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ORIGINAL: irrelevant
You're headed in the right direction, except you need to keep in mind that the merchant shipyard point (MSP) pool and the naval shipyard point pool are two separate things. Your MSWs are built using MSPs.
Sorry, one more thing. One day's worth of acceleration costs two times the ship's durability. So to accelerate Shoho by one day costs 90 (in addition to the 45 already spent for the normal progress). Every day during which you accelerate construction gets you two days nearer completion, but costs you three times the durability in shipyard points.
One more thing about acceleration, continuing with the Shoho example. Shoho will arrive in 48 days using normal construction, so she costs 48*45=2160 points. If you accelerate her from the start she will cost 3 times as many points every day she is being accelerated, but will arrive in half the time. So she'll arrive in 24 days, at a cost of 24*45*3=3240 points. The total cost is only one-and-one-half times as much as the normal cost. You pay three times as much per day on the front end, but then after she arrives, you spend nothing when you would have still been paying the normal cost.
Also, a ship is only available for acceleration under certain circumstances. "A ship that has a delay over 10 * ship durability and less than 30 * ship durability may be accelerated." So your MSWs would be available for acceleration (using MSPs of course) only when they were due to arrive between 10*2=20 days and 30*2=60 days from now. IOW, you can't accelerate just any ship, it has to be one that is 70% or more complete.
One more thing about acceleration, continuing with the Shoho example. Shoho will arrive in 48 days using normal construction, so she costs 48*45=2160 points. If you accelerate her from the start she will cost 3 times as many points every day she is being accelerated, but will arrive in half the time. So she'll arrive in 24 days, at a cost of 24*45*3=3240 points. The total cost is only one-and-one-half times as much as the normal cost. You pay three times as much per day on the front end, but then after she arrives, you spend nothing when you would have still been paying the normal cost.

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So I choose to speed up the CVL Shoho at 135 points. 45 normal points/day * 3 = 135 points

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That leaves me with 144 points left. So I choose to speed up the Unyo at 40 normal points/day*3=120 points. 144-120= 24 points. Not much else you can do with 24 points.

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ORIGINAL: irrelevant

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So I choose to speed up the CVL Shoho at 135 points. 45 normal points/day * 3 = 135 points

Not quite. You already paid 45 of the 135 points for Shoho (the part for "normal" construction) as part of the original 1260 points.

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That leaves me with 144 points left. So I choose to speed up the Unyo at 40 normal points/day*3=120 points. 144-120= 24 points. Not much else you can do with 24 points.

Except Unyo, a CVE, is a part of the merchant ship construction program. You cannot affect her here (but if you could, your calculation would have been faulty for the same reason as for Shoho; you already accounted for the points for "normal" construction).

So, to pick up your example where you went astray:

180+185 = 365 points
365 - 86 = 279 points left

Less 90 to accelerate Shoho, leaves you with 189 to play with. You could even reinstate Musashi...

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ORIGINAL: irrelevant

With no shipyard changes, Japan gets 1174 naval shipyard points per day. On 12/7/41 the following have reached the stage of construction that requires the expenditure of shipyard points in order for them to advance towards completion: 4CV, 2CVL, 2BB, 1DD, 12SS requiring a total expenditure of 1260 points per day. From the start there is a deficit that can be handled in various ways.

you can convert merchant shipyards. You have 1000 points worth of them at the start, and only 510 points worth of merchies burning. But that is before you convert AKs to AE, AR, AS, AV, and MLE. Those guys cost an additional 18 points a day each. Only you know how many of those you are going to make, so only you know whether you have leftover merchie capacity or not.


The other thing to keep in mind is that this is the situation at the start. It is not static but can and does change on a daily basis as some ships arrive and others reach the point where they start burning shipyard points. For example, the expenditure required for merchant ship construction on Jan 3, 1944 is 2612 points. That's pretty rich for your 1000 point per day budget. Fortunately for you, by then you are likely to have excess naval shipbuilding capacity that you can convert to merchant construction. The only question then is whether you have the HI to build all those ships (and of course, whether you still actually need any of them!). The only way to really be able to plan your shipbuilding is to build a day by day construction plan for the entire war including all possible ships, and then start tweaking it. I have done this, and would be happy to share it, but the files are huge. The one for warships is 23 megs, the one for merchies is 37 megs.

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One last question: How did you figure out that on turn one you are already spending 1260 points per day completing 4CV, 2CVL, 2BB, 1DD, 12SS???

...and the same with the merchant yards? How did you figure out you are already spending 510 points per day completing merchant ships? Which merchant ships are these? And how do I fix my merchants so they all arrive on time like i did in my Shinano example??? What ships should I halt so that all my merchants arrive on time???

