Is this cheating? (CONVOY TRICK IN SHALLOW WATERS)

[Dantenoc]

It's not cheating per se, but it is kind of gamey since you're exploiting the weak AI. It should be obvious that you're hiding in a place that is unaccesible for the escorts, but maybe that's OK and still fair game. However, what happens later on is the problem. In real life the ships wouldn't just leave after a while, but rather would simply wait until you ran out of air and then shell you to pieces.