An unmanned autonomous submarine which can float, dive and move in water
to perform various tasks. The submarine includes a pressurized cabin
which is necessary for the diving and flotation system to work properly.
This also helps to increase its sealing power against water leakage into
the cabin. The submarine is autonomous, that is automatic and self
controlled. It is propelled by water jet propulsion. It can be programmed
to dive to preset depths, move along preset trajectories, and return to
the base after completing the assigned tasks. A remote control option is
provided in order to perform special tasks. The submarine is equipped
with several sensors that can measure depth, orientation, attitude,
location and speed. It is also equipped with an underwater video camera
that can send wireless video pictures from underwater to a monitor above
water surface.