Changes

*If several ships fulfill the requirements, then they all can perform preemptive attacks, each attacking a random submarine in the enemy fleet. The firing order is determined by the range order, similar to the First Shelling Phase. The order for ships of the same range is random.

*If several ships fulfill the requirements, then they all can perform preemptive attacks, each attacking a random submarine in the enemy fleet. The firing order is determined by the range order, similar to the First Shelling Phase. The order for ships of the same range is random.

*The damage follows the [[Damage Calculation|usual ASW formula]] and is affected by the usual modifiers (formation, engagement, health, ammo), as well as equipment [[improvements]].

*The damage follows the [[Damage Calculation|usual ASW formula]] and is affected by the usual modifiers (formation, engagement, health, ammo), as well as equipment [[improvements]].

}}The following tables show how much base ASW is needed (in form of required ship level) to enable OASW with a given equipment setup (T4: [[Type 4 Passive Sonar]], T3: [[Type 3 Active Sonar]], DC: [[Type 3 Depth Charge Projector]]) ASWR: [[Prototype 15cm 9-tube ASW Rocket Launcher]].

}}The following tables show how much base ASW is needed (in form of required ship level) to enable OASW with a given equipment setup (T4: [[Type 4 Passive Sonar]], T3: [[Type 3 Active Sonar]], DC: [[Type 3 Depth Charge Projector]] ASWR: [[Prototype 15cm 9-tube ASW Rocket Launcher]]).

===Enemy Ships with OASW===

===Enemy Ships with OASW===

Destroyer

Destroyer