Horror-Filled Staircases
Because space submarines have a certain amount of resources, we have shared this information with you multiple times. We apologise for the inconvenience. Another illustration of this can be seen right here! The restricted space capacity of these boats results in cramped interiors due to the lack of available space. The hallways are also affected by this in some way.
It is only possible for one person at a time to move through the passages since they are so congested that they cannot accommodate more than one. To put it another way, it is not possible for two people to walk side by side down a corridor due to the physical constraints involved.