How To...
Here are some suggestions to help you out with building your ROV
Make an inexpensive water tight camera
Make an inexpensive water tight ROV thruster
Make an inexpensive water tight light
Make an inexpensive ROV control system
Make an inexpensive water tight servo
Make an inexpensive water tight hydrophone
Make an inexpensive water tight tether and join wire
Make an inexpensive ballast chamber
Make an inexpensive water tight compartment
Make an expensive ROV control system
Make an expensive ballast system
Make an expensive water tight compartment
Make an expensive underwater cabling system
Make an expensive thruster
Make an expensive hydrophone
Make an expensive water tight light
Switch cameras on one video signal cable to have multiple cameras and one cable