Medical Analysis Submersible

The submersible is a cylindrical observation chamber fitted with reinforced portholes and retractable manipulator arms, designed to descend into dense liquid environments for close-up inspection tasks. Its thruster array allows precision navigation through the coils of Crozier's energy extraction apparatus, where visibility is minimal. The Doctor and Peri use it to investigate the device's submerged components, halting when Frax and his guards storm the cave.