Last night I infriltrated the Port on Malta I think it is. A Flower tried to depth charge me but the water was so shallow the depth charges went off and blew off the racks so he couldn't attack me anymore
Then a Hunt I started chasing me around the harbor and I guess it learned from the Flower because instead of depth charging me, it just hovered above me. I would stop, it would stop right next to me, I would move, he would too. He shadowed me like this around the entire port as I shot everything else in the port including the other DD's and some Flowers. He hit me a time or two but only damaged the flak and deck gun.
As for blowing the ships in half, it happens all the time if you hit the feul tanks and during this attack I managed to put a fish right under a Flower, blowing it in half and sending both ends flying into the air.