Quote:
Originally Posted by Magnum
This. I also think that is very normal that under a certain depth with minimal speed the sub will start to slowly sink, mostly because the bigger water pressure that will overcome the air pressure from the tanks. To have control on depth again, the only way is to increase the speed.
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Back in the early days of SH3, when the buoyancy issue arose for the first time, there was a debate on whether to implement positive or negative buoyancy. IIRC, the general conclusion was that submarines (not just uboats) were built to have a slight positive buoyancy, precisely for the case of engine/battery failures. Eventually, one supermod took the positive buoyancy path, while the other went with the negative one. Though I'm no expert, common sense tells me positive buoyancy should have been norm back then, with less advanced batteries and electric motors, prone to failure.