Incubation Vault

From Metroid - Wiki on Neoseeker

Incubation Tank Size: small this area has no power-ups, and has very few weapons.us the missile spawn point is on a bridge at the top while the battlehammer is on the ledge with one UA next to it, while a shock coil is in the walkway with 2 UA at its sides. An affinity weapon is in a cubby hole behind the health.