Special Attacks/Yamato Touch

Yamato gains two different special attacks on Kai Ni/Juu.

They're distinguished by how many ships participate, there's a 2-ship touch and a 3-ship touch:

Devs also have stated that the touch helpers will be updated with relevant ship implementation. So far, only Maryland + Colorado and Kongou + Haruna have been added for the 3-ship touch. Jean Bart, Massachusetts, and Rodney have not yet been added as any touch helpers.

Yamato-class 2-Ship Special Attack

"Touch Helpers"
Yamato Flagship:	Musashi Flagship:
	Kai Ni/Juu

• A Yamato-class Kai Ni/Juu must be flagship.
  • Secretary for combined fleets.
  • She must not be more than lightly damaged (小破).
• Another "Touch Helper" must be in the 2nd position.
  • She must not be more than lightly damaged (小破).
  • When using Musashi Kai Ni as the helper in the 2nd position with Nagato Kai Ni or Mutsu Kai Ni in the 3rd one being lightly damaged (小破) or better, there is a random chance to trigger the "3-Ship Special Attack" instead.

• There must be 6 or more surface ships in the fleet.
  • There must be no submarine in 6-ship fleets. In 7-ship fleets, only 1 submarine is allowed.
  • There must be no surface ship in the fleet sunk or evacuated via FCF
    during a sortie, making the remaining total < 6. Ships in the escort fleet are not counted.

• In single fleet, Echelon needs to be selected.
• In a combined fleet, Cruising Formation 4 needs to be selected.
• The touch can activate even if Yamato Kai Ni Juu is equipped with ASW equipment when facing a fleet mixed with submarines.

If triggered:

• The flagship will do a 1st & 2nd attack,
• The Helper will do a 3rd attack.
• Each attack targets a ship at random.

Equipment	Yamato Kai Ni Juu 2nd		Yamato-class Kai Ni 2nd		Other Helpers
	Attacks 1 & 2	Attack 3	Attacks 1 & 2	Attack 3	Attacks 1 & 2	Attack 3
No Bonus Equipment	1.54	1.94	1.54	1.86	1.40	1.55
Surface Radar Only	1.77	2.23	1.77	2.14	1.61	1.78
Sp Very large radar Only	1.96	2.45	1.95	2.35	1.77	1.96
AP Shells Only	2.08	2.62	2.08	2.51	1.89	2.09
AP + Radar	2.39	3.01	2.39	2.89	2.17	2.41
AP + Sp Very large radar	2.63	3.31	2.63	3.18	2.39	2.65

The equipment bonuses do not stack further than 1 radar and/or 1 AP shell per ship.

• Only ships equipped with those equipment will get a bonus for their attack(s).

The attack will consume extra ammo from participating ships when triggered. The total ammo consumption will be x1.6 of the original ammo consumption of those ships when the attack is triggered.

Currently measured above 70%, it seems similar to Big 7 touches:

• Trigger rate is affected by:
  • The Level and luck stat of the participating ships.
  • Surface Radars (5+ LoS?) on attacking ships (+8~10%).
• Can be triggered even if artillery spotting fails to activate.
• Can only be activated once per sortie.
• Has a chance to trigger every time the flagship takes a turn at shelling.
  • In single fleet, if it fails to trigger in day battle, there is a chance to trigger it in the follow-up night battle.

Yamato 3-Ship Special Attack

• Yamato Kai Ni/Juu must be the flagship.
  • Secretary for combined fleets.
  • She must not be more than lightly damaged (小破).
• A pair of ships from a same "Helper Pair" must be in the 2nd and 3rd positions.
  • They must not be more than lightly damaged (小破).
  • When using Musashi Kai Ni as the helper in the 2nd position with Nagato Kai Ni or Mutsu Kai Ni in the 3rd one:
    • If the 3rd ship is lightly damaged (小破) or better, there is a random chance to trigger the "2-Ship Special Attack" instead.
    • If the 3rd ship is moderately damaged (中破) or worse, the "2-Ship Special Attack" will trigger instead.

• There must be 6 or more surface ships in the fleet.
  • There must be no submarine in 6-ship fleets. In 7-ship fleets, only 1 submarine is allowed.
  • There must be no surface ship in the fleet sunk or evacuated via FCF
    during a sortie, making the remaining total < 6. Ships in the escort fleet are not counted.

• In single fleet, Echelon needs to be selected.
• In a combined fleet, Cruising Formation 4 needs to be selected.
• The touch can activate even if Yamato Kai Ni Juu is equipped with ASW equipment when facing a fleet mixed with submarines.

"Helper Pairs"
One of the following pairs:
Musashi Kai Ni 2nd ship:		In any order:
				Kai Ni B/C

If triggered:

• Yamato will do a 1st attack,
• The 2nd ship will do a 2nd attack,
• The 3rd ship will do a 3rd attack.
• Each attack targets a ship at random.

Equipment	Musashi Kai Ni (& Helper )		Nagato-class Pair	Ise-class Pair		Other "Helper Pairs"	Any "Helper Pairs"
	Attacks 1	Attacks 2	Attack 1 & 2	Attacks 1	Attacks 2	Attack 1 & 2	Attacks 3
No Bonus Equipment	1.65	1.80	1.65	1.65	1.58	1.50	1.65
Surface Radar Only	1.90	2.07	1.90	1.90	1.80	1.73	1.90
Sp Very large radar Only	2.09	2.28	2.09	2.09	1.99	1.90
AP Shells Only	2.23	2.43	2.23	2.23	2.13	2.03	2.23
AP + Radar	2.56	2.79	2.56	2.56	2.45	2.33	2.56
AP + Sp Very large radar	2.82	3.07	2.82	2.82	2.69	2.56

The equipment bonuses do not stack further than 1 radar and/or 1 AP shell per ship.

• Only ships equipped with those equipment will get a bonus for their attack(s).

The attack will consume extra ammo from participating ships when triggered. The total ammo consumption will be x1.8 of the original ammo consumption of those ships when the attack is triggered.

Currently measured above 70%, it seems similar to Big 7 touches:

• Trigger rate is affected by:
  • The Level and luck stat of the participating ships.
  • Surface Radars (5+ LoS?) on attacking ships (+8~10%).
• Can be triggered even if artillery spotting fails to activate.
• Can only be activated once per sortie.
• Has a chance to trigger every time Yamato takes a turn at shelling.
  • In single fleet, if it fails to trigger in day battle, there is a chance to trigger it in the follow-up night battle.

Main source: [1]