Underwater Cargo Rejection

One complete 3-second underwater industrial cargo rejection sound effect. A metal cargo loader pushes forward and jams against an obstruction with one dull heavy impact, immediately followed by a short restrained electronic rejection signal inside the capsule, then a brief hydraulic mechanical reset and a natural low resonance decay. This must be one continuous event with continuous audible progression and no long silence. No second collision, no montage, no music, no voice, no ambient background, no bright sparkle and no cinematic exaggeration. Use a muffled enclosed metal-underwater perspective.