From: Phoenix, AZ
I successfully held the river line at Moulmein until about July/August (iirc) in my current PBEM. Using the RN, I was able to keep the sea lanes closed to Moulmein for most of that. The line finally fell when I lose sea contention near Rangoon, stopping my supply runs and starting the Japanese flow into the moulmein port. This coincided with a few days of losing air battles over Rangoon and Moulmein against IJ(N)AF.
The strategy simply started as an effort to keep the Burma open for a while, then escalated into a fully viable defense. Had I put more effort into building up the defenses earlier, I might have held out through '42 assuming the RN would have held out.
I have to ask though, did your opponent commit Kido Butai to drive off the RN vessels guarding the area around Rangoon/Moulmein? While the IJN land based air can be simply devastating, sometime you just need to use carriers for power projection.
No, the KB was dedicated to the prolonged, and ultimately failed, invasion of New Caledonia for most of the year.
There was plenty of CV combat as the RN flattops exchanged with a variant of the mini-KB on 3 seperate occasions. Surface actions were frequently and I lost 2 RN BB's, one in a duel with the Yamato of the coast of Chittagong (the Yamato also paid a heavy price).
To your point, had the KB taken to the Indian Ocean my Burma defense would not have been so effective. However, knowing the commitment of the KB to SoPac I was able to make a stand. To my point, had defending at Moulmein been the plan from the onset I think it's remotely possible to hold on there even with the KB poking in.
Grog Virgin fanboy