An Unexploded Shell

 is a Sunless Skies Random Event.

Story description
''An engineer has made an alarming discovery. An undetonated shell from a recent battle has penetrated your hull and lodged in a cavity under the plating. ''

It's still there, buried in a nest of pipes.

Trigger conditions
In Combat ≤ 0, Critical Damage ≥ 1 Location: The High Wilderness Area: The Sky Frequency: Critical Damage (100%)