PSA: Fire Chance Math Example

[Hurlbut]

Example:

Yamato bow is hit by a HE shell. It is not on fire.

HE shell fire chance is 7%. There's DE (+3%) skill, so final value is 7%+3% = 10%.

Yamato fire protection is 0.5 (it actually can be that good on T10, but it is much lower on low tiers). There's Fire Prevention skill (-7%) , so final fire protection is 0.5 x 0.93 = 0,465.

10% x 0,465 is 4,65% of fire chance on this hit.

Ugh...I hope I managed to clarify this.

source:Sub-Octavian

Here you go; how Fire Chance works (and how Fire Prevention bonus works).

 

[ryuukei8569]

It just goes to show just how incredibly useless fire prevention was before the patch. at least now its semi useful, even if it does cost way too much.

[Hurlbut]

It just goes to show just how incredibly useless fire prevention was before the patch. at least now its semi useful, even if it does cost way too much.

 

Well, it's a percentage based bonus so for ships with fire protection chance worse than Yamato, it gives a bigger bonus.

[BrushWolf]

It just goes to show just how incredibly useless fire prevention was before the patch. at least now its semi useful, even if it does cost way too much.

 

It wasn't actually useless but the effect was only noticeable over thousands of matches.

[Hurlbut]

 

Well, it's a percentage based bonus so for ships with fire protection chance worse than Yamato, it gives a bigger bonus.

 

Wait... I think I made an error....I think the way Sub_Octavian said the ship's fire protection chance is a negative number applied against the HE's fire chance. He said it tend to be lower on low tiers, which mean I drew the wrong conclusion. In that it would give a bigger bonus on ships like Yamato that has a high fire protection chance.

[yashma]

 

Wait... I think I made an error....I think the way Sub_Octavian said the ship's fire protection chance is a negative number applied against the HE's fire chance. He said it tend to be lower on low tiers, which mean I drew the wrong conclusion. In that it would give a bigger bonus on ships like Yamato that has a high fire protection chance.

It's all explained on the wiki

 

http://wiki.wargaming.net/en/Ship:Fire

 

That lists the fire reduction coefficient for each tier

[Lone_Starr]

So after all the math, if there's a 5% fire chance and you have FP then it's a 4.5% fire chance? Big whoop. Only barely, maybe , sorta, kinda worth it for only 3 fires instead of 4. But really not even close to worth it for 4 skill points.

[BlazerSparta]

So after all the math, if there's a 5% fire chance and you have FP then it's a 4.5% fire chance? Big whoop. Only barely, maybe , sorta, kinda worth it for only 3 fires instead of 4. But really not even close to worth it for 4 skill points.

 

It's not quite as simple as the math.

 

What FP does is combine the 2 superstructure ignition points into 1 - and the superstructure is the point most aimed at.

[Zampy]

It just goes to show just how incredibly useless fire prevention was before the patch. at least now its semi useful, even if it does cost way too much.

 

​The combination effect n the superstructure now, in most situations, is reducing fire damage taken by 33-50% with the removal of one of the most commonly lit areas on a ship.

[Sovereigndawg]

Example:

Yamato bow is hit by a HE shell. It is not on fire.

HE shell fire chance is 7%. There's DE (+3%) skill, so final value is 7%+3% = 10%.

Yamato fire protection is 0.5 (it actually can be that good on T10, but it is much lower on low tiers). There's Fire Prevention skill (-7%) , so final fire protection is 0.5 x 0.93 = 0,465.

10% x 0,465 is 4,65% of fire chance on this hit.

Ugh...I hope I managed to clarify this.

source:Sub-Octavian

Here you go; how Fire Chance works (and how Fire Prevention bonus works).

 

Redo the math again because DE is only 2%. That will drop your chances even more. Sub Octavian forgot the nerf to DE.