Hydrophones, pressure hulls, calibration and the latency budget behind every reading.
The instrument layer. Sensor Engineering covers hardware design, drift compensation, acoustic relays and the engineering decisions that keep a 6,000 m telemetry chain honest.
Why the Bathys engine treats hydrostatic loading as a topology problem, and how cascaded pressure-hull thresholds turn a slow drift into an early warning.
Every Bathys mooring reports within 12 ms. Most of that budget is physics; the rest is fighting hydrophone drift. A look inside the acoustic latency chain.