It's cheesy, but if you have your Obs scope up, the arrival of a plane will take you out of high TC. When that happens you can lower the schnorks and dive. Actually, I don't use the snorkel much because, as you see, it doesn't hide you very well. I only use it to approach convoys faster at PD (it's slightly harder for escorts to see than your surfaced boat). Otherwise, since you can always crash dive in time given a 'Radar Signal Detected' warning, you might as well run on the surface to recharge - that way you also go faster. It's too bad that the radar signature of the schnorkel isn't modelled as smaller than that of your boat (correct me if it actually is).
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