The 'trick' to the drawer stop
This showed up at the end of an unrelated thread, so I moved it....
As to the question, just reach under the center front of the drawer and gently push up on the little plastic keeper, with the drawer almost but not quite all the way open. That's also why it does not open up and fall out when the boat is rolling around in a seaway.
I might not be describing it well, but once you figure it out, it really is easy.