How to model peacetime ASW procedures
 

How would you model peacetime ASW procedures in DW?

Example: A task force detects that it is tailed by a non-allied sub, which does aggressive maneuvers but uses no weapons so far.

I'd guess the the task force's ASW platforms would ping that guy but what would happen if the 'enemy' sub still reduces the distance and follows the task force? (without using any weapons)

it would take scripting i practice using DSRV's not only that i also put thier objectives as track not attack which sometimes helps.

Escort ships will move to block and drive very close to the approaching sub, pinging away until he surfaces.