My Dad actually made this fridge. Whats cool about it (no pun intended!) is that is has a section for ice. This provides an easy to way grab some ice to make a drink, and it also takes a little pressure off the refrigeration unit as theres quite a bit that you can put in so it cools the box. There is a small drain at the bottom that empties into the shower sump.
The fridge unit itself is just on the other side, to the stern in the engine area, just in front of the port fuel tank on that shelf.