Hi CB,
I´ve never seen such convoy behavior, but have to say i´m using the improved convoys mod by jason885 from the beginning.
When i was spotted by a ship travelling in the convoy or manage to hit one, the convoy in general is doing a course change, but in a very ordered and disciplined way.
After some time they´re going back to their general course.
Maybe it´s a problem with the shorter spacing in default game, so the ai is going to "evasive" mode as one ship is coming to close to another one =>chain reaction follows.
In the new RND file by jason the spacing between ships is increased.
Give it a try, you´ll like it. :P
http://edseek.com/mirror/sh3/Improve...00508211731.7z