Davis can be contracted to predict the underwater electric and electromagnetic signatures which result from the current flow from the cathodic protection anodes to the propeller shaft of a surface vessel or submarine.

Studies are useful for:

• Understanding the susceptibility of a vessel to influence mines.

• Understanding the spatial characteristics of the underwater signature for ship identification by underwater ranging equipment

• Evaluating various cathodic protection anode configurations for their impact on underwater signature

• Quantifying the benefit of Active Shaft Grounding (ASG)

The studies take into account the following geometric and environmental factors.

• Locations of active or passive protective anodes across the hull of the vessel.

• Degradation of anodic protection systems due to passive grounding deterioration and coating holidays.

• Varying salinity from seawater to brackish to freshwater environments.

• Varying seabed conductivity.

• Varying mine sensor locations and varying vessel depth from surface to periscope depth to fully submerged.