Here is a thought concerning convoys. Needs verification from the moding crew or people who have "played around" with the mission editor.
A. Convoy speed is based on the speed of their slowest members.
B. If you take out the "slow movers" the convoy speed increases (based on the speed of remaining set of "slow movers").
C. If you are planning on multiple attacks on the convoy, you'd prefer a "slow" rather a "fast" moving convoy, as it will be more easy to reposition your sub for a subsequent attack.
D. Based on the above, the highest priority targets would be ships with high maximum speeds so as to ensure that the convoy speed won't increase.
E. From the above ''''''analysis'''''' exclude escorts.
Personally I shoot whtever seems a probable hit and get the hell outa there!
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