Kingeater's Castle

 is a half-ruined stone citadel surrounded by vast, mostly-sunken statues. It was made available in the Diamond release. The port is called Pennington.

Port description
''An old voracity lives here, in the far reaches of the zee. The priests are long gone, but sacrifices are still made. Perhaps you have come here to make a sacrifice. Perhaps the sacrifice is you.''

Your Father's Bones: at Kingeater's Castle
For this event to become available, you must have Your Father's Bones: A Cold Trail ≥ 50 (go to Kingeater's Castle), no  Your Father's Bones (obviously) and  Memoirs: Your Past = 4 (A Soldier).

All around the altar, bones lie in brown drifts, like naked fossils. If the Admiral is to believed, your father's bones are here among them. But which? Where?

Trivia

 * The text "alone alone all all alone" which is the response for choosing to eat your crew is a quotation from the Rime of the Ancient Mariner
 * The two choices of "Go insane" and "Eat your crew" are part of the taglines for Sunless Sea