Bring Only the Bare Necessities.
You have, without a doubt, realised by now how cramped the interior of a submarine is at this point in time. You might have to cope with a group of as many as one hundred people inhabiting the same space as you do. That’s so far out it’s not even funny!
In order to ensure that you have sufficient room for all of your belongings, it is essential that you do not pack more of your belongings than you can adequately fit in the room that you will be sharing with a significant number of other people. This is because the room may be smaller than you think it is.