Proximity Fuze vs Torpedo Protection - Testing

Proximity Fuze is a captain skill that provides -10% anti-torpedo protection. What exactly does it do?

At the beginning of the video, I show where the torpedo protection is on the Yamato (55%), the Yodo (19%), and the Harugumo (0%, not present). What PF does is reduce that protection by a straight 10%. For example, the Yamato's protection goes from 55% to 45%, the Yodo from 19% to 9%, and the Harugumo stays at 0%.

The first series of strikes are WITHOUT Proximity Fuze (captain has regular fighters). The second series of strikes are WITH Proximity Fuze (captain has interceptors).

Conclusions: Proximity Fuze only helps with strikes on torpedo protection. The unprotected maximum damage for two Hakuryu torpedoes is 16936, which is what we saw on multiple strikes on unprotected areas across multiple ships. Saturation reduces torpedo damage by about 25%. Strikes on unprotected areas are VERY likely to cause floods, while strikes on torpedo protection are more likely to disable modules (primarily engine in the case of Yamato).

Strike results:

00:55 - Two non-PF torps on unprotected Yamato bow for 16936 damage. Remember this number, as it will show up elsewhere - it's the normal damage on unprotected targets. Also note that this strike damage saturates the bow and causes a flood.

01:16 - Two non-PF torps to the protected Yamato amidships for 8121 damage. Note the engine knockout.

01:40 - I *think* this is one non-PF to saturated Yamato bow and one non-PF torp to torpedo protection for 8293 damage. Note this causes another flood (amidships?).

01:58 - Two non-PF torps to Yamato amidships for 8121 damage.

02:17 Two non-PF torps to Harugumo for 15820. I'm relatively certain this was due to bow saturation (see other Harugumo hits below)

02:41 One miss and one non-PF torp to Yamato amidships for 4042.

03:03 Two non-PF torps to Yamato amidships for 8168.

03:25 One miss and one non-PF torp to Yamato amidships for 4042.

03:44 Two non-PF torps to Yamato bow for 17101 - I believe this is a cheek strike that hit the citadel for a bit of extra damage.

04:04 Two non-PF torps to Harugumo amidships for 16936 - standard unprotected damage.

04:26 One non-PF torp on Yodo bow and one non-PF torp on Yodo amidships for 13506. It's actually hard to avoid the Yodo torpedo protection as it is extensive, but note that the damage is only about 3.4k less than maximum, which makes sense as 16936*0.81 = 13718, so we likely saturated the bow.

04:46 One miss and one non-PF torp Yodo amidships for 7072.

05:09 One miss and one non-PF torp Yodo amidships for 7072.

*****
05:27 One PF torp to Yamato amidships and one PF torp to Yamato bow for 13353.

05:48 Two PF torps to Yamato amidships for 9607. Based on previous results, this is approximately 743 additional damage per torpedo based on 8121 damage from non-PF torpedoes in the same spot.

06:11 Two PF torpedoes to Yamato saturated bow for 12719.

06:29 Two PF torpedoes to Yamato amidships for 9854 - approximately 866 additional damage per torpedo (vs. 8121).

06:51 Two PF torpedoes to Harugumo amidships for 16936 damage. No benefit from PF.

07:12 Two PF torpedoes to Yamato bow for 16936 damage. No benefit from PF.

07:34 Two PF torpedoes to Yamato amidships for 9807, approximately 843 additional damage per torpedo from PF.

08:01 One miss and one PF torpedo to Yamato amidships for 4885 - approximately 842 additional damage from PF (vs 4043).

08:22 Two PF torpedoes to Yamato amidships for 9854 damage.

08:40 Two PF torpedoes to Harugumo amidships for 16936 damage - No benefit from PF.

08:04 Two PF torpedoes to Yodo amidships for 15830. 16936*0.91 = 14920, so maybe one missed the torp protection?

09:28 One miss and one PF torpedo Yodo amidships for 7915 damage. 8468*0.91 = 7706, so more damage than expected by about 200.

08:52 One PF torpedo to Yodo bow and one PF torpedo to Yodo amidships for 14535.

10:13 Two PF torpedoes to Yodo saturated bow for 12153.