There is a shipbuilding guide somewhere but I can't find it but read 13.5 in the new manual
The shipbuilding figures are very simplistic with naval and merchant working in exactly the same way.
Naval shipyard figure show how many build points (BP) you have at the beginning of the turn. These points can go towards the construction of any naval ship.
The figure in brackets shows the accumulated unused build points (UBP). These UBP can be used as temporarily boost to your shipbuilding output. Unlike BPs, which are always available, UBP are only available if your shipbuilding schedule does not exceed shipbuilding capacity. This is the difference between BP and required build points (RBP)(see below). Adding BP and UBP together gives you your total build points (TBP) for the turn.
The naval shipyard estimate is the required number of build points (RBP) you need to build the scheduled ships as shown in the ship list to the left.
Using the first turn screen, there are 1404 BP, 0 UBP and 1383 RBP. I'm happy as RBP is <= TBP (1404+0). From this I can also calculate the tomorrows UBP (1404-1383 = +21) hence total tomorrows total build point 1404+21.
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Ideally you should aim to keep the RBP equal to the BP. This in not often obtainable and in truth not strictly necessary as using less results in UBP, which are accumulative. Using more uses up those UBPs.
The problems start when you exceed TBP not because the game can't cope or keep track but because the game does not tell you what it's doing or how they were used.
In no particular order here are a list of problems and solutions.
• Build points (BP) do not differentiate between damaged, turned off or active status. Use the J key to see this.
• Looking at your figures the unused build points (UBP) are a whopping 42155, a crazy number and could only have be attained if you had turn off all naval shipbuilding up to this turn?? I'm assuming no data corruption.
• Both BP and UBP are updated during the logistics phase of each turn. As that occurs last in the turn nothing you do to your shipyards or any damage occurred during the turn will have any visible effect until the next turn.
• The naval shipyard estimate (RBP) is the actual number of shipyard build points you require to build the scheduled ships shown on the left. In your example you will need 1697. This figure exceeds your BP but you have that whopping UBP figure.
• Any of the four build states a ship can be in directly affects the RBP number. When you halting or stop ships no BP are used during that time. Normal uses 1 BP while accelerate can use 2 or 3 BPs per turn.
• Just to confuse you even more, the manual uses the term delay. This is the basically the number of days left before completion with 1 BP reducing this delay. E.g. you get the ship faster.
• I repeat what I said earlier, if you exceed your TBP the figures you see will make very little sense but the game is still controlling things.
; Julia Child