Geesh, I'm certainly lost my touch. I've tweaked things to be so difficult, no mistakes, got killed my first patrol.
Next career ran into the large invasion force that invades Ambrom, but coming before it almost mixed together was a DD killer group. I only sunk one merchant and spent 3 hours evading.
Now off to the Timor Straits to catch the large CV TF making it's run into the Indian Ocean, 5 carriers, 5 BB's and about 20 other warships, one of my favorite groups.