persistant escort

[deepboat]

I came across a convoy in the Cf grid. Not too big, maybe 15 cargo and only 3 escorts. I screwed up the initial shoot and only damaged a couple of them and missed with other shots before the escorts got wise. When I lost them I went back up to periscope depth saw the coast was clear, surfaced and started to close on them again. All of a sudden one of the escorts turns back and starts homing in on me. No problem I thought so I go deep, silent run and I'll lose him. Not a chance! I tried everything to lose him, sort high speed runs after he passed me then silent. Diving deeper then switch off motors and sink silently, changing depths, nothing! He's still there pinging me, circling dropping presents. After 24 hrs and O2 down to 10% I elect to surface at night and try to sneak away but no luck. It's Jan 1940, my 3rd patrol with GWX 2.1. This is tough!