[merc4ulfate]

Fish is correct. Not only that but Task Force and Convoys will have a spawn point, end point or way point. If it was scripted to despawn 2nm from the port then that is as far as it will get. I have had convoys disappear on me just as I was getting into range because of this.

If it is a waypoint then the Task Force may come with 10 or 20 nm of the port and then turn and continue down another track. I too have seen this one happen.

Unless you have them running into a narrow straight and your using a long range radar and sonar it is pretty easy to miss them if they are on the outskirts of your detection area.

You also can not track them long range unless your playing the German side. I use the air search a lot as a U-Boat because I can then track and plan an attack on TF and convoys that may be 300 miles away.