The video of the submarine launching is pretty cool. One is that the audio signals are the same as the US uses. No surprise I suppose as a lot of these things are governed by international agreements. Don't want ships crashing into each other because one country's horn blast means something different than another countries.
The uniforms they wear look like hospital scrubs. I am assuming they are all cotton for fires. And while all the equipment looks rather antiquated by our standards, the sub is much brighter and lighter than any sub I have seen. I am sure it is not IRL, but it looks open and spacious compared to US subs.