I was probably too close then. Darn.
Ah well, next career.
I'll set up differently next time, maybe 150 miles due north of Midway on the 4th, then search westward. In this case I don't much care if I get any tonnage, I would just like to see a major battle going on.
In fact, I'd say it was unlikely I could sink anything, unless I'm finishing off a cripple.