- Main hull of the craft is a tank filled with gasoline: lighter than water and only a little compressible. It is not a high pressure enclosure. A membrane keeps these two fluids apart mostly, but some maneuvers dump gasoline into the ocean.
- Ballast is held in place with magnets. You actually want to drop ballast as you descend, to make up for the added seawater.
- Sphere on the bottom holds observer and instruments. This is a high pressure part.
- There’s no real propulsion or navigation. You land more or less where you land.
- Ballast is held in place with magnets. You actually want to drop ballast as you descend, to make up for the added seawater.
- Sphere on the bottom holds observer and instruments. This is a high pressure part.
- There’s no real propulsion or navigation. You land more or less where you land.