Oh man, this system seems so freaking cool. I absolutely love the idea of using tearing of the character sheets and vessel sheets as a mechanic, and taping things back together with limited resources. Setting things in a submarine that is falling apart in a desperate hail Mary of self sacrifice gives the game a VERY solid combination of mechanical and thematic consistency that make understanding the rules feel super easy.
For the modules I think modifying the Miscellaneous table to be 6 entries that you could roll on as opposed to a chain could help GMs get some direction if they aren’t wanting to start one of the chains yet, and obviously a template to write your own scenario would be awesome for replay-ability. On the character sheets some reminders like the total number of bonus dice, threshold and difficulty reminders, and such would be nice. Maybe make the character sheets double sided so the wrecked info is on the back and the regular info is on the front so players can tear off the part and flip them to see the current state of their player and the vessel. Also the resources sheet was a little confusing for me starting off. Honestly I think just moving the Reality tag from the bottom of the mechanism to the top so it is on the side of the device that the numbers represent would go a long way to fixing the confusion I had.
In terms of the layout of the rules themselves, I love the way each page is a little darker background than the others and flow of the rules, but I think maybe one or two charts, some dividers and italicized text or other things to break up the text could help readability a little bit, but that feels very minor because the rules felt fairly easy to read.
Over all this system seems super fun and I would love a chance to test it out!