The following links provide more detailed discussions on critical AUV Technologies
All AUV power systems must operate in an underwater environment. As such they must be air independent carrying, both the fuel and an oxygen supply.
Batteries
Primary Batteries (Non Rechargable)
Lithium Thinyl Chloride
Secondary Batteries (Rechargable)
Lead Acid
Silver Zinc
Nickle metal Hydride
Lithium Ion
Lithium Polymer
Fuel Cells
Hybrid Systems
Other systems
Thrusters
Biomemetric (mimicking Nature)
Gliders
Drifters
Other Technologies
Doppler Velocimeters
Internal Navigation Units
Ahead looking (Obstacle Avoidance)
Side looking
Synthetic Aperture Sonar
Acoustic
Radio