Hi J
I have not tested out the WO for accuracy but my inclination from a logical point would that it could not be 100%.
Having said that all you need is a rough idea so that you can change course to take up a better position.
You can also use the UZO to get a range.
These 2 written tutorials I have done will give you a good idea of how to go about taking on a convoy in different situations.
The interesting thing is that the video in Post #60 where Stoianm fires 3 torpedoes in to 3 different columns for all the torpedoes to hit their targets at the same time.
Post #59 Convoy Hunting For Ships In The Same Row By Stoianm
Post #60 Convoy Hunting For Ships In The Same Column By Stoianm
Your difficulty level may not be the same as Stoianm's but the same principles apply.Peter