The game is a lot of fun, but is still a bit of an arcade shoot-em-up. I say that because your destroyer has an endless supply of DC. In addition to that, there should be a time gap between the explosions of the charges and the detection of a sub contact.
Currently, reported contacts come in roughly every 20 seconds, even following extensive DC attacks.
The other escorts never attempt an attack, and there is no way to order such.
Maybe someone already mentioned this, but the captain of the DD is wearing a uniform that is definitely not an American naval uniform. It is like the one Tom Hanks wore in the movie. US naval men never wore black shirts.
Otherwise, the game is a lot of intense fun. It will be even more intense when the subs can attack escorts.