Core

The core is the one block every ship has and the one it cannot lose. Everything else hangs off it, directly or through other blocks, and a piece that loses its connection to the core breaks away as scrap.

Destroying a core destroys the ship. Its owner respawns, and whoever landed the final blow is paid for the ship in proportion to how much of it had already been shot away; the hull still attached to the core is left as a wreck for anyone to eat.

The core is lit while a ship has power, which is how you tell a live ship from one that has stood down.