yes, almost every merchant is armed so you have to rely exclusively on torpedoes. You can still do night surface attack though. I only use my deck gun on Sampans.
Pretty much every harbour is also covered by coastal batteries to discourage harbour raids.
Can't really comment on the DCs. I did get sunk once in dec.41 off of PI by a very accurate DC attack even though I was at 325-350 feet. Overall underwater, I dont notice a big difference between the effectiveness of RFB vs TMO escorts, unless you run into a "Bungo Pete".
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Last edited by Bilge_Rat; 01-22-13 at 01:44 PM.
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