Survived.
Thanks again, Bubblehead.
Your assurance that I could be patient was crucial. Without it I would have fired all my torpedoes at these mosquitoes without effect, and battle-surfaced to my doom.
I tried the "Dykers" method, with mixed results. For some reason, even at flank speed, my (undamaged) boat would not exceed 4 knots --- the same velocity as at 2/3 speed. So I ran at 2/3 to conserve the battery when escorts were making their run, and stopped engines to coast and turn.
At one point an airplane dropped depth charges right in the middle of the circling escorts, but without effect to my sub.
"Dykers" did perhaps give me more space but the escorts were still close, still pinging.
Finally I stopped engines to wait for nightfall. At this point the escorts spread out, and also stopped engines, listening. Well after sunset I went to 50 rpms, crept away at 0.25 knots, and escaped.
When I finally surfaced and finished recharging batteries, it was 0300 ---- 21 hours after the
Chitose was sunk.
Don't wish to experience that again, but TMO is great!