Burst Size?

[garrisonchisholm]

We have our very handy penetration values for all calibres, but has anyone documented burst charge values?  As I recall, there was a rather sizable jump in weight of charge in the 12 or 13 inch range, and if penetration was only marginally better but burst size 40% higher I might be more tempted to adopted the new caliber.

[galagagalaxian]

Well Gundata.dat contains these values:

c sw ROF mr

2 15 25 4

3 15 25 8

4 32 20 10

5 63 19 11

6 108 18 12

7 172 16 13

8 276 15 14

9 365 14 15

10 500 12 16

11 666 11 18

12 864 10 20

13 1200 09 21

14 1372 09 22

15 1688 08 24

16 2048 08 26

17 3000 08 30

18 3500 08 32
SW seems to be "Shell weight" which seems right, given the 11-inch shells used by German battleships and battlecruisers weighed 666 pounds.

[Roumba]

Hmm, we can see that 13" guns have ~50% more shell weight than 12" ones. However, just how shell weight translates into post-penetration damage and/or burst charge is less clear; does that extra weight yield 50% more "damage"? Is the type of shell significant?

Personally, I look at the most modern ships my potential enemies have (or are currently building if the intelligence exists) and build to counter, trusting that improvements in AP technology will further enhance penetration enough to deal with any far future threats.

[JagdFlanker]

mr?

EDIT: Median Range

[Roumba]

Maximum range, in thousands of yards, is my understanding.

[garrisonchisholm]

Nov 20, 2016 12:47:03 GMT -6 galagagalaxian said:

Well Gundata.dat contains these values:

c sw ROF mr

10 500 12 16

11 666 11 18

12 864 10 20

13 1200 09 21


SW seems to be "Shell weight" which seems right, given the 11-inch shells used by German battleships and battlecruisers weighed 666 pounds.

Thank you!  There's that jump I was thinking of.   13" really is stepping up to a big calibre.  It has more than half the weight of a 16, whereas a 12 looks junior in comparison.

[JagdFlanker]

Nov 20, 2016 21:13:04 GMT -6 Roumba said:

Maximum range, in thousands of yards, is my understanding.

for quality 0 guns yes, but for -1 the range will be less while +1 the range will be more

[Deleted]

has anyone tested this in RTW?

i tested in SAI before and made SW 10 times larger. But there weren't big difference in required hits to sink a ship, around 30 or thereabouts.

reckon the data/algorithm is in the code for SAI at least

[bcoopactual]

Nov 21, 2016 7:14:29 GMT -6 JagdFlanker said:

Nov 20, 2016 21:13:04 GMT -6 Roumba said:

Maximum range, in thousands of yards, is my understanding.

for quality 0 guns yes, but for -1 the range will be less while +1 the range will be more

I think you're right.  If you take into account the boost to max range you get for fire control techs researched, it tracks very well for quality 0 guns. [Edit - I should say it matches well in the mid-point of the game.  Early on like 1904 the max ranges are much shorter.  Fire control techs must start out as a negative modifier to max range and then sometime around 1910-1912 they start to be a positive modifier to max range.]

[ccip]

Nov 21, 2016 8:16:31 GMT -6 skwabie said:

has anyone tested this in RTW?

i tested in SAI before and made SW 10 times larger. But there weren't big difference in required hits to sink a ship, around 30 or thereabouts.

reckon the data/algorithm is in the code for SAI at least

Hmm, I'll try and see!

To be honest, I always thought that shell weight wasn't factored into penetration calculations - I'm pretty sure the game engine just uses modified penetration values (with bonuses and penalties for tech etc.) for the calculations, and shell weight is just for tonnage calculations.