Figure 6.2: Entering Visibility
PILOT™ is capable of ‘painting’ an ROV position trace, the width of which can correspond to the
visibility. In cases where the surface station is static, or PILOT™ is operated in geo-referenced
mode, this ‘painting of the sea floor’ is a powerful means to ensure complete survey coverage of a
site. The trace will even get darker (thicker paint), as the ROV runs repeatedly over one spot or
lingers! To take account of the
visibility
in the water at the time of the inspection, simply enter it into
the software. The visibility number determines the width of the trace. For example, if you specify one
meter visibility, then the trace will be 2 meters wide (one meter to the left, one meter to the right).
Good visibility (or an acoustic imaging system) will allow you to ‘paint’ a wider swath. Choose
Filter
Settings
from the
Item
menu and enter the approximate visibility in the appropriate box.
Activate and Deploy the Mobile Station
1.
Activate the mobile station. Make sure you get the ‘ready’ blink pattern (one second on
and three seconds off).
2.
Select
Start Real-Time Tracking
from the
Action
menu.
3.
Wait for the timer to start advancing in the upper right corner of the screen. This means
that DiveBase is recording position data. If communication to the mobile station is not
available, an error message will appear after about ten seconds. Check all connections
and power state and try again.
4.
Deploy the mobile station.
5.
Check that the mobile station appears as a green square on the screen in the correct
place, relative to the map of the ship.
Perform a Noise Test
