it worth it? 1 factory certainly doesn't get you anything but immediate build at start date.
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jdsrae
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by jdsrae »

ORIGINAL: RADM.Yamaguchi

Thanks

You mentioned the Peggy T. Okay due 5/1/44. 2 Nakajima 45 engines. Let's assume you have 500 of the engines. Start the research 12/8/41.

12/8/41 - 5/1/44 is 876 days. If everything goes right your 30 factory is repaired by 876 x 63% or 6/13/43.

Then research from 6/13/43 to 5/1/44 is 10.5 months. Divided by .02 repair per day

1 Factory - 11/19/44
2 Factory - 03/01/44
3 Factory - 12/05/43
4 Factory - 09/26/43
5 Factory - 09/08/43

seems closer to the sweet spot. should i do 5 factories? is it worth it? 1 factory certainly doesn't get you anything but immediate build at start date.

There’s something wrong with your calcs, the last bit where you divide by 0.02.
I haven’t had a coffee yet, but here is how I estimate research durations.
1 factory with 10.5 months to research with engine bonus will generate 2 points/day or about 60 points per month.
So it will advance research by a bit over 1 month every 2 months. Same as 2x size 30 factories.
Divide the 10.5 months by (1+X) with x=0.6 in this case for the 60 points/month, shortens the research duration to 6.5 months (saving 4 months).

1x30 factory in this Peggy T example should start production about 2.5 months earlier than standard.

Note that the research start date is an estimate, it could be plus or minus a few standard deviations from 13 Jun 43 due to die rolls.

The other thing to think about is how many you of this plane you want to build once research is complete.
If you want 150+ of these planes per month go for it, but you might not need that many.
Currently playing my first PBEM, no house rules Scenario 1 as IJ.
AAR link (no SolInvictus): https://www.matrixgames.com/forums/tm.asp?m=4684655
alimentary
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by alimentary »

Something seems wrong with those estimated availability dates.

Research has a chance to move the availability date closer. It never moves it out.

One factory should get approximately 0.30 days of move-closer per day of elapsed time once it is fully repaired. 0.60 days of move-closer with the engine bonus.

If nominal availability is 10.5 months away, that's 1.6 days closer every day -- 0.6 from moving availability back and 1.0 from moving time-now forward.

So we divide 10.5 months by 1.6 days per day and get... 6.56 months. 6/13/43 plus 6.56 months is about 1/1/44.

Edit: Scooped by jdsrae
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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

jdsrae thanks for the correction

i'll revise my excel spreadsheet and research more models
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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

Something like this?

Research the A6M2-N Rufe to get the A6M5-C for example.



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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

Using that method Peggy T looks like this?

Seems to me you better have at least 2 factories on it

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jdsrae
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by jdsrae »

Nope those "Ready" dates are still wrong.

A formula for estimated “Ready” date based on these columns would be:
Ready date = “RD Done” + (Months / (1+(Research/Month)))

Rep/day: this column is actually showing estimated Research/month, eg: 0.3 per factory without engine bonus. It would be best to have a “no engine bonus” column and a separate “with engine bonus” area as you won’t get the engine bonus for all aircraft all the time.

Points: not sure what this column is for. You could delete it as it isn’t needed. 100 research points are needed to advance research by one month. One size 30 factory gives 1 point per day.
Days: the numbers shown here are still wrong, giving you incorrect "Ready" dates. The give away is 1 research factory giving you a “ready” date after the aircraft will arrive without research. You could delete this column.
Currently playing my first PBEM, no house rules Scenario 1 as IJ.
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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

ORIGINAL: jdsrae


A formula for estimated “Ready” date based on these columns would be:
Ready date = “RD Done” + (Months / (1+(Research/Month)))


perfect thanks
alimentary
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by alimentary »

The table shows 0.6 / day with one factory (with engine bonus)

The key problem is that this ignores the 1.0 / day that you get for just sitting on your butt, getting one day closer to the availability date.

The Rep/Day column needs incremented by 1.0 to account for this.

The Points column which jdsrae could not interpret appears to be the number of days between RD done and nominal no-research availability.

With the corrected Rep/Day column, dividing "Points" by "Rep/Day" would yield the number of days after RD Done when the airframe is expected to become available. Which matches the formula which jdsrae has already provided, albeit scaled to months rather than to days.



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RADM.Yamaguchi
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RE: Most streamlined IJ PLANE research/building approach Scen1

Post by RADM.Yamaguchi »

alimentary you're pretty good at figuring things out.

That's the piece that was missing!

i have a feeling there are a lot of others here who have a much better spreadsheet
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