Submarines and why I can't go underwater

[QuantumByte404]

I can't go underwater with any sub of the workshop can someone say the reason please?

[ElfBossHogg]

I think it may be tied to the fact that the pumps become underpowered as a result of a development decision a couple of releases ago. Therefore the pumps ability to move water in to balast tanks in order to create the weight necessary for sinking was lessened. As a result it will take a lot longer to fill the balasts in order to allow you to sink.

The subs probably still work but it's going to take a heck of a lot more time for them to do so.

[Jackgunz]

Fluid on/off valves and fluid filters create a large resistance to flow according to another disscusion, i was told to avoid them when possible until they get fixed. If the ballasts systems have filters or an on/off valve, that could be the problem.