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What are the number from the merchant yards assuming you do nothing in the way of expansion? How many if any points do you have to work with on accelerating ships?

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ORIGINAL: irrelevant

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Translation please? Did you mean the best arrival schedule?

No, I mean the arrival schedule that you see when you look at the ship arrivals through the info screen. The arrival schedule leaving all ships on "normal". There aren't enough naval shipyard points to make it happen this way. Either you make changes or the game will make them for you by means of not advancing (I believe) the most expensive ship(s) on days when there aren't enough points. So day 1, need 1260, have 1174. So, Yamato does not advance today. But you only spend 1080, so 94 go into the bank. Day 2, need 1260, have 1174+94=1268, hooray, all projects advance! Day 3, need 1271 (another Yugumo just started burning points), have 1174+8=1182, oops, Yamato slips another day, but 89 points go into the bank....

I never tested to find out for sure which ship(s) production would slip; I just resolved never to be in that position, that I would be the one to choose what did not get built, rather than allow the game to do it for me.

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I'm absolutely astonished that players of the Japanese haven't collectively roared at Matrix/2by3 to sort this out!

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ORIGINAL: Xargun

Before you get all excited about stopping ships that are months if not years away remember the basic rule for japanese ship building...

Page 184 of manual:

13.7: If a ship has delay equal (or greater) to it's durability * 10 then the ship does NOT consume construction points but recieves a FREE day of construction. Thus those ships that are a year or more out are probably not consuming ship construction points anyways, so if you halt them it won't matter much...

Xargun

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13.7: If a ship has delay equal (or greater) to it's durability * 10 then the ship does NOT consume construction points but recieves a FREE day of construction. Thus those ships that are a year or more out are probably not consuming ship construction points anyways, so if you halt them it won't matter much...

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ORIGINAL: irrelevant

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I'm absolutely astonished that players of the Japanese haven't collectively roared at Matrix/2by3 to sort this out!

I don't know about the others, but I haven't squawked because I'm a sicko beancounter by profession and I kind of enjoy the puzzle of it. But it never occurred to me that there was anything particularly wrong with it. It just needs some tweaking, same as aircraft production. You examine the possibilities, decide on your priorities, and make some choices. Your assumption is that the arrival schedule is exactly historical, but looking at the it, I see ships on it that I know were not completed during the war (CVL Ibuki, CVs Kasagi, Aso, Ikoma), but you can build them or even rush them to completion if you wish. I expect the Japanese themselves had to make some tough choices regarding their shipbuilding plans.

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My expectation was that I need do nothing to production as the Japanese player and the production would be historical, assuming I had the resources to 'fuel' it. Oh, well.

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That leaves a 11,229 point deficit to overcome and i believe stopping construction on 1 RO-boat will makeup this deficit by itself.

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Halting construction on a shortrange sub would seem to be a cost effective measure. Then again since you have a merchant shipyard surplus of some 400 points converting some to naval shipyard points sounds attractive.

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Out of curiosity irrelevant what tweaks have you tried in scenario 15 shipbuilding as the Japanese?

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ORIGINAL: irrelevant

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13.7: If a ship has delay equal (or greater) to it's durability * 10 then the ship does NOT consume construction points but recieves a FREE day of construction. Thus those ships that are a year or more out are probably not consuming ship construction points anyways, so if you halt them it won't matter much...

Here's what you are paying for on Day 1:

185 Yamato
185 Musashi
180 Shinano
115 Taiho
50 Junyo
50 Hiyo
50 Ryuho
45 Shoho
11 Makigumo
33 I-11
33 I-27
33 I-28
33 I-29
33 I-30
33 I-31
33 I-32
33 I-33
33 I-34
33 I-35
33 I-36
26 I-176

1260 Total

Of course, by 12/9/41, this list is obsolete as DD Kazegumo now starts burning points. [;)]

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ORIGINAL: irrelevant

The IJN warship construction planning tool I mentioned in this thread is available for download at Spooky's. Be warned, it's a bigass file (zipped for download though). He also said he'd put up the one for merchies as well; it's even bigassed-er.

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ORIGINAL: steveh11Matrix

So, in short, the simple quick-and-dirty solution as the Japanese in the Dec7th1941 scenario is to ditch Shinano and a couple of RO class subs, and all will be as well as could be expected for the Naval construction, and to consider expanding the Merchant construction capability - if resources permit - sometime in 1943?

Steve (- always looking for the simplest solutions necessary)

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ORIGINAL: kypros

When playing a game with the "Variable Reinforcements" option enabled to something other than "Fixed", can the player still make these changes?