Sinking for no reason is a fact tho, my current experience => just left Pearl Harbor, standard speed setting, cruising on the surface, only a single merchant (friendly as it is bleu) nearby, and no planes. and then... taking ****load of damage and sub destroyed
.
might want to look deeper into it :-)
thats SH4 tho.
ps: running the vanilla game with latest updates, no mods or add-ons.
pss: maybe one of my crew is a japanese spy that sabotaged my boat !