Morale is back up to almost 9000!
Managed to drag the escorts away from the convoy one at a time, and 4 eels later the convoy is defenseless. As I crawled back into the convoy (Each line was spaced several hundred meters apart, plenty of room for my Type IX), I suddenly sighted an Auxiliary Cruiser at the very rear of the convoy... Not quite a prestigious warship, but 13000 tons is 13000 tons
Sunk a pair of large freighters while I waited for the Aux Cruiser to catch up, and then placed 2 eels under what must've been the magazine as it went down almost instantly.
Now I'm currently on the surface pulling in my external reloads, and darkness is only a few hours away.