Alksky camera cases that can survive a deep sea plunge

One of my ‘goals’ for future Allsky build is to have a ‘no-nonsense’ waterproof case. In ‘non-astro’ field (underwater scientific) I saw something that was ‘right idea’ which got my attention. I liked the foot-long 4” diameter tube with optical dome and an equipment tray insert option. The circular end-plate of equipment tray were mounting points for Raspberry Pi or other camera. Base cap was pre-drilled for threaded mounting of sensors or pass-thru cords within glands. Obviously don’t need a submersible case with this kind of depth/psi rating but ergonomics/design were desirable to implement at more DIY level with ‘less exclusive’ grade of materials.