[sublynx]

Some suggestions:

re-install just in case you have detection range settings corrupted

after that:

try

1. waiting for bad weather
2. keeping a distance of 2000 meters to the escorts
3. minimizing up periscope time
4. running at 50 RPM
5. occasionally switching off engines altogether
6. keeping your bow turned towards the closest escort

Don't get frustrated by a failed approach, take notes about the situation instead and try something new on the next attempt

The approach will get more and more difficult by the years, so:

7. Start learning how to shoot from a minimum distance of 4500 - 5000 meters