Compensation For Environmental Conditions; Figure 18: Head Tilt Functionality; Figure 19: Head Tilt For Harbor Inspection; Figure 20: Head Tilt For Pipe Inspection - Teledyne SeaBat T Series Operator's Manual

ACTIVE SONAR USAGE
Horizontal seafloor and
head set at 0° tilt
6.3.4.1 Harbor Inspection (Quaysides, Breakwaters)
In this application a single head is typically tilted up to 30° (max. setting is +/-45°) from normal to
register soundings as close to the waterline as possible.
6.3.4.2 Pipe Inspection with Dual Head Systems
In this application each head is typically tilted up to 15° (max. setting is +/-45°) from normal,
generally looking "in".
6.4

Compensation for Environmental Conditions

As sound propagates through the underwater environment, the energy is absorbed by the liquid
caused by molecular interactions that convert acoustic energy into heat. A propagating sound
field also spreads geometrically, which means that the sound pressure decreases with increasing
distance from the sonar. Other mechanisms such as bubbles, plankton, tidal currents, currents
SeaBat T-Series Subsea Operator's Manual
Version 7
Horizontal seafloor with head
physically set to -15° and head
tilt set to 0°

Figure 18: Head Tilt Functionality

Figure 19: Head Tilt for Harbor Inspection

Figure 20: Head Tilt for Pipe Inspection

Page 45
Horizontal seafloor with head
physically set to -15° and head
tilt set to -15°
January 31, 2019