Patent Number: 7,102,532

Title: Subsea communication

Abstract: Methods of subsea communication in which a cathodic protection anode is used as a transmitting antenna. The signals are received at a second location by two electrodes which are spaced apart by different distances from the transmitting antenna.

Inventors: Hudson; Steven Martin (Sturminster Newton, GB)

Assignee: Expro North Sea Limited

International Classification: G01V 3/00 (20060101); G01S 13/00 (20060101); G05D 1/00 (20060101); H04B 11/00 (20060101); H04B 13/02 (20060101)

Expiration Date: 9/05/02018