XXI attack periscope

[joe313]

Hi all
it was my second patrol on my XXI i was in position to periscope attack a convoy then one of the escort destroyers detected me i was trying to lock on that destroyer but i couldn't my uboat was bouncing because of a rough weather until finally i was able to lock on on the destroyer it already got 1100ms from me so i fired a homing torpedo it missed the stern of the destroyer then circled around and chased it by that time the destroyer got real close then i gave it a deep thought what should i do ahead flank i was afraid i will get hit by my own torpedo or stay still and get rammed by the destroyer they were both coming at me so i hit ahead flank after the destroyer started its attack run its was to late for me i got rammed by the destroyers add to that my torpedo hit the destroyer when it was ramming me then i got depth charged u bout lost and all my crew i am the only one made it to tell my story

i fond it impossible to lock on target with XXI attack periscope in rough weather because the uboat bounce from 14m to 20m depth
does any one got any idea what to do to keep it level to certain depth I used the A command but it didn't do me any good
I am using GWX 2.1 and SH3 Commander

sorry for the bad english