Hunger

 is considered a Ship Conditions Quality in Sunless Sea.

Quality description
"All of us must eat."

Obtaining
 is represented by a red bar on a meter located at the top left of the screen, and increases by half your current crew (.5 rounds to the nearest even integer) every 10 seconds whenever the game is not paused. Note that staying docked with the Gazetteer closed counts as "not paused".

When the  meter reaches or exceeds 50, the crew will be automatically fed by consuming one unit of supplies. This is recorded in the Log book as "Fed the crew" and resets  to 0. This results in the following supplies consumption based on crew: * No ship has sufficient quarters for this crew size

If  exceeds 50 without being able to automatically feed the crew, the Mouths to Feed event will be triggered.

Quality status
 has different statuses according to your actions, defined by the comment in front of the quality.

Journal description

 * [ 1 ] Replete
 * [ 25 ] Fed
 * [ 50 ] Peckish
 * [ 75 ] Ravenous
 * [ 100 ] Desperate

Triggered Events
Many events affect hunger. The table was ridiculously big, so instead, here are the triggered events, which is all that's really important to know.

Click Expand on the right for more.