Subsea navigation and survey

Details Subsea navigation and survey Subsea navigation and survey

2005-03-08

2005-03-08

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Underwater system

Reexamination Certificate

active

06865139

ABSTRACT:
A subsea navigation system comprising a plurality of spaced antenna means provided on a subsea structure arranged to emit electromagnetic radiation. A detection means is provided on a subsea vehicle for receiving and analyzing the electromagnetic radiation transmitted by the antenna means allowing the subsea vehicle to navigate relative to the subsea structure. Each of the antenna means comprises a cathodic protection anode provided on the subsea structure.

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International Search Report, mailed Apr. 4, 2002.

